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Chevrolet T-Series, Owner'S Manual

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Chevrolet T-Series Owner'S Manual Download Page 253

Windshield Wiper Fuses

The windshield wiper motor is protected by a
circuit breaker inside the motor and a circuit
breaker or fuse in the fuse block. If the motor
overheats, the wipers will stop until the motor
cools. If the overload is caused by an electrical
problem, be sure to get it fixed.

Fusible Links

A fusible link is a short piece of wire that is
covered by an insulated cover. It is several gage
sizes smaller than the circuit it protects. It will
melt in an overload situation, opening the circuit.

Your starter and other circuits have these
fusible links. The size is printed on the insulation.
If the insulation is burned beyond recognition,
consult your GM dealer for the proper size.
Replace a fusible link with one of the same size
and insulation type. Fusible link insulation is
a special purpose high-temperature material.

Power Windows and Other
Power Options

Circuit breakers in the fuse panel protect the
power windows and other power accessories.
When the current load is too heavy, the circuit
breaker opens. This protects the circuit until
the current load returns to normal or the problem
is fixed.

Fuses and Circuit Breakers

The wiring circuits in your vehicle are protected
from short circuits by a combination of fuses,
circuit breakers, maxi-fuses and fusible links. This
greatly reduces the chance of a fire caused by
an electrical problem. There may be a fuse taped
to the wiring harness near the hydraulic brake
booster.

253

Summary of Contents for T-Series

Page 1: ...ndicators 101 Audio System s 119 Driving Your Vehicle 129 Your Driving the Road and Your Vehicle 130 Towing 164 Service and Appearance Care 171 Service 173 Fuel 176 Checking Things Under the Hood 187 Rear Axle 220 Cab Tilting 221 Noise Control System 228 Bulb Replacement 229 Windshield Wiper Blade Replacement 229 Other Service Items 231 Tires 233 Appearance Care 243 Vehicle Identification 252 Elec...

Page 2: ...Maintenance Schedule 265 Maintenance Schedule 266 Customer Assistance Information 301 Customer Assistance and Information 302 Reporting Safety Defects 311 Index 315 2 ...

Page 3: ...GM Medium Duty Truck Division when it appears in this manual This manual describes features that may be available in this model but your vehicle may not have all of them For example more than one entertainment system may be offered or your vehicle may have been ordered without a front passenger or rear seats Keep this manual in the vehicle so it will be there if it is needed while you are on the r...

Page 4: ...anual and the page number where it can be found Safety Warnings and Symbols There are a number of safety cautions in this book We use a box and the word CAUTION to tell about things that could hurt you if you were to ignore the warning CAUTION These mean there is something that could hurt you or other people In the caution area we tell you what the hazard is Then we tell you what to do to help avo...

Page 5: ...o warning labels on the vehicle They use the same words CAUTION or NOTICE Vehicle Symbols The vehicle has components and labels that use symbols instead of text Symbols are shown along with the text describing the operation or information relating to a specific component control message gage or indicator If you need help figuring out a specific name of a component gage or indicator reference the f...

Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...

Page 7: ... Adjustment 26 Safety Belt Use During Pregnancy 27 Right Passenger Position 28 Center Passenger Position 28 Safety Belt Extender 29 Child Restraints 30 Older Children 30 Infants and Young Children 33 Child Restraint Systems 37 Lower Anchors and Tethers for Children LATCH 41 Securing a Child Restraint in Your Medium Duty Vehicle 42 Restraint System Check 43 Checking the Restraint Systems 43 Replaci...

Page 8: ...ement could startle and confuse you or make you push a pedal when you do not want to Adjust the driver s seat only when the vehicle is not moving Slide lever A to the left to unlock the seat and slide the seat to where you want it Release the lever and try to move the seat with your body to make sure the seat is locked into place To adjust the lower seat cushion forward or backward pull up on leve...

Page 9: ... Lumbar To get more support in the lumbar area of your back turn the lumbar adjustment knob The knob is located on the inboard side of the driver s seatback and the outboard side of the passenger s seatback 9 ...

Page 10: ...er s seat while the vehicle is moving The sudden movement could startle and confuse you or make you push a pedal when you do not want to Adjust the driver s seat only when the vehicle is not moving To tilt the seatback turn the reclining knob The knob is located on the outboard side of both seats 10 ...

Page 11: ...d go into it receiving neck or other injuries The lap belt cannot do its job either In a crash the belt could go up over your abdomen The belt forces would be there not at your pelvic bones This could cause serious internal injuries For proper protection when the vehicle is in motion have the seatback upright Then sit well back in the seat and wear your safety belt properly Do not have a seatback ...

Page 12: ...valve is located on the outboard side of the driver s seat Pull the lever up to raise the seat Push the lever down to lower the seat Isolator Lock Lever The lever is located on the inboard side of the driver s seat Move the handle down to lock the seat in place This is used to reduce backslap experienced while in tractor trailer operation or while operating a dump truck Lever shown in the Locked P...

Page 13: ...ould cause injury to the person sitting there Always push and pull on the seatback to be sure it is locked Safety Belts Safety Belts They Are for Everyone This part of the manual tells you how to use safety belts properly It also tells you some things you should not do with safety belts CAUTION Do not let anyone ride where he or she cannot wear a safety belt properly If you are in a crash and you ...

Page 14: ...See Safety Belt Reminder Light on page 104 In most states and in all Canadian provinces the law says to wear safety belts Here is why They work You never know if you will be in a crash If you do have a crash you do not know if it will be a bad one A few crashes are mild and some crashes can be so serious that even buckled up a person would not survive But most crashes are in between In many of the...

Page 15: ...s And they are for adult truckers and anyone else who rides in your vehicle Here is why when your vehicle goes say 30 mph 50 km h so do you and your passengers If the vehicle hits something it stops right then But nothing stops the people They keep moving 15 ...

Page 16: ...hing will stop them It could be the windshield Or it could be the instrument panel Now what if you and your passengers were to give that big vehicle a chance to deal with the force of the impact instead of you 16 ...

Page 17: ... And your chance of being conscious during and after an accident so you can unbuckle and get out is much greater if you are belted Q If I am a good driver and I never drive far from home why should I wear safety belts A You may be an excellent driver but if you are in an accident even one that is not your fault you and your passengers can be hurt Being a good driver does not protect you from thing...

Page 18: ... the driver position Driver Position Lap Shoulder Belt The driver has a lap shoulder belt Here is how to wear it properly 1 Close and lock the door 2 Adjust the seat so you can sit up straight To see how see Seats in the Index 3 Pick up the latch plate and pull the belt across you Do not let it get twisted The lap shoulder belt may lock if you pull the belt across you very quickly If this happens ...

Page 19: ...le the safety belt quickly if you ever had to 5 Move the shoulder belt height adjuster to the height that is right for you Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash See Shoulder Belt Height Adjustment on page 26 6 To make the lap part tight pull up on the shoulder belt It may be necessary to pull stitching on the safety belt through the l...

Page 20: ...would be less likely to slide under the lap belt If you slid under it the belt would apply force at your abdomen This could cause serious or even fatal injuries The shoulder belt should go over the shoulder and across the chest These parts of the body are best able to take belt restraining forces The safety belt locks if there is a sudden stop or crash 20 ...

Page 21: ...too loose It will not give nearly as much protection this way CAUTION You can be seriously hurt if your shoulder belt is too loose In a crash you would move forward too much which could increase injury The shoulder belt should fit against your body 21 ...

Page 22: ...rotection this way CAUTION You can be seriously hurt if your lap belt is too loose In a crash you could slide under the lap belt and apply force at your abdomen This could cause serious or even fatal injuries The lap belt should be worn low and snug on the hips just touching the thighs 22 ...

Page 23: ...can be seriously injured if your belt is buckled in the wrong place like this In a crash the belt would go up over your abdomen The belt forces would be there not at the pelvic bones This could cause serious internal injuries Always buckle your belt into the buckle nearest you 23 ...

Page 24: ...seriously injured if you wear the shoulder belt under your arm In a crash your body would move too far forward which would increase the chance of head and neck injury Also the belt would apply too much force to the ribs which are not as strong as shoulder bones You could also severely injure internal organs like your liver or spleen 24 ...

Page 25: ...d across the body CAUTION You can be seriously injured by a twisted belt In a crash you would not have the full width of the belt to spread impact forces If a belt is twisted make it straight so it can work properly or ask your dealer to fix it 25 ...

Page 26: ...o that the shoulder portion of the belt is centered on your shoulder The belt should be away from your face and neck but not falling off your shoulder Improper shoulder belt height adjustment could reduce the effectiveness of the safety belt in a crash To move it down press in at the top of the arrows and move the height adjuster to the desired position You can move the height adjuster up just by ...

Page 27: ...nt woman should wear a lap shoulder belt and the lap portion should be worn as low as possible below the rounding throughout the pregnancy The best way to protect the fetus is to protect the mother When a safety belt is worn properly it is more likely that the fetus will not be hurt in a crash For pregnant women as for anyone the key to making safety belts effective is wearing them properly 27 ...

Page 28: ... See Driver Position on page 18 Center Passenger Position Lap Belt If your vehicle has a center seat someone can sit in the center position When you sit in a center seating position you have a lap safety belt which has no retractor To make the belt longer tilt the latch plate and pull it along the belt 28 ...

Page 29: ...r If the vehicle s safety belt will fasten around you you should use it But if a safety belt is not long enough your dealer will order you an extender When you go in to order it take the heaviest coat you will wear so the extender will be long enough for you To help avoid personal injury do not let someone else use it and use it only for the seat it is made to fit The extender has been designed fo...

Page 30: ...tional restraint a shoulder belt can provide The shoulder belt should not cross the face or neck The lap belt should fit snugly below the hips just touching the top of the thighs It should never be worn over the abdomen which could cause severe or even fatal internal injuries in a crash According to accident statistics children are safer when properly restrained in the rear seating positions than ...

Page 31: ...belt but the child is so small that the shoulder belt is very close to the child s face or neck A Move the child toward the center of the vehicle but be sure that the shoulder belt still is on the child s shoulder so that in a crash the child s upper body would have the restraint that belts provide If the child is so small that the shoulder belt is still very close to the child s face or neck you ...

Page 32: ... this way in a crash the child might slide under the belt The belt s force would then be applied right on the child s abdomen That could cause serious or fatal injuries Wherever the child sits the lap portion of the belt should be worn low and snug on the hips just touching the child s thighs This applies belt force to the child s pelvic bones in a crash 32 ...

Page 33: ...st be restrained while in a vehicle CAUTION Children can be seriously injured or strangled if a shoulder belt is wrapped around their neck and the safety belt continues to tighten Never leave children unattended in a vehicle and never allow children to play with the safety belts Every time infants and young children ride in vehicles they should have the protection provided by appropriate restraint...

Page 34: ...does not weigh much until a crash During a crash a baby will become so heavy it is not possible to hold it For example in a crash at only 25 mph 40 km h a 12 lb 5 5 kg baby will suddenly become a 240 lb 110 kg force on a person s arms A baby should be secured in an appropriate restraint 34 ...

Page 35: ...nt will have a label saying that it meets federal motor vehicle safety standards The restraint manufacturer s instructions that come with the restraint state the weight and height limitations for a particular child restraint In addition there are many kinds of restraints available for children with special needs CAUTION Newborn infants need complete support including support for the head and neck ...

Page 36: ... so small that the vehicle s regular safety belt may not remain low on the hip bones as it should Instead it may settle up around the child s abdomen In a crash the belt would apply force on a body area that is unprotected by any bony structure This alone could cause serious or fatal injuries Young children always should be secured in appropriate child restraints 36 ...

Page 37: ...n or position a child on a continuous flat surface Make sure that the infant s head rests toward the center of the vehicle A rear facing infant seat B provides restraint with the seating surface against the back of the infant The harness system holds the infant in place and in a crash acts to keep the infant positioned in the restraint 37 ...

Page 38: ...aces such as T shaped or shelf like shields A booster seat F G is a child restraint designed to improve the fit of the vehicle s safety belt system Some booster seats have a shoulder belt positioner and some high back booster seats have a five point harness A booster seat can also help a child to see out the window 38 ...

Page 39: ...meets federal motor vehicle safety standards Then follow the instructions for the restraint You may find these instructions on the restraint itself or in a booklet or both Securing an Add on Child Restraint in the Vehicle CAUTION A child can be seriously injured or killed in a crash if the child restraint is not properly secured in the vehicle Make sure the child restraint is properly installed in...

Page 40: ...straps that come down over each of the infant s shoulders and buckle together at the crotch The five point harness system has two shoulder straps two hip straps and a crotch strap A shield may take the place of hip straps A T shaped shield has shoulder straps that are attached to a flat pad which rests low against the child s body A shelf or armrest type shield has straps that are attached to a wi...

Page 41: ... be anchored A national or local law may require that the top tether be anchored In Canada the law requires that forward facing child restraints have a top tether and that the tether be attached Your vehicle does not have lower anchors or top tether anchors to secure a child restraint with the LATCH system If a national or local law requires that your top tether be anchored do not use a child rest...

Page 42: ...e You will be using the lap belt Be sure to follow the instructions that came with the child restraint Secure the child in the child restraint when and as the instructions say But do not use this position if the child restraint interferes with shifting gears There are no top tether anchors in this vehicle Do not secure a child seat in this vehicle if a national or local law requires that the top t...

Page 43: ... restraint just unbuckle the vehicle s safety belt It will be ready to work for an adult or larger child passenger Restraint System Check Checking the Restraint Systems Now and then make sure the safety belt reminder light and all your belts buckles latch plates retractors and anchorages are working properly Look for any other loose or damaged safety belt system parts If you see anything that migh...

Page 44: ...m inspected and any necessary replacements made as soon as possible If you have had a crash do you need new belts After a very minor collision nothing may be necessary But if the belts were stretched as they would be if worn during a more severe crash then you need new parts If belts are cut or damaged replace them Collision damage also may mean you will need to have safety belt or seat parts repa...

Page 45: ...xhaust Brake 60 Two Speed Rear Axle Electric Shift Control 62 Automatic Transmission Operation 63 Automatic Transmission Third Gear Hold 64 Manual Transmission Operation 64 Power Take Off PTO 66 Parking 67 Parking Brake With Hydraulic Brakes 67 Parking Brake With Air Brakes 69 Parking Brake Burnish Procedure 71 Air Suspension 72 Parking Over Things That Burn 73 Engine Exhaust 74 Running the Engine...

Page 46: ... leave the keys in a vehicle with children One key operates all locks including the ignition switch The key has a code on it that tells your dealer or a qualified locksmith how to make extra keys Record and keep the key code in a safe place If you lose your key you ll be able to have a new one made easily using this code Notice If you ever lock your keys in your vehicle you may have to damage the ...

Page 47: ...are not locked So wear safety belts properly and lock the doors whenever you drive CAUTION Continued CAUTION Continued Young children who get into unlocked vehicles may be unable to get out A child can be overcome by extreme heat and can suffer permanent injuries or even death from heat stroke Always lock your vehicle whenever you leave it Outsiders can easily enter through an unlocked door when y...

Page 48: ...ned using the inside handles until the manual lock is pulled out Windows CAUTION Leaving children helpless adults or pets in a vehicle with the windows closed is dangerous They can be overcome by the extreme heat and suffer permanent injuries or even death from heat stroke Never leave a child a helpless adult or a pet alone in a vehicle especially with the windows closed in warm or hot weather 48 ...

Page 49: ...Press the rearward part of the switch to lower the window Press the forward part of the switch to raise the window The power windows will operate when the ignition is in ACC or ON Express Down The driver s window has an express down feature This allows the window to be lowered fully without continuously holding the switch Press the switch down fully to initiate the express down feature Press the t...

Page 50: ...eaned CAUTION Never open the passenger side door glass with the ignition on You can be injured if the window linkage moves Open this glass only with the ignition off To open the window cover pull on the latch at the rear of the window and swing the window cover open When closing the window cover push firmly at the latch to close completely 50 ...

Page 51: ...rst 500 miles 805 km Do not make full throttle starts Avoid making hard stops for the first 200 miles 322 km or so During this time your new brake linings are not yet broken in Hard stops with new linings can mean premature wear and earlier replacement Follow this breaking in guideline every time you get new brake linings Use the lowest gear you can when you start a loaded vehicle in motion and wh...

Page 52: ...s or thieves If you leave the key in the ignition and park your vehicle a chime will sound when you open the driver s door Always remember to remove your key from the ignition and take it with you This will lock your ignition and transaxle Also always remember to lock the doors The battery could be drained if you leave the key in the ignition while your vehicle is parked You may not be able to sta...

Page 53: ... cause your battery to be drained much sooner And the excessive heat can damage your starter motor Notice If the wait to start indicator stays on after starting your vehicle your vehicle may not run properly Have your vehicle serviced right away 3 If the engine does not start after 15 seconds of cranking turn the ignition key to LOCK Wait one minute for the starter to cool then try the same steps ...

Page 54: ... ignition key to START If the light does not go off wait a few seconds then try starting your engine again And see your dealer as soon as you can for a starting system check If the light comes on and then goes off and you know your batteries are charged but your engine still will not start your vehicle needs service If the light does not come on when the engine is cold your vehicle needs service I...

Page 55: ...tion is fixed If the engine temperature or oil pressure condition worsens the tone alarm will increase in frequency If the system senses low engine oil coolant the alarm and the low coolant warning light will come on See Low Coolant Warning Light on page 110 for more information The alarm means that your engine will shut down See Engine Shutdown Warning Light on page 114 for more information Pull ...

Page 56: ... engine idle speed whenever the following conditions are met The brake pedal is not pressed The vehicle is at a complete stop The manual transmission clutch pedal is not pressed or the automatic transmission is in NEUTRAL N or PARK P The manual high idle feature is activated by pressing the button on the instrument panel When the button is pressed again or any of the previous conditions are not me...

Page 57: ...he exhaust brake switch must be on See Diesel Engine Exhaust Brake on page 60 for more information The indicator in the exhaust brake switch will be lit when the exhaust restrictor is active The exhaust brake indicator light in the center of the instrument panel will also be lit whenever the exhaust restrictor is active See Exhaust Brake Indicator Light on page 114 for more information When the en...

Page 58: ... and gages If oil pressure does not begin to rise within 15 seconds of starting stop the engine and find the cause See Oil Pressure Gage on page 112 for more information If the engine coolant temperature gage needle goes into the hot area on the gage stop the engine and find the cause of the overheating See Engine Coolant Temperature Gage on page 110 for more information If you have air brakes the...

Page 59: ...ormation Notice Do not allow the engine to operate at low idle for more than five minutes This can cause low engine operating temperatures which can affect engine operation and reduce engine life Engine idle speed should be increased to 1200 rpm whenever extended idle is required Once started the engine should be placed under load to allow the engine coolant temperature to reach 150 F 66 C before ...

Page 60: ... the engine be sure to unplug and store the cord as it was before to keep it away from moving engine parts If you do not it could be damaged How long should you keep the coolant heater plugged in The answer depends on the outside temperature the kind of oil you have and some other things Instead of trying to list everything here we ask that you contact your dealer in the area where you will be par...

Page 61: ...hen using the exhaust brake the proper gear range selection is important The exhaust brake will be most effective if the gear range selected is the lowest possible range that does not allow the engine rpm to exceed 2500 rpm If you have an automatic transmission and press this button the transmission will downshift to a factory default setting of fourth gear To change the default setting or for mor...

Page 62: ... or under a heavy load shift into low range when the vehicle is standing still and then operate the transmission normally On the highway with the rear axle in low range and the transmission in top gear you may shift the rear axle to high range by raising the switch and releasing the accelerator momentarily Reapply the accelerator after you shift Under light load conditions first shift the rear axl...

Page 63: ...t the parking brake firmly set Your vehicle can roll If you have left the engine running the vehicle can move suddenly You or others could be injured To be sure your vehicle will not move even when you are on fairly level ground always set the parking brake CAUTION Shifting into a drive gear while your engine is running at high speed is dangerous Unless your foot is firmly on the brake pedal your ...

Page 64: ...his Manual Transmission Operation Using the Clutch When you are starting to move the vehicle it is important to begin with the engine speed at idle Then start to engage the clutch and listen for an engine speed drop of about 100 rpm At this point the clutch is engaging so you should increase the engine speed and fully engage the clutch Notice If you increase the engine speed before the clutch is f...

Page 65: ... or anytime the transmission is in the HI range Never move the range knob or lever with the shift lever in NEUTRAL while the vehicle is moving Never make a range shift while moving in REVERSE R Double Clutching You must use the double clutching method when you shift an unsynchronized gear set Disengage the clutch shift to neutral and engage the clutch When upshifting slow the engine until the engi...

Page 66: ...o the shift lever This will provide for a smooth shift into either FIRST 1 or REVERSE R gear Notice Using the clutch brake for shifting into any gear other than FIRST 1 or REVERSE R may cause premature wear of the clutch brake and make gear shift effort more difficult Do not use the clutch brake for shifting after engaging FIRST 1 or REVERSE R Power Take Off PTO Your vehicle may be equipped with p...

Page 67: ...Brakes If your vehicle has hydraulic brakes it has a parking brake lever The lever is located in the center console Your vehicle may also be equipped with an automatic transmission which has a center console shift lever This lever will have a PARK P position on the shift indicator Even when PARK P is selected be sure to apply the parking brake firmly so the vehicle will not move To apply the parki...

Page 68: ...he release button push the parking brake lever all the way down and shift the transmission to NEUTRAL The parking brake light will stay on if the parking brake is not fully released Notice Driving with the parking brake on can overheat the brake system and cause premature wear or damage to brake system parts Verify that the parking brake is fully released and the brake warning light is off before ...

Page 69: ...ll come on when the air parking brake is applied Vehicles built for use as tractors or towing vehicles have two air brake controls They look like this CAUTION When the yellow PARKING BRAKE and the red TRAILER AIR SUPPLY knobs are both pushed in your rig will be free to move It could strike someone or something When both of these knobs are pushed in hold the regular brake pedal down to keep your ri...

Page 70: ... trailer system should be fully charged When it is the air pressure gage will show about 125 to 135 psi 862 to 931 kPa See Air Pressure Gage on page 118 for more information For driving with a trailer the yellow and red if equipped knobs must be pushed in When you are not pulling a trailer the red trailer air supply knob must be pulled out CAUTION If you apply any one of the air brake parking cont...

Page 71: ... on page 164 Parking Brake Burnish Procedure All vehicles which have hydraulic brakes will have a parking brake It is recommended that the parking brake be burnished as part of the new vehicle break in The parking brake will work best after it has been burnished following these instructions 1 Making sure that there is no other traffic around get the vehicle speed up to 20 mph 32 km h and pull up t...

Page 72: ...ries single axle air suspension you may have this control The air suspension dump control allows the operator to lower the deck height approximately 4 5 inches 11 5 cm from the normal frame height The switch to deflate and inflate the air suspension is located in the instrument panel Press the bottom of the switch to deflate the air suspension and lower the deck height Press the top of the switch ...

Page 73: ...Parking Over Things That Burn CAUTION Things that can burn could touch hot exhaust parts under your vehicle and ignite Do not park over papers leaves dry grass or other things that can burn 73 ...

Page 74: ...r vehicle gets rusty underneath Your vehicle was damaged in a collision CAUTION Continued CAUTION Continued Your vehicle was damaged when driving over high points on the road or over road debris Repairs were not done correctly Your vehicle or exhaust system has been modified improperly If you ever suspect exhaust is coming into your vehicle Drive it only with all the windows down to blow out any C...

Page 75: ... a garage with the engine running Another closed in place can be a blizzard See Winter Driving on page 156 CAUTION It can be dangerous to get out of your vehicle if the automatic transmission shift lever is not fully in PARK P with the parking brake firmly set Your vehicle can roll Do not leave your vehicle when the engine is running unless you have to If you have left the engine running the vehic...

Page 76: ...g lamps are on Outside Convex Mirrors CAUTION A convex mirror can make things like other vehicles look farther away than they really are If you cut too sharply into the right or left lane you could hit a vehicle Check your regular outside mirrors or your inside mirror if you have one before changing lanes Your vehicle may have convex mirrors on both the driver s side and the passenger s side They ...

Page 77: ...r light will come on and stay on whenever the outside heated rearview mirrors are activated Storage Areas Overhead Storage An overhead storage compartment is provided above each of the driver s and passenger s seats To open push down on the inner button and lift the compartment doors all the way up to lock in position Be sure the doors are securely closed before moving the vehicle 77 ...

Page 78: ...Storage A storage compartment is located behind the seatback in the center seat To access the compartment you must first pull down on the handle located on the passenger side to fold the seat all the way forward 78 ...

Page 79: ...To open squeeze both sides of the latch Center Console Storage Area There are additional storage areas for small items in the center console to the right of the driver s seat 79 ...

Page 80: ... NOTES 80 ...

Page 81: ...Power Jacks 97 Ashtray s and Cigarette Lighter 97 Climate Controls 98 Climate Control System 98 Outlet Adjustment 100 Passenger Compartment Air Filter 100 Warning Lights Gages and Indicators 101 Instrument Panel Cluster 102 Speedometer and Odometer 103 Trip Odometer 103 Tachometer 103 Engine Speed Limiter 103 Safety Belt Reminder Light 104 Safety Belt Reminder Tone 104 Charging System Light 105 Vo...

Page 82: ...ust Brake Indicator Light 114 Differential Lock Indicator Light 115 Reduced Engine Power Light 115 Highbeam On Light 115 Daytime Running Lamps DRL Indicator Light 116 Check Gages Warning Light 116 Fuel Gage 117 Water in Fuel Warning Light 117 Air Pressure Gage 118 Hourmeter Gage 118 Audio System s 119 Setting the Time 120 AM FM Radio 121 Radio with Cassette 124 Radio Reception 126 Care of the Cass...

Page 83: ... NOTES 83 ...

Page 84: ...Instrument Panel Overview 84 ...

Page 85: ...See Manual High Idle System under Starting the Diesel Engine on page 52 J Heated Mirror Switch See Outside Heated Mirrors on page 77 K Front Panel Release See Lifting the Front Panel on page 227 L Tilt Steering Column See Tilt Wheel on page 86 M Horn See Horn on page 86 N Air Brake Controls If Equipped See Parking Brake With Hydraulic Brakes on page 67 or Parking Brake With Air Brakes on page 69 O...

Page 86: ...with or without the key in the ignition When the hazard warning flashers are on the turn signals will not work The hazard warning flashers will not flash if the brakes are applied Other Warning Devices If you carry reflective triangles you can set them up at the side of the road about 300 feet 100 m behind your vehicle Horn Sound the horn by firmly pressing the pad in the center of the steering wh...

Page 87: ...e way down Turn Signal Multifunction Lever The multifunction lever located on the left side of the steering column includes the following G Turn and Lane Change Signals See Turn and Lane Change Signals on page 88 Headlamp High Beam Low Beam Changer See Headlamp High Low Beam Changer on page 88 Flash to pass See Flash to Pass on page 89 3 Headlamps See Headlamps on page 94 J Cruise Control if equip...

Page 88: ...e If you signal a turn or a lane change and the arrows on the instrument panel turn on but do not flash check the turn signal flasher and circuit breaker If a bulb is burned out replace it to help avoid an accident If the arrows don t go on at all when you signal a turn check for burned out bulbs and a blown fuse See Fuses and Circuit Breakers on page 253 Headlamp High Low Beam Changer 3 Headlamp ...

Page 89: ... you The high beam indicator on the instrument panel cluster will come on Release the lever to return to normal operation Windshield Wipers The windshield wipers are controlled by the lever located on the right side of the steering column The windshield wipers have these positions 9 OFF Turn the knob at the end of the windshield wiper lever to turn off the wipers Intermittent Turn the knob to the ...

Page 90: ...load your wipers The windshield wiper motor is protected from overload by a circuit breaker and a fuse If the motor overheats due to heavy snow or ice the wiper will stop until the motor cools Although the circuit is protected from electrical overload overload due to heavy snow or ice may cause wiper linkage damage Always clear ice and heavy snow from the windshield before using your windshield wi...

Page 91: ...tic transmission and the brakes are applied the cruise control will shut off If the vehicle has a manual transmission and the brakes are applied or the clutch pedal is pushed the cruise control will shut off CAUTION Cruise control can be dangerous where you cannot drive safely at a steady speed So do not use your cruise control on winding roads or in heavy traffic Cruise control can be dangerous o...

Page 92: ...you want to use cruise control 1 Press the J button to turn the cruise control on The light inside the switch will turn on 2 Get up to the speed you want 3 Press in the J SET button at the end of the lever and release it 4 Take your foot off the accelerator pedal Resuming a Set Speed Suppose you set the cruise control at a desired speed and then you apply the brake or the clutch This of course shu...

Page 93: ...trol Press the J SET button until you reach the lower speed desired then release it To slow down in very small amounts tap the button briefly Each time this is done the vehicle will go about 1 mph 1 6 km h slower Passing Another Vehicle While Using Cruise Control Use the accelerator pedal to increase your speed When you take your foot off the pedal the vehicle will slow down to the cruise control ...

Page 94: ...hts 2 Headlamps Turn the band to this position to turn on all the headlamps together with the previously listed lamps and lights A circuit breaker protects the headlamps If you have an electrical overload the headlamps will flicker on and off Have the headlamp wiring checked right away if this ever happens Headlamps on Reminder If your vehicle has this feature an alarm will sound when the headlamp...

Page 95: ... turn the headlamp band to OFF the regular lamps will go off and your low beam headlamps will change to the reduced brightness of DRL To idle your vehicle with the DRL off set the parking brake The DRL will stay off until you release the parking brake As with any vehicle you should turn on the regular headlamp system when you need it Marker Lamps If your vehicle is designed for trailer towing this...

Page 96: ...en when the door is opened The dome lamp will remain on whether or not the door is open if the switch is placed in the ON position Rear Reading Lamps Your vehicle may have a rear lamp button which is located on the lower left side of the instrument panel See Instrument Panel Overview on page 84 When pressed in an indicator light inside the button will illuminate Because your truck may be finished ...

Page 97: ...ea Ashtray s and Cigarette Lighter Your vehicle may have an ashtray and a cigarette lighter located in the center floor console To open the removable ashtray flip open the top Notice If you put papers pins or other flammable items in the ashtray hot cigarettes or other smoking materials could ignite them and possibly damage your vehicle Never put flammable items in the ashtray To use the cigarette...

Page 98: ...Some air may be directed toward the windshield 6 Floor This mode directs most of the air to the floor outlets with some air directed to the outboard outlets for the side windows and some air directed to the windshield 9 Fan The fan has five speed settings OFF 1 2 3 and 4 Slide the fan lever to OFF to turn the system off Outside air will still come out of the floor outlets whenever the vehicle is m...

Page 99: ...mount of water dripping underneath your vehicle while idling or after turning off the engine This is normal Defogging and Defrosting There are two modes to clear fog or frost from your windshield Press the defog button to clear the windows of fog or moisture and warm the passengers Press the defrost button to remove fog or frost from the windshield more quickly Defog Press this button to direct th...

Page 100: ...t Air Filter The passenger compartment outside air is routed through a passenger compartment filter The filter removes certain debris including dirt and leaves Reductions in your climate control system performance may indicate that the filter needs to be inspected and cleaned The passenger compartment air filter can be accessed from the outside of the vehicle on the front passenger side It is conc...

Page 101: ...n when there may be or is a problem with one of your vehicle s functions As you will see in the details on the next few pages some warning lights come on briefly when you start the engine just to let you know they are working If you are familiar with this section you should not be alarmed when this happens Gages can indicate when there may be or is a problem with one of your vehicle s functions Of...

Page 102: ... instrument panel cluster is designed to let you know at a glance how your vehicle is running You will know how fast you are going about how much fuel is left and many other things you will need to drive safely and economically 102 ...

Page 103: ...he reset button located to the right of the trip odometer to toggle between the trip odometer and the regular odometer Holding the reset button for two seconds while the engine is running and the trip odometer is displayed will reset it To display the odometer reading with the ignition off press the reset button The hourmeter gage is accessed through the trip odometer for more information see Hour...

Page 104: ...label on the headliner of your vehicle with more information on your engine road speed governor See your dealer for assistance with programming your engine limited speed Safety Belt Reminder Light When the key is turned to ON or START a light will come on for several seconds to remind people to fasten their safety belts The safety belt light will also come on and stay on for several seconds Safety...

Page 105: ...sult in a lack of back up braking if the engine quits or the power steering pump should fail Voltmeter Gage When your engine is running the voltmeter gage shows the charging system voltage Readings in either warning zone indicate a possible problem in the electrical system Readings in the low warning zone may occur when a large number of electrical accessories are operating in the vehicle and the ...

Page 106: ...le this light is on the transmission cannot operate in all gears If you attempt to shift gears the vehicle may not continue to move Do not attempt to shift gears while the transmission warning light is on Instead drive directly to an authorized dealer for service If you cannot drive to a dealer immediately have the vehicle towed Range Inhibit Warning Indicator If your vehicle has an Allison 1000 2...

Page 107: ...rning light comes on it means there may be something wrong in the brake system When this light comes on you will also hear a warning tone Have the system repaired immediately Both of these lights should come on briefly every time you start your engine If they don t come on then have them fixed so they will be ready to warn you if there s a problem If one or both of these warning lights stay on aft...

Page 108: ...the warning light comes on while you are driving you should drive only as far as the nearest point of safety and then stop the vehicle Here s a very important thing for you to know CAUTION If the air brake system warning light comes on and the warning tone sounds the vehicle can stop suddenly and without further warning This is because the parking brake will come on if the pressure falls below 35 ...

Page 109: ...e 107 and Anti Lock Brake System ABS on page 136 for more information The anti lock brake system warning light should come on briefly when you turn the ignition key to ON If the light does not come on then have it fixed so it will be ready to warn you if there is a problem Trailer Anti Lock Brake System Warning Light If your vehicle is connected to a trailer with anti lock brakes this light should...

Page 110: ...or more information Low Coolant Warning Light You have a low coolant warning light If this light comes on your system is low on coolant and the engine may overheat The warning light should come on briefly as a check when you turn on the ignition When it comes on you will also hear a warning tone for 10 seconds See Engine Coolant on page 196 and have your vehicle serviced as soon as you can This li...

Page 111: ...s may happen First you will not notice any difference in engine performance but your tail pipe emissions may increase Second your engine may not run properly or may stall without warning If either of these things happen drive or tow your vehicle to your dealer for service This light should come on when the ignition is on but the engine is not running as a check to show you it is working If it does...

Page 112: ...ing in the low pressure zone may be caused by a dangerously low oil level or other problem See Engine Oil on page 187 and Scheduled Maintenance on page 269 for more information CAUTION Do not keep driving if the oil pressure is low If you do your engine can become so hot that it catches fire You or others could be burned Check your oil as soon as possible and have your vehicle serviced Notice Lack...

Page 113: ... damage the engine The repairs would not be covered by your warranty Always follow the maintenance schedule in this manual for changing engine oil Change Engine Oil Light Your vehicle may have a change engine oil light It should come on briefly as a bulb check when you start the engine If the light does not come on have it serviced If the change engine oil light comes on and stays on after you sta...

Page 114: ...tdown Warning Light If your vehicle has the engine shutdown feature this light will come on when engine shutdown is active Exhaust Brake Indicator Light If your vehicle is equipped with an exhaust brake you will have this light located above the climate controls in the center of the instrument panel The exhaust brake indicator light will come on and stay on whenever the diesel engine exhaust brake...

Page 115: ...e on the throttle may be disabled and a noticeable change in the vehicle s performance may occur If the reduced engine power light is on but there is no change in performance proceed to your destination The performance may be reduced the next time the vehicle is driven The vehicle may be driven at a slower speed while the reduced engine power light is on but acceleration and speed may be limited A...

Page 116: ...inder to turn on your headlamps Check Gages Warning Light This light will come on as you re starting the engine just as a check If it ever comes on and stays on while you are driving however it means that either your engine coolant temperature gage or your engine oil pressure gage may be showing a reading in the warning zone When the check gages light comes on you will also hear a warning tone The...

Page 117: ...e are four concerns of some operators None of these shows a problem with your fuel gage The gage moves a little when you turn a corner or speed up The gage doesn t go back to empty when you turn off the ignition At the gas station the pump shuts off before the gage reads full It takes a little more or less fuel to fill up than the gage indicated Water in Fuel Warning Light If your vehicle is equip...

Page 118: ...u need to apply your brakes Hourmeter Gage To access the engine hourmeter gage press the trip odometer button three times The instrument panel cluster displays the accumulated engine run time hours using the reconfigurable odometer display The engine run time hours displays only when the ignition is in the LOCK or ACC Accessory position and the trip reset switch is pressed for about four seconds W...

Page 119: ...favorite radio stations setting the tone and adjusting the speakers Then when driving conditions permit you can tune to your favorite stations using the presets and steering wheel controls if the vehicle has them CAUTION This system provides you with a far greater access to audio stations and song listings Giving extended attention to entertainment tasks while driving can cause a crash and you or ...

Page 120: ...ant to do it properly Added sound equipment may interfere with the operation of your vehicle s engine radio or other systems and even damage them Your vehicle s systems may interfere with the operation of sound equipment that has been added Setting the Time AM FM Radio Press and hold the DISP button Press the up tuning button until the correct hour appears on the display Press the down tuning arro...

Page 121: ...the selection z y Tune Press the up arrow to go to the next radio frequency Press the down arrow to go to the previous radio frequency To seek stations press and hold either arrow for a second or longer The radio seeks to the next or previous station The radio only seeks stations with a strong signal that are in the selected band t Scan Press this button to scan radio stations The radio goes to a ...

Page 122: ... Steps 2 4 for each pushbutton To automatically store the preset pushbuttons perform the following steps 1 Turn the radio on 2 Press BND to select FM or AM 3 Press and hold the AS button for more than two seconds The radio stores the first six strongest stations found onto the radio preset pushbuttons Whenever that numbered pushbutton is pressed the station that was set returns Setting the Tone Ba...

Page 123: ... setting the alarm the display changes back to the current time 5 Press the alarm button again The alarm symbol appears on the display The alarm sounds at the same time every day 6 To turn the alarm off press the alarm button 7 To deactivate the alarm press the alarm button To check the time of the alarm press the DISP button Using the Wake Up Timer The wake up timer can be used to turn the radio ...

Page 124: ...d band Finding a Station AM FM Press this button to switch between AM or FM The display shows the selection SCN Scan Press and release this button to scan radio stations The radio goes to a station plays for a few seconds then goes to the next station Press this button again to stop scanning The radio only scans stations with a strong signal that are in the selected band Setting Preset Stations Up...

Page 125: ...he knob back in when not in use Using the Alarm U Alarm The alarm on the radio can be used to activate an alarm at a desired time To set the alarm perform the following 1 Press the alarm button until the alarm symbol appears on the display 2 Press the alarm button again until the display flashes 3 Press the up tuning arrow to change the hour 4 Press the down tuning arrow to change the minutes Afte...

Page 126: ...everse Press either arrow to either fast forward or reverse the tape depending on the direction of the tape as indicated on the display To stop fast forwarding or reversing press the other arrow PROG Program Press both arrows at the same time to play the other side of the tape An arrow appears on the display to show the tape playing direction AM FM Press this button to switch between playing the r...

Page 127: ...and out Care of the Cassette Tape Player A tape player that is not cleaned regularly can cause reduced sound quality ruined cassettes or a damaged mechanism Cassette tapes should be stored in their cases away from contaminants direct sunlight and extreme heat If they are not they may not operate properly or may cause failure of the tape player The tape player should be cleaned regularly after ever...

Page 128: ...eaner The use of a non scrubbing action dry type cleaning cassette is not recommended Cassettes are subject to wear and the sound quality may degrade over time Always make sure the cassette tape is in good condition before the tape player is serviced Fixed Mast Antenna The antenna is located in front of the driver s side door at the top of the cab Push the antenna back in to retract it The antenna...

Page 129: ...Control System TCS 139 Steering 141 Off Road Recovery 143 Passing 144 Loss of Control 145 Driving at Night 147 Driving in Rain and on Wet Roads 148 City Driving 151 Freeway Driving 152 Highway Hypnosis 153 Hill and Mountain Roads 154 Winter Driving 156 If Your Vehicle is Stuck in Sand Mud Ice or Snow 160 Rocking Your Vehicle to Get It Out 161 Tow Hooks 161 Loading Your Vehicle 162 Towing 164 Towin...

Page 130: ... pedestrians or other drivers are going to be careless and make mistakes Anticipate what they might do and be ready Rear end collisions are about the most preventable of accidents Yet they are common Allow enough following distance Defensive driving requires that a driver concentrate on the driving task Anything that distracts from the driving task makes proper defensive driving more difficult and...

Page 131: ...ates nearly half the adult population choose never to drink alcohol so they never drive after drinking For persons under 21 it is against the law in every U S state to drink alcohol There are good medical psychological and developmental reasons for these laws The obvious way to eliminate the leading highway safety problem is for people never to drink alcohol and then drive But what if people do Ho...

Page 132: ... drinking will have a somewhat lower BAC level There is a gender difference too Women generally have a lower relative percentage of body water than men Since alcohol is carried in body water this means that a woman generally will reach a higher BAC level than a man of her same body weight will when each has the same number of drinks The law in most U S states and throughout Canada sets the legal l...

Page 133: ...t answer What if there is an emergency a need to take sudden action as when a child darts into the street A person with even a moderate BAC might not be able to react quickly enough to avoid the collision There is something else about drinking and driving that many people do not know Medical research shows that alcohol in a person s system can make crash injuries worse especially injuries to the b...

Page 134: ...ot and do it That is reaction time Average reaction time is about three fourths of a second But that is only an average It might be less with one driver and as long as two or three seconds or more with another Age physical condition alertness coordination and eyesight all play a part So do alcohol drugs and frustration But even in three fourths of a second a vehicle moving at 60 mph 100 km h trave...

Page 135: ... assist is used up it may take longer to stop and the brake pedal will be harder to push Hydraulic Brake Systems If your engine stops running or if your primary brake system stops working your vehicle has a reserve power assist system to help you slow down Just slowly and steadily apply the brake pedal until you can safely get off the road The pedal will seem harder to push down Do not pump the pe...

Page 136: ...this test is going on This is normal If there is a problem with ABS this warning light will stay on See Anti Lock Brake System Warning Light on page 109 Let us say the road is wet and you are driving safely Suddenly an animal jumps out in front of you You slam on the brakes and continue braking Here is what happens with ABS A computer senses that wheels are slowing down If one of the wheels is abo...

Page 137: ... or always decrease stopping distance If you get too close to the vehicle in front of you you will not have time to apply your brakes if that vehicle suddenly slows or stops Always leave enough room up ahead to stop even though you have ABS Using ABS Do not pump the brakes Just hold the brake pedal down firmly and let anti lock work for you You may feel the brakes pulsate or you may hear air exhau...

Page 138: ...you have to Use this control only when you are driving Do not use it for parking or to hold the rig on a hill CAUTION Using the trailer brake hand control for parking or for holding the vehicle on a hill may not keep the vehicle from rolling This can happen if someone hits the valve by accident or if air pressure bleeds from the system If the vehicle rolls you or others could be injured To park th...

Page 139: ...s are not spinning freely Traction Control System TCS Your vehicle may have a traction control system that limits wheel spin This is especially useful in slippery road conditions The system operates only if it senses that one or both of the rear wheels are spinning or beginning to lose traction When this happens the system applies the brake s at the affected wheel s The bottom light on the TCS on ...

Page 140: ...mit wheel spin especially in slippery road conditions you should always leave the system on But you can turn the traction control system off if you ever need to You should turn the system off if your vehicle ever gets stuck in sand mud or snow and rocking the vehicle is required See Rocking Your Vehicle to Get It Out on page 161 for more information To turn the system on or off press the traction ...

Page 141: ...icle to change its path when you turn the front wheels If there is no traction inertia will keep the vehicle going in the same direction If you have ever tried to steer a vehicle on wet ice you will understand this The traction you can get in a curve depends on the condition of your tires and the road surface the angle at which the curve is banked and your speed While you are in a curve speed is t...

Page 142: ...away Steering in Emergencies There are times when steering can be more effective than braking For example you come over a hill and find a truck stopped in your lane or a car suddenly pulls out from nowhere or a child darts out from between parked cars and stops right in front of you You can avoid these problems by braking if you can stop in time But sometimes you cannot there is not room That is t...

Page 143: ...od reason to practice defensive driving at all times and wear safety belts properly Off Road Recovery You may find that your right wheels have dropped off the edge of a road onto the shoulder while you are driving If the level of the shoulder is only slightly below the pavement recovery should be fairly easy Ease off the accelerator and then if there is nothing in the way steer so that your vehicl...

Page 144: ...ahead than you would with a passenger car Drive ahead Look down the road to the sides and to crossroads for situations that might affect your passing patterns If you have any doubt whatsoever about making a successful pass wait for a better time Watch for traffic signs pavement markings and lines If you can see a sign up ahead that might indicate a turn or an intersection delay your pass A broken ...

Page 145: ...e to see its front in your vehicle s passenger side outside mirror activate the right lane change signal and move back into the right lane Remember that if your vehicle s right outside mirror is convex the vehicle you just passed may seem to be further away from you than it really is Try not to pass more than one vehicle at a time on two lane roads Reconsider before passing the next vehicle Do not...

Page 146: ... reduced when water snow ice gravel or other material is on the road For safety you will want to slow down and adjust your driving to these conditions It is important to slow down on slippery surfaces because stopping distance will be longer and vehicle control more limited While driving on a surface with reduced traction try your best to avoid sudden steering acceleration or braking including red...

Page 147: ...at night as in the daytime But as we get older these differences increase A 50 year old driver may require at least twice as much light to see the same thing at night as a 20 year old What you do in the daytime can also affect your night vision For example if you spend the day in bright sunshine you are wise to wear sunglasses Your eyes will have less trouble adjusting to night But if you are driv...

Page 148: ...jects Just as the headlamps should be checked regularly for proper aim so should your eyes be examined regularly Some drivers suffer from night blindness the inability to see in dim light and are not even aware of it Driving in Rain and on Wet Roads Rain and wet roads can mean driving trouble On a wet road you cannot stop accelerate or turn as well because your tire to road traction is not as good...

Page 149: ...rakes work normally Driving too fast through large water puddles or even going through some vehicle washes can cause problems too The water may affect your brakes Try to avoid puddles But if you cannot try to slow down before you hit them Hydroplaning Hydroplaning is dangerous So much water can build up under your tires that they can actually ride on the water This can happen if the road is wet en...

Page 150: ...ay CAUTION Continued CAUTION Continued As little as six inches of flowing water can carry away a smaller vehicle If this happens you and other vehicle occupants could drown Do not ignore police warning signs and otherwise be very cautious about trying to drive through flowing water Some Other Rainy Weather Tips Turn on your low beam headlamps and your marker and clearance lamps if your vehicle has...

Page 151: ...y trip Larger vehicles cannot be driven everywhere smaller ones can There are low underpasses truck routes and other special situations Usually these are well marked so be sure to watch for the signs Try to use the freeways that rim and crisscross most large cities You will save time and energy See Freeway Driving on page 152 Treat a green light as a warning signal A traffic light is there because...

Page 152: ...y as you drive along the entrance ramp you should begin to check traffic Try to determine where you expect to blend with the flow Try to merge into the gap at close to the prevailing speed Switch on your turn signal check your mirrors and try to blend smoothly with the traffic flow Once you are on the freeway adjust your speed to the posted limit or to the prevailing rate if it is slower Stay in t...

Page 153: ...areness or whatever When you drive the vehicle for a long distance there is something about an easy stretch of road with the same scenery along with the hum of the tires on the road the drone of the engine and the rush of the wind against the vehicle that can make you sleepy Do not let it happen to you If it does your vehicle can leave the road in less than a second and you could crash and be inju...

Page 154: ...ehicle in good shape Check all fluid levels and also the brakes tires cooling system and transmission These parts can work hard on mountain roads CAUTION If you do not shift down your brakes could get so hot that they would not work well You would then have poor braking or even none going down a hill You could crash Shift down to let your engine assist your brakes on a steep downhill slope 154 ...

Page 155: ...when you go down a steep or long hill Know how to go uphill Use lower gears They help cool your engine and transmission and you can climb the hill better Stay in your own lane when driving on two lane roads in hills or mountains Do not swing wide or cut across the center of the road Drive at speeds that let you stay in your own lane As you go over the top of a hill be alert There could be somethin...

Page 156: ... cloth and reflective warning triangles And if you will be driving under severe conditions include a small bag of sand a piece of old carpet or a couple of burlap bags to help provide traction Be sure you properly secure these items in your vehicle Driving on Snow or Ice Most of the time those places where the tires meet the road probably have good traction However if there is snow or ice between ...

Page 157: ...le ever gets stuck in sand mud ice or snow See If Your Vehicle is Stuck in Sand Mud Ice or Snow on page 160 Even if your vehicle has TCS you will want to slow down and adjust your driving to the road conditions Under certain conditions you may want to turn the TCS off such as when driving through deep snow and loose gravel to help maintain vehicle motion at lower speeds See Traction Control System...

Page 158: ...er bridges Sometimes the surface of a curve or an overpass may remain icy when the surrounding roads are clear If you see a patch of ice ahead of you brake before you are on it Try not to brake while you are actually on the ice and avoid sudden steering maneuvers If You Are Caught in a Blizzard If you are stopped by heavy snow you could be in a serious situation You should probably stay with your ...

Page 159: ...und the base of your vehicle if any is blocking your exhaust pipe And check around again from time to time to be sure snow does not collect there Open a window just a little on the side of the vehicle that is away from the wind This will help keep CO out Run your engine only as long as you must This saves fuel When you run the engine make it go a little faster than just idle That is push the accel...

Page 160: ...er to free your vehicle when it is stuck you will need to spin the wheels but you do not want to spin your wheels too fast The method known as rocking can help you get out when you are stuck but you must use caution CAUTION If you let your vehicle s tires spin at high speed they can explode and you or others could be injured And the transmission or other parts of the vehicle can overheat That coul...

Page 161: ...ause a rocking motion that may free your vehicle If that does not get your vehicle out after a few tries it may need to be towed out If your vehicle does need to be towed out see Towing Your Vehicle on page 164 Tow Hooks CAUTION These hooks when used are under a lot of force Always pull the vehicle straight out Never pull on the hooks at a sideways angle The hooks could break off and you or others...

Page 162: ... the maximum weight for the front and rear axles called the Gross Axle Weight Rating GAWR To find out the actual loads on your front and rear axles go to a weigh station and weigh your vehicle Your dealer can help you with this Be sure to spread out your load equally on both sides of the center line Never exceed the GVWR for your vehicle or the GAWR for either the front or rear axle And if you do ...

Page 163: ... as the vehicle goes If you have to stop or turn quickly or if there is a crash they keep going CAUTION Things you put inside your vehicle can strike and injure people in a sudden stop or turn or in a crash Put things in the cargo area of your vehicle Try to spread the weight evenly Never stack heavier things like suitcases inside the vehicle so that some of them are above the tops of the seats Do...

Page 164: ...N Continued CAUTION Continued Always secure the vehicle on each side with separate safety chains when towing it Working on air brakes without first using the release studs to compress the springs can lead to injury Never work on the air brakes chambers without first using the release studs to compress the brake springs When the brake springs are manually compressed you will have no brakes Release ...

Page 165: ...move the shift lever If there was an accident what was damaged When the towing service arrives let the tow operator know that this manual contains towing instructions The operator may want to see them Here are specific towing instructions Towing Your Vehicle From the Front Front Wheels Off the Ground Before Towing Block the rear wheels of the disabled vehicle On vehicles with air brakes release th...

Page 166: ...ntil lift chain slack has been taken up 4 Raise the vehicle to the required height Rear Axle 1 Disconnect the propshaft at the rear axle 2 Secure the propshaft to the frame or the crossmember After Towing 1 Block the rear wheels and install the propshafts 2 Check for proper phasing of universal joints 3 Apply the emergency brake system before disconnecting from the towing vehicle 4 Check and fill ...

Page 167: ...e brake chamber springs as outlined in this section This is to prevent the possibility of the emergency brake being applied during towing On vehicles with hydraulic brakes release the parking brake fully by moving the lever to the fully released position If there is damage or suspected damage to the axle s remove the axle shafts Cover the hub openings to prevent the loss of lubricant or entry of d...

Page 168: ...ecting from the towing vehicle 3 Check and fill the rear axle with oil as required Releasing Air Operated Parking Brakes If your vehicle has air brakes you could have a special towing problem If your vehicle has to be towed because of a complete loss of air pressure from both systems the parking brakes will have automatically engaged The tow operator can release the brakes manually by using the fo...

Page 169: ...e brakes Follow the same procedure to release the other brake or brakes 7 At the repair facility apply air pressure of at least 70 psi 480 kPa to the brake chambers either from an external air supply or the vehicle s air system 8 Turn the stud nut counterclockwise several turns Remove the stud from the chamber 9 Replace the stud and washer and tighten the nut into the side of the chamber 10 Replac...

Page 170: ...t will connect to the trailer supplying power to the trailer s lighting system When not in use it is stored in the trailer air hose storage bracket Heavy Duty Trailer Wiring Package Your vehicle may be equipped with an eight wire trailer towing harness This harness with a seven pin universal heavy duty trailer connector is attached to a bracket on the platform hitch The Center High Mounted Stoplam...

Page 171: ...aulic Clutch 195 Engine Coolant 196 Coolant Surge Tank Pressure Cap 199 Engine Overheating 199 Cooling System 202 Power Steering Fluid 206 Windshield Washer Fluid 207 Brakes 208 Battery 214 Jump Starting 215 Rear Axle 220 Rear Axle Shift Motor 221 Cab Tilting 221 Before You Tilt the Cab 221 Tilting the Cab 222 Lowering the Cab 225 Lifting the Front Panel 227 Noise Control System 228 Tampering with...

Page 172: ...e 247 Windshield and Wiper Blades 248 Aluminum Wheels 248 Tires 249 Sheet Metal Damage 249 Finish Damage 249 Underbody Maintenance 250 Chemical Paint Spotting 250 Vehicle Care Appearance Materials 251 Vehicle Identification 252 Vehicle Identification Number VIN 252 Electrical System 252 Add On Electrical Equipment 252 Headlamp Wiring 252 Windshield Wiper Fuses 253 Fusible Links 253 Power Windows a...

Page 173: ...want to keep your GM vehicle all GM Genuine GM parts have one of these marks California Proposition 65 Warning Most motor vehicles including this one contain and or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm Engine exhaust many parts and systems including some inside the vehicle many fluids and some component wear by products contai...

Page 174: ...ehicle Be sure to use the proper nuts bolts and other fasteners English and metric fasteners can be easily confused If you use the wrong fasteners parts can later break or fall off You could be hurt If you want to do some of your own service work you will want to use the proper service manual It tells you much more about how to service your vehicle than this manual can To order the proper service ...

Page 175: ... vehicle Do not change the fan drive ratio or increase the governed speed of the vehicle without getting the necessary information from your dealer CAUTION Continued CAUTION Continued Winter Fronts Grille Covers or Obstructions Winter Fronts grille covers or other add on equipment causing obstructions in front or behind the fan should not be used on this vehicle If this causes the fan to eventuall...

Page 176: ...you how to restart your engine What Fuel to Use In the United States for best results use No 2 D diesel fuel year round above and below freezing conditions as oil companies blend No 2 D fuel to address climate differences No 1 D diesel fuel may be used in very cold temperatures when it stays below 0 F or 18 C however it will produce a power and fuel economy loss Avoid the use of No 1 D diesel fuel...

Page 177: ...se the automatic pump nozzle to shut off even though your tank is not full If this happens just wait for the foaming to stop and then continue to fill your tank See Filling the Tank on page 185 CAUTION Heat coming from the engine may cause the fuel to expand and force the fuel out of your tank If something ignites the fuel a fire could start and people could be burned To help avoid this fill your ...

Page 178: ...n the Engine Manufacturers Association EMA has identified properties of an improved diesel fuel for better engine performance and durability FQP 1A Diesel fuels corresponding to the EMA description could provide better starting less noise and better vehicle performance If there are questions about the fuel you are using contact your fuel supplier Very Cold Weather Operation Follow the instructions...

Page 179: ...your fuel system may still need to be cleaned Your dealer can advise you of the appropriate solution If your fuel tank needs to be purged to remove water see your dealer or a qualified technician Improper purging can damage your fuel system Sometimes water can be pumped into your fuel tank along with your diesel fuel This can happen if a service station does not regularly inspect and clean its fue...

Page 180: ...en drain the filter system Light stays on immediately after refueling and a large amount of water was possibly pumped into the fuel tank Fuel tank purging is required See your dealer for assistance Notice If you drive when this warning indicator is on you can damage your fuel injection system and your engine If the indicator comes on right after you refuel it means water was pumped into your fuel ...

Page 181: ...l or motor oil and place it in the bowl gland 6 Spin the bowl onto the new filter element snugly by hand Do not use tools to tighten them together 7 Lubricate the filter top seal with clean diesel fuel or motor oil 8 Fill the filter element bowl assembly with clean diesel fuel and attach it onto the mounting head Hand tighten an additional one third to one half turn after full seal contact is made...

Page 182: ...ed for servicing or replacement The fuel lines are removed or disconnected for servicing The fuel filter water drain valve is opened while the engine is running Air in the fuel lines will not harm the engine or the vehicle However the engine may not be able to start until the fuel system is primed and the air is removed For vehicles with cruise control you can prime the vehicle and remove the air ...

Page 183: ...e screw 2 left counterclockwise several turns to open the breather valve 8 Use the palm of your hand to repeatedly press and release the plunger 1 at the top of the fuel filter priming pump until fuel begins to seep from the breather valve 9 Tighten the fuel filter breather screw 2 to the specified torque 4 9 Y 43 in lbs 10 Use the palm of your hand to press and release the plunger 1 at the top of...

Page 184: ...ou are parked on a slope you may need to add up to 5 gallons 18 9 liters of fuel 2 Follow the fuel priming procedure earlier in this section to prime the fuel filter 3 Close the air bleed valve 4 Turn the ignition key to START for 10 to 15 seconds at a time until your engine starts If the engine tries to run but does not run smoothly increase the rpm a little using the accelerator pedal This will ...

Page 185: ...efueling your vehicle This is against the law in some places Keep children away from the fuel pump never let children pump fuel The fuel cap may be on either or both sides of your vehicle depending upon option content To remove the cap turn it slowly counterclockwise CAUTION If you spill fuel and then something ignites it you could be badly burned Fuel can spray out on you if you open the fuel cap...

Page 186: ...ons system See Malfunction Indicator Lamp on page 111 Filling a Portable Fuel Container CAUTION Never fill a portable fuel container while it is in your vehicle Static electricity discharge from the container can ignite the fuel vapor You can be badly burned and your vehicle damaged if this occurs To help avoid injury to you and others Dispense fuel only into approved containers Do not fill a cont...

Page 187: ...erating temperature and the oil is warm turn off the engine and allow at least five minutes for the oil to drain back into the oil pan If you do not do this the oil dipstick might not show the actual level If the engine has not been run long enough to bring it up to normal operating temperature and the oil is cool turn off the engine and allow 30 minutes for the oil to drain back into the oil pan ...

Page 188: ...sure to add enough oil to put the level somewhere in the proper operating range Push the dipstick all the way back in when you are through What Kind of Engine Oil to Use Look for these two things CJ 4 or CI 4 Oils designated as API CJ 4 or CI 4 are recommended for your vehicle The CJ 4 or CI 4 designations may appear either alone together or in combination with other API designations such as API C...

Page 189: ...hese numbers on the oil container show its viscosity or thickness Do not use other viscosity oils such as SAE 10W 40 or SAE 20W 50 This doughnut shaped logo symbol is used on most oil containers to help you select the correct oil It means that the oil has been certified by the American Petroleum Institute You should look for this on the oil container and use only those oils that display this logo ...

Page 190: ...m every time the oil is changed When the system has calculated that oil life has been diminished it will indicate that an oil change is necessary A change engine oil light will come on See Change Engine Oil Light on page 113 Change your oil as soon as possible within the next 600 miles 1 000 km or 30 hours of engine operation whichever occurs first It is possible that if you are driving under the ...

Page 191: ...ehicle the Engine Oil Life System has not reset Repeat the procedure What to Do with Used Oil Used engine oil contains certain elements that may be unhealthy for your skin and could even cause cancer Do not let used oil stay on your skin for very long Clean your skin and nails with soap and water or a good hand cleaner Wash or properly dispose of clothing or rags containing used engine oil See the...

Page 192: ...o be replaced For vehicles without a change indicator inspect the air cleaner filter every 15 000 miles 25 000 km and replace the filter every 30 000 miles 50 000 km If you are driving in dusty dirty conditions inspect the filter at each engine oil change How to Inspect the Engine Air Cleaner Filter Locate the filter change indicator if equipped When the change indicator turns black or is in the r...

Page 193: ...rews are tightened securely when reinstalling the filter cover CAUTION Operating the engine with the air cleaner filter off can cause you or others to be burned The air cleaner not only cleans the air it helps to stop flames if the engine backfires If it is not there and the engine backfires you could be burned Do not drive with it off and be careful working on the engine with the air cleaner filt...

Page 194: ...ission Operator s Manual that came with the vehicle for proper change intervals Manual Transmission Fluid When to Check A good time to have it checked is when the engine oil is checked Refer to the Maintenance Schedule to find out when to check and change your manual transmission fluid See Scheduled Maintenance on page 269 How to Check and What to Use Check the fluid level only when your engine is...

Page 195: ...mmended Fluids and Lubricants on page 295 3 Reinstall the filler plug Be sure the plug is fully seated Hydraulic Clutch It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system Adding fluid will not correct a leak A fluid loss in this system could indicate a problem Have the system inspected and repaired When to Check and What to Use The hydraulic clutch...

Page 196: ...problem with engine overheating see Engine Overheating on page 199 A 50 50 mixture of clean drinkable water and DEX COOL coolant will Give freezing protection down to 34 F 37 C Give boiling protection up to 265 F 129 C Protect against rust and corrosion Help keep the proper engine temperature Let the warning lights and gages work as they should Notice Using coolant other than DEX COOL may cause pr...

Page 197: ...ngine could catch fire and you or others could be burned Use a 50 50 mixture of clean drinkable water and DEX COOL coolant Notice If you use an improper coolant mixture your engine could overheat and be badly damaged The repair cost would not be covered by your warranty Too much water in the mixture can freeze and crack the engine radiator heater core and other parts If you have to add coolant mor...

Page 198: ...m and scalding liquids to blow out and burn you badly Never turn the surge tank pressure cap even a little when the engine and radiator are hot The vehicle must be on a level surface When your engine is cold the coolant level should be at the COLD FILL mark or higher If the low coolant light comes on in the instrument panel cluster and stays on it means you are low on engine coolant See Low Coolan...

Page 199: ... driver s side of the vehicle Notice Your vehicle s surge tank pressure cap is designed for use with medium duty cooling systems only If the surge tank pressure cap is not tightly installed coolant loss and possible engine damage may occur Be sure the cap is properly and tightly secured Engine Overheating You will find an engine coolant temperature warning gage as well as a low coolant warning lig...

Page 200: ...erheats and get out of the vehicle until the engine is cool Notice If your engine catches fire because you keep driving with no coolant your vehicle can be badly damaged The costly repairs would not be covered by your warranty If No Steam Is Coming From Your Engine An overheat warning along with a low coolant light can indicate a serious problem See Low Coolant Warning Light on page 110 for more i...

Page 201: ...have the overheat warning you can drive Just to be safe drive slower for about 10 minutes If the warning does not come back on you can drive normally If the warning continues and you have not stopped pull over stop and park your vehicle right away If there is still no sign of steam you can push down the accelerator until the engine speed is about twice as fast as normal idle speed for at least thr...

Page 202: ...u may have a leak at the pressure cap or in the radiator hoses heater hoses radiator water pump or somewhere else in the cooling system CAUTION Heater and radiator hoses and other engine parts can be very hot Do not touch them If you do you can be burned Do not run the engine if there is a leak If you run the engine it could lose all coolant That could cause an engine fire and you could be burned ...

Page 203: ...FULL mark add a 50 50 mixture of clean drinkable water and DEX COOL coolant at the coolant surge tank but be sure the cooling system including the coolant surge tank pressure cap is cool before you do it See Engine Coolant on page 196 for more information If no coolant is visible in the surge tank add coolant as follows CAUTION Steam and scalding liquids from a hot cooling system can blow out and ...

Page 204: ...her water can freeze and crack the engine radiator heater core and other parts Use the recommended coolant and the proper coolant mixture CAUTION You can be burned if you spill coolant on hot engine parts Coolant contains ethylene glycol and it will burn if the engine parts are hot enough Do not spill coolant on a hot engine 1 You can remove the coolant surge tank pressure cap when the cooling sys...

Page 205: ...the upper radiator hose getting hot Watch out for the engine cooling fan By this time the coolant level inside the coolant surge tank may be lower If the level is lower add more of the proper mixture to the coolant surge tank until the level reaches slightly above the COLD FULL mark 5 Then replace the pressure cap Be sure the pressure cap is hand tight and fully seated 205 ...

Page 206: ...evel is low this can cause the brake or service brake soon warning lights to come on If either light remains on after you have added power steering fluid to the proper level then shut off the engine for 10 seconds This should reset the brake warning lights If one or both lights stay on though see Hydraulic Brake System Warning Lights under Brake System Warning Light on page 107 for more informatio...

Page 207: ... panel on the driver s side of the vehicle Notice When using concentrated washer fluid follow the manufacturer s instructions for adding water Do not mix water with ready to use washer fluid Water can cause the solution to freeze and damage your washer fluid tank and other parts of the washer system Also water does not clean as well as washer fluid Fill your washer fluid tank only three quarters f...

Page 208: ...with the ignition off Then clean one of the reservoir caps and the area around the cap and remove it The fluid level should be even with the bottom ring of the filler opening If it is low add enough fluid to fill the reservoir to the proper level What to Add Use the proper fluid listed in the Maintenance Schedule Use new brake fluid from a sealed container only Always clean the brake fluid reservo...

Page 209: ... always be replaced as complete axle sets Brake Pedal Travel See your dealer if the brake pedal does not return to normal height or if there is a rapid increase in pedal travel This could be a sign of brake trouble Brake Adjustment Every time you make a brake stop the brakes adjust for wear Brake Adjustment on Air Braked Vehicles Your vehicle has automatic slack adjusters Every time you make a bra...

Page 210: ...worse The braking performance you have come to expect can change in many other ways if someone puts in the wrong replacement brake parts Air Brake Systems If your vehicle has air brakes it is important to get rid of moisture in the system Moisture will damage the system if it is not removed daily There are two ways to do this One is automatic through the air brake vehicle s air dryer with integral...

Page 211: ...compressor is used to run options that require pressurized air such as air horn air seat exhaust restrictor or an exhaust brake The air compressor is used when vehicles are not equipped with an air brake system The air supply for this system must be maintained by releasing the drain valve to eject any moisture that may have built up in the system It is recommended that this system be drained on a ...

Page 212: ...assis Lubrication Item Number Item Remarks 1 Brake Camshaft Brake Caliper Rails One fitting each apply sparingly For caliper rails apply Aero Shell 5 Lubricant 2 Steering Column Slip Joint One fitting 212 ...

Page 213: ... Clutch Release Bearing Cup or fitting 13 Battery Terminal except ST type Keep coated with petroleum jelly 14 Parking Brake Bell Crank One fitting 15 Transmission Fill to level of filler plug 15 Transmission Automatic Check fluid level 16 Propshaft Slip Joints One fitting each joint lubricate with GM Part No 1051344 Wheel Bearing Lubricant 17 Propshaft U joints One fitting each joint 1480 and 1550...

Page 214: ...mend an ACDelco replacement battery Warning Battery posts terminals and related accessories contain lead and lead compounds chemicals known to the State of California to cause cancer and reproductive harm Wash hands after handling Vehicle Storage If you are not going to drive your vehicle for 25 days or more remove the black negative cable from each battery This will help keep the batteries from r...

Page 215: ...our vehicle that would not be covered by your warranty Trying to start your vehicle by pushing or pulling it will not work and it could damage your vehicle 1 Check the other vehicle It must have a 12 volt battery or batteries with a negative ground system Notice If the other vehicle s system is not a 12 volt system with a negative ground both vehicles can be damaged Only use vehicles with 12 volt ...

Page 216: ...ve your radio or other accessories on during the jump starting procedure they could be damaged The repairs would not be covered by your warranty Always turn off your radio and other accessories when jump starting your vehicle 3 Turn off the ignition on both vehicles Unplug unnecessary accessories plugged into the cigarette lighter or accessory power outlets Turn off the radio and all lamps that ar...

Page 217: ...e with water and get medical help immediately CAUTION Fans or other moving engine parts can injure you badly Keep your hands away from moving parts once the engine is running 5 Check that the jumper cables do not have loose or missing insulation If they do you could get a shock The vehicles could be damaged too Before you connect the cables here are some basic things you should know Positive will ...

Page 218: ...e other end of the negative cable does not go to the dead battery It goes to a heavy unpainted metal engine part or to a remote negative terminal on the vehicle with the dead battery 9 Connect the other end of the negative cable at least 18 inches 45 cm away from the dead battery but not near engine parts that move The electrical connection is just as good there and the chance of sparks getting ba...

Page 219: ...gine Part or Remote Negative Terminal B Good Battery or Remote Positive and Remote Negative Terminals C Dead Battery or Remote Positive Terminal To disconnect the jumper cables from both vehicles do the following 1 Disconnect the black negative cable from the vehicle that had the dead batteries 2 Disconnect the black negative cable from the vehicle with the good batteries 3 Disconnect the red posi...

Page 220: ...ide Avoid driving your vehicle through deep water You should avoid driving your vehicle through deep puddles or standing water If you must drive through water that is higher than the front or rear axle see your dealer immediately afterward to have the condition of the axle lubricant checked How to Check Lubricant To get an accurate reading the vehicle should be on a level surface If the level is b...

Page 221: ... then replace the plug What to Use Refer to your Maintenance Schedule to determine what kind of lubricant to use See Part C Recommended Fluids and Lubricants on page 295 Cab Tilting Before You Tilt the Cab Most fluids and lubricants requiring regular checking can be accessed at the back of the cab If you need to gain access to components under the cab follow this entire procedure carefully Find a ...

Page 222: ...he cab do the following 1 Locate the lever pin at the rear of the cab on the passenger s side 2 Turn the lever pin so that the tab is aligned with the slot Remove the lever pin 3 Move the primary tilt lever all the way down 222 ...

Page 223: ...4 Pull the secondary latch lever to release the hook from the catch at the back of the cab 5 Using the handle located at the bottom of the cab at the back tilt the cab forward 223 ...

Page 224: ... position could fall causing serious injury To ensure that the cab is securely locked in position and will not move the safety lock pin A must always be inserted into the cab support B when the cab is in the tilted position CAUTION Things that burn can get on hot engine parts and start a fire These include liquids like fuel oil coolant brake fluid windshield washer and other fluids and plastic or ...

Page 225: ...d follow the instructions below carefully Before lowering the cab be sure all filler caps are on properly 1 Remove the safety lock pin from the cab support by turning it and pulling it out 2 Squeeze the lever on the cap support to release the detent 225 ...

Page 226: ...down 4 Push the primary tilt lever upward fully to lock the cab to the chassis 5 Reinstall the pin and turn it to keep the primary tilt lever from moving downward CAUTION An unsecured cab could move suddenly causing an accident or an injury Be sure the tilt cab is properly secured to the chassis before moving the vehicle 226 ...

Page 227: ... the bottom of the instrument panel and pull it toward you See Instrument Panel Overview on page 84 for more information on location of the release catch 2 Then go to the front of the vehicle and lift the panel at the center Use the prop rod to hold the panel open 3 To close the front panel remove the prop rod close the panel and push firmly on both sides to ensure that the panel is fully closed 2...

Page 228: ...prohibits the following acts or the causing thereof 1 The removal or rendering inoperative by any person other than for purposes of maintenance repair or replacement of any device or element of design incorporated into any new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or 2 The use of the vehicle after such device or eleme...

Page 229: ... the air cleaner Exhaust Removal of the muffler and or resonator Removal of the exhaust pipes and exhaust pipe clamps Bulb Replacement It is recommended that all bulbs be replaced by your dealer Windshield Wiper Blade Replacement Windshield wiper blades should be inspected at least twice a year for wear or cracking See Wiper Blade Check under At Least Twice a Year on page 290 for more information ...

Page 230: ... in different ways Here s how to remove the wiper blade 1 Pull the windshield wiper arm away from the windshield 2 Push the release lever and slide the wiper assembly toward the driver s side of the vehicle 3 Install a new blade by reversing Steps 1 and 2 230 ...

Page 231: ...n on filter It is located on the driver s side frame rail It has a clear plastic drain bowl at the bottom Check the drain bowl occasionally for any water or particles To drain the water or to replace the element follow the water draining and element replacement procedure under Water in Fuel on page 179 Secondary Fuel Filter and Heater Your vehicle may have this spin on filter and fuel heater It is...

Page 232: ...hecked If your vehicle has oil filled hubs occasionally check to see if they have enough oil You can tell if there is oil there by using the circular gage on the sight glass If there isn t clean the rubber fill plug in the center of the glass and then remove it Be careful not to allow any dirt or water to get into the oil Add enough of the recommended oil to bring it up to the level mark that you ...

Page 233: ... an air out and a serious accident See Loading Your Vehicle on page 162 CAUTION Continued CAUTION Continued Underinflated tires pose the same danger as overloaded tires The resulting accident could cause serious injury Check all tires frequently to maintain the recommended pressure Tire pressure should be checked when your vehicle s tires are cold See Inflation Tire Pressure on page 234 Overinflat...

Page 234: ...ture or irregular wear Poor handling Reduced fuel economy If your tires have too much air over inflation you can get the following Unusual wear Poor handling Rough ride Needless damage from road hazards When to Check Check your tires once a month or more Also check the tire pressure of the spare tire if your vehicle has one How to Check Use a good quality pocket type gage to check tire pressure Yo...

Page 235: ...henever a wheel wheel bolt or wheel nut is removed or serviced repeat the 100 miles 160 km and then 1 000 mile 1 600 km wheel nut tightness check See Tightening the Wheel Nuts on page 237 for wheel nut tightening information and proper torque values CAUTION If you operate your vehicle with a tire that is badly underinflated the tire can overheat An overheated tire can lose air suddenly or catch fi...

Page 236: ...tinued CAUTION Continued bias belted tires the vehicle may not handle properly and you could have a crash Be sure to use the same type of tires all around When you replace tires make sure they are the same size load range speed rating and construction type bias bias belted or radial as your original tires Wheel Alignment and Tire Balance The wheels on your vehicle were aligned at the factory to gi...

Page 237: ...ey must be First use these pictures to decide what kind of wheels you have Then refer to the following steps for the wheels you have Hub Piloted Wheels 8 Hole or 10 Hole The studs and nuts used with these wheels have right hand threads 1 With intermittent pilot pads position a pad at 12 o clock to center the wheel and reduce run out 2 Put the tire and rim assembly on the axle hub Install the outer...

Page 238: ...l the surfaces B between the nuts C and washers A Do not oil the studs or the threads of the nut 6 Tighten the nuts to 400 lb ft 542 Y if an 8 hole stud or 480 lb ft 650 Y if a 10 hole stud using the following diagrams 8 Hole 10 Hole Front 10 Hole Rear 238 ...

Page 239: ... larger or distorted in any way Inspect hubs and CAUTION Continued CAUTION Continued hub piloted wheels for damage Because of loose running wheels piloting pad damage may occur and require replacement of the entire hub for proper centering of the wheels When replacing studs hubs wheel nuts or wheels be sure to use GM original equipment parts CAUTION Rust or dirt on a wheel or on the parts to which...

Page 240: ...e wheel If the wheel leaks air replace it Your dealer will know the kind of wheel you need Each new wheel should have the same load carrying capacity diameter width offset and be mounted the same way as the one it replaces If you need to replace any of your wheels wheel bolts or wheel nuts replace them only with new GM original equipment parts This way you will be sure to have the right wheel whee...

Page 241: ...hange the Gross Axle Weight Rating GAWR or the Gross Vehicle Weight Rating GVWR of your vehicle See Loading Your Vehicle on page 162 for more information Notice The wrong wheel can cause trouble in bearing life brake cooling speedometer odometer calibration headlamp aim bumper height vehicle ground clearance stopping distance and tire clearance to the body and chassis You could also have other pro...

Page 242: ...ant the vehicle to go It may be very bumpy and noisy but you can still steer Gently brake to a stop well off the road if possible If a tire goes flat avoid further tire and wheel damage by driving slowly to a level place and turn on your hazard warning flashers See Hazard Warning Flashers on page 86 CAUTION Your vehicle when new did not include tire changing equipment or a place to store a tire in...

Page 243: ... Vehicle Your vehicle s interior will continue to look its best if it is cleaned often Although not always visible dust and dirt can accumulate on your upholstery Dirt can damage carpet fabric leather and plastic surfaces Regular vacuuming is recommended to remove particles from your upholstery It is important to keep your upholstery from becoming and remaining heavily soiled Soils should be remov...

Page 244: ...l buttons and knobs using a small brush with soft bristles Your GM dealer has a product for cleaning your vehicle s glass Should it become necessary you can also obtain a product from your GM dealer to remove odors from your vehicle s upholstery Do not clean your vehicle using the following cleaners or techniques Never use a knife or any other sharp object to remove a soil from any interior surfac...

Page 245: ...th with water or club soda 2 Wring the cloth to remove excess moisture 3 Start on the outside edge of the soil and gently rub toward the center Continue cleaning using a clean area of the cloth each time it becomes soiled 4 Continue to gently rub the soiled area until the cleaning cloth remains clean 5 If the soil is not completely removed use a mild soap solution and repeat the cleaning process t...

Page 246: ...form manner Some commercial products may increase gloss on your instrument panel The increase in gloss may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions Care of Safety Belts Keep belts clean and dry CAUTION Do not bleach or dye safety belts If you do it may severely weaken them In a crash they might not be able to pro...

Page 247: ...lenses Follow instructions under Washing Your Vehicle on page 246 Finish Care Occasional waxing or mild polishing of the vehicle by hand may be necessary to remove residue from the paint finish You can get GM approved cleaning products from your dealer See Vehicle Care Appearance Materials on page 251 Notice Machine compounding or aggressive polishing on a basecoat clearcoat paint finish may damag...

Page 248: ...wder and water solution The windshield is clean if beads do not form when it is rinsed with water Grime from the windshield will stick to the wiper blades and affect their performance Clean the blade by wiping vigorously with a cloth soaked in full strength windshield washer solvent Then rinse the blade with water Check the wiper blades and clean them as necessary replace blades that look worn Alu...

Page 249: ...sh and or tires When applying a tire dressing always wipe off any overspray from all painted surfaces on your vehicle Sheet Metal Damage If the vehicle is damaged and requires sheet metal repair or replacement make sure the body repair shop applies anti corrosion material to parts repaired or replaced to restore corrosion protection Original manufacturer replacement parts will provide the corrosio...

Page 250: ...e frame should be loosened before being flushed Your dealer or an underbody car washing system can do this for you Chemical Paint Spotting Some weather and atmospheric conditions can create a chemical fallout Airborne pollutants can fall upon and attack painted surfaces on the vehicle This damage can take two forms blotchy ring shaped discolorations and small irregular dark spots etched into the p...

Page 251: ...els and wire wheel covers Finish Enhancer Removes dust fingerprints and surface contaminants Spray on wipe off Description Usage Swirl Remover Polish Removes swirl marks fine scratches and other light surface contamination Cleaner Wax Removes light scratches and protects finish Foaming Tire Shine Low Gloss Cleans shines and protects in one easy step no wiping necessary Wash Wax Concentrate Medium ...

Page 252: ... help you identify your vehicle s engine specifications and replacement parts Electrical System Add On Electrical Equipment Notice Do not add anything electrical to your vehicle unless you check with your dealer first Some electrical equipment can damage your vehicle and the damage would not be covered by your warranty Some add on electrical equipment can keep other components from working as they...

Page 253: ...s burned beyond recognition consult your GM dealer for the proper size Replace a fusible link with one of the same size and insulation type Fusible link insulation is a special purpose high temperature material Power Windows and Other Power Options Circuit breakers in the fuse panel protect the power windows and other power accessories When the current load is too heavy the circuit breaker opens T...

Page 254: ...strument panel and lower the cover down to snap into place If you ever have a problem on the road and don t have a spare fuse you can borrow one of the correct value Just pick some feature of your vehicle that you can get along without like the radio or cigarette lighter and use its fuse if it is the value you need Remember to replace the fuse as soon as you can These fuses are non cycling do not ...

Page 255: ...Lighter 3 Engine Control Module Ignition 1 4 Transmission Control Module Ignition Chime Fuses Usage 5 Assembly Line Data Link Connector 6 Warning Lamp Ignition Relay Blower Motor Motor Relay Auxiliary Relay Power Window Relay Interior Relay 255 ...

Page 256: ...12 Auxiliary Ignition ON 13 Auxiliary Battery Direct 14 Driver s Side Headlamp 15 Passenger s Side Headlamp 16 Headlamp Fuses Usage 17 Heated Fuel 18 Meter Transmission Control Module 19 Identification Lamp Marker Lamp Tail Lamp Lighted Mirror Illumination Lamp 20 Cool Condenser Fan Motor Cooler Compressor 21 Wiper Motor Washer Motor 22 Heated Mirror Two Speed Axle Relay 23 Empty 24 Fan Motor Air ...

Page 257: ...not use maxi fuses of higher amperage than those indicated on the maxi fuse block Fuses Usage ST TURN HAZ Stoplamp Turn Signals Hazard Warning Flashers IGN SW 3 Air Conditioner Axle Chassis INT EXT LIGHTS Parking Lamps Dome Lamp Instrument Panel Lights HEAD LAMP Headlamps Daytime Running Lamps AUX WRG Auxiliary Wiring Parking Brake IGN SW 1 Ignition Switch Washer Wiper Crank Radio HYD PUMP Hydraul...

Page 258: ...e A Relay Block A B Relay Block B C Relay Block C Relay Block A Usage 1 Power Window 2 Power Main 3 High Beam 4 Lighting 5 Lighting Low High 6 Trailer Turn Signal Left Headlamp 7 Tail Lamp 8 Marker Lamp 9 Trailer Turn Signal Right Headlamp Relay Block A 258 ...

Page 259: ...gnition 1 6 Ignition 2 7 Auxiliary 8 Horn 9 Ignition 3 10 Dome Lamp 11 Exhaust Brake 12 Power Take Off Control Relay Block C Usage 1 Parking Brake Daytime Running Lamps Off 2 Daytime Running Lamps On 3 Not Used 4 Parking Lamps Daytime Running Lamps 5 Fuel Filter Heated Fuel 6 Stop Lamp Relay Block B Relay Block C 259 ...

Page 260: ... Make sure to add enough extra oil to fill the auxiliary oil filter system For vehicles equipped with LUBERFINER 750 C add 14 quarts 13 2 L Fuel Tank Standard Single 50 0 gal 189 3 L Optional Single 1 50 0 gal 189 3 L Optional Dual 2 75 0 gal 283 9 L Optional Dual 3 100 0 gal 378 5 L 1 Single 50 gallon 189 L tanks Not applicable to 4X2 vehicles with 128 inch or 140 inch wheelbases and not applicab...

Page 261: ...front HPE RS404 rear 32 0 pt 15 1 L Rear Axle Two Speed 19060T HPL 21060T H15 38 0 pt 18 0 L 23080T H25 44 0 pt 20 8 L Transmission Fluid Automatic 2400 Series 2500 Series 35 0 pt 16 6 L MD 3060 P MD 3560 P with PTO Provision 59 0 pt 28 0 L MD 3060 P MD 3560 P without PTO Provision 52 0 pt 24 6 L Add 2 pints 1 L when changing spin on or remote filter See the Allison Automatic Transmission Operator...

Page 262: ...ding be sure to fill to the approximate level as recommended in this manual Recheck the fluid level after filling Engine Specifications Engine RPO Type Firing Order Isuzu 6H LG4 L6 1 5 3 6 2 4 Normal Maintenance Replacement Parts Part Part Number Oil Filter GM Part No 94037791 Engine Air Cleaner Filter Donaldson P533930 Chassis Mounted Fuel Filter Racor 15725783 Engine Mounted Fuel Filter GM Part ...

Page 263: ...Engine Drive Belt Routing Belt routing for non air conditioning option shown Dotted line shows routing for vehicles with air conditioning Isuzu 6H Diesel Engine 263 ...

Page 264: ... NOTES 264 ...

Page 265: ...cheduled Maintenance Services 268 Using the Maintenance Schedule 268 Scheduled Maintenance Supplements 269 Scheduled Maintenance 269 Part B Owner Checks and Services 289 At Each Fuel Fill 289 At Least Twice a Year 290 At Least Once a Year 294 Part C Recommended Fluids and Lubricants 295 Part D Maintenance Record 297 Section 6 Maintenance Schedule 265 ...

Page 266: ...ps to keep your vehicle in good working condition but also helps the environment Improper vehicle maintenance can even affect the quality of the air we breathe Improper fluid levels or the wrong tire inflation can increase the level of emissions from your vehicle To help protect our environment and to keep your vehicle in good condition be sure to maintain your vehicle properly How This Section is...

Page 267: ... Information on page 312 Part B Owner Checks and Services tells you what should be checked and when It also explains what you can easily do to keep your vehicle in good condition Part C Recommended Fluids and Lubricants lists some recommended products necessary to help keep your vehicle properly maintained These products or their equivalents should be used whether you do the work yourself or have ...

Page 268: ...ive If you have any questions on how to keep your vehicle in good condition see your dealer This part tells you the maintenance services you should have done and when to schedule them When you go to your dealer for your service needs you will know that GM trained and supported service people will perform the work using genuine GM parts The proper fluids and lubricants to use are listed in Part C M...

Page 269: ... services See Service Publications Ordering Information on page 312 100 Miles 160 km Wheel stud nut service 30 1 000 Miles 1 600 km Wheel stud nut service 30 Rear axle air shift motor service 9 7 500 Miles 12 000 km Check fluid levels or every 3 months whichever occurs first 1 5 Chassis lubrication service or every 6 months whichever occurs first 10 Spring to axle U bolts and shackle bolts service...

Page 270: ...nspect filter change indicator at every engine oil change See Engine Air Cleaner Filter on page 192 for more information Chassis lubrication service or every 6 months whichever occurs first 10 Check fluid levels or every 3 months whichever occurs first 1 5 Replace fuel filter or every 750 hours of engine operation whichever occurs first Steering system service 11 Front and rear suspension service ...

Page 271: ...f cooling and heater hoses and clamps Replace hoses if cracked swollen or damaged Wheels and tires service 13 Hydraulic brake service or every 6 months whichever occurs first 6 30 Parking brake service or every 6 months whichever occurs first 7 Air brake service or every 6 months whichever occurs first 26 Air brake automatic slack adjuster service or every 500 hours whichever occurs first 27 Check...

Page 272: ...92 for more information Check fluid levels or every 3 months whichever occurs first 1 5 Replace fuel filter or every 750 hours of engine operation whichever occurs first Chassis lubrication service or every 6 months whichever occurs first 10 Steering system service 11 Front and rear suspension service 12 Spring to axle U bolts and shackle bolts service 14 Exhaust system service or every 6 months w...

Page 273: ... are changed reset system See Engine Oil Life System on page 190 2 8 37 500 Miles 60 000 km Check fluid levels or every 3 months whichever occurs first 1 5 Chassis lubrication service or every 6 months whichever occurs first 10 Wheels and tires service 13 Hydraulic brake service or every 6 months whichever occurs first 6 30 Parking brake service or every 6 months whichever occurs first 7 Air brake...

Page 274: ...ed Inspect door hinge pins and bushings and replace as necessary Steering system service 11 Front and rear suspension service 12 Spring to axle U bolts and shackle bolts service 14 Exhaust system service or every 6 months whichever occurs first 2 3 15 Wheels and tires service 13 Hydraulic brake service or every 6 months whichever occurs first 6 30 Parking brake service or every 6 months whichever ...

Page 275: ... U joints or every 6 months whichever occurs first 50 000 Miles 80 000 km Inspect air compressor discharge port or every 6 months or every 1 800 hours whichever occurs first 52 500 Miles 84 000 km Check fluid levels or every 3 months whichever occurs first 1 5 Chassis lubrication service or every 6 months whichever occurs first 10 Wheels and tires service 13 Adjust valve lash or every 2 625 hours ...

Page 276: ...tor at every engine oil change See Engine Air Cleaner Filter on page 192 for more information Check fluid levels or every 3 months whichever occurs first 1 5 Replace fuel filter or every 750 hours of engine operation whichever occurs first Chassis lubrication service or every 6 months whichever occurs first 10 Inspect door hinge pins and bushings and replace as necessary Steering system service 11...

Page 277: ...and inspect the condition of cooling and heater hoses and clamps Replace hoses if cracked swollen or damaged Wheels and tires service 13 Hydraulic brake service or every 6 months whichever occurs first 6 30 Parking brake service or every 6 months whichever occurs first 7 Air brake service or every 6 months whichever occurs first 26 Air brake automatic slack adjuster service or every 500 hours whic...

Page 278: ...ion Chassis lubrication service or every 6 months whichever occurs first 10 Check fluid levels or every 3 months whichever occurs first 1 5 Replace fuel filter or every 750 hours of engine operation whichever occurs first Steering system service 11 Front and rear suspension service 12 Spring to axle U bolts and shackle bolts service 14 Exhaust system service or every 6 months whichever occurs firs...

Page 279: ...ichever occurs first 26 Air brake automatic slack adjuster service or every 500 hours whichever occurs first 27 Check air brake relay valve operation and check for leaks or every month or every 300 hours whichever occurs first Clean air brake application valve or every 3 months or every 300 hours whichever occurs first Lubricate linkage Air brake chamber service or every 2 months whichever occurs ...

Page 280: ...d inspect the condition of cooling and heater hoses and clamps Replace hoses if cracked swollen or damaged Steering system service 11 Front and rear suspension service 12 Spring to axle U bolts and shackle bolts service 14 Exhaust system service or every 6 months whichever occurs first 2 3 15 Inspect door hinge pins and bushings and replace as necessary Wheel bearing grease type service and whenev...

Page 281: ...ry 12 months or every 600 hours of engine operation whichever occurs first 2 Vehicles With Engine Oil Life System Only Check oil life system or every 12 months or every 600 hours of engine operation whichever occurs first If engine oil and filter are changed reset system See Engine Oil Life System on page 190 2 8 Lubricate U joints or every 6 months whichever occurs first 97 500 Miles 156 000 km C...

Page 282: ...0 000 Miles 240 000 km Cooling system service or every 60 months since last service whichever occurs first 2 23 Inspect engine drive belt replace as necessary 200 000 Miles 320 000 km Rear axle service Eaton Rockwell Spicer axles or every 12 months whichever occurs first 24 Remove disassemble clean and inspect the air brake trailer supply valve or every 2 years or every 7 200 hours whichever occur...

Page 283: ...rol Device 4 Applies to vehicles sold in the United States and is recommended for vehicles sold in Canada 5 Check fluid level in brake master cylinder power steering pump front and rear axles transmission and hydraulic spring parking brake pump if equipped A low fluid level in the brake master cylinder can indicate worn brake linings and should be checked accordingly 6 Inspect brake lines and hose...

Page 284: ...s in front suspension front axle and steering linkage DO NOT lubricate kingpin bushings with air pressure equipment instead use a hand grease gun to ensure complete purge and eliminate sealer cap distortion Front axle tie rod ends both upper and lower kingpin fittings and both steering linkage relay rod ends should be greased with the vehicle loaded on the ground and wheels turned straight ahead N...

Page 285: ...akage around pitman shaft and housing If leakage is evident lubricant oozing out not just oily film leak should be corrected immediately 12 Check front and rear suspension Look for damaged loose or missing parts or parts showing signs of wear or lack of lubrication Replace parts as needed 13 Adjust tire pressures as indicated on the Certification or Tire Information label for optimum tire life See...

Page 286: ...hields and underhood insulation for damage or looseness Adjust or replace as needed 19 Wheel bearing service Grease type Clean inspect and lubricate with the proper wheel bearing grease at designated intervals or when hubs are removed See Part C Recommended Fluids and Lubricants on page 295 Oil filled type Some wheel bearings are lubricated by axle lubricant When you have oil filled hubs use lubri...

Page 287: ...e Re pack upper kingpin roller bearing 26 Air brake service Inspect brake lines and hoses for proper hook up binding leaks cracks chafing etc Inspect drum brake linings for wear or cracks Inspect other brake parts at each wheel including drums wheel cylinders and piston heat shields boots and wheel speed sensor wiring Check brake pedal for excessive free play or travel or every 6 months whichever ...

Page 288: ... air brake automatic slack adjuster Check pushrod travel and auto adjustment operation Have serviced if needed 28 Air brake chamber service Check operation mounting clamps and air lines and check for leaks 29 Trailer brake hand control valve service Check operation lubricate cam and follower 30 Tighten the wheel stud nuts to the specified torque values at 100 miles 160 km Thereafter tighten them 1...

Page 289: ...fore operating the vehicle At Each Fuel Fill It is important for you or a service station attendant to perform these underhood checks at each fuel fill Engine Oil Level Check Check the engine oil level and add the proper oil if necessary See Engine Oil on page 187 Engine Coolant Level Check Check the engine coolant level and add DEX COOL coolant mixture if necessary See Engine Coolant on page 196 ...

Page 290: ...brication Silicone grease on weatherstrips will make them last longer seal better and not stick or squeak Apply silicone grease with a clean cloth During very cold damp weather more frequent application may be required Part C tells you what to use Body Lubrication Service Lubricate all exposed surfaces such as door checks door lock bolts lock strike plates door hinge bushings latches and dovetail ...

Page 291: ...nsmission Shift Indicator Check Check that the indicator points to the gear chosen Steering Check Be alert for any changes in steering action abnormal front tire wear or steering wheel position An inspection or service is needed when the steering wheel is harder to turn or has too much free play or if there are strange sounds when turning or parking Brake System Check Be alert to illumination of t...

Page 292: ...e are signs the system may be leaking Have it checked and or repaired at once Refer to Engine Exhaust on page 74 and Running the Engine While Parked on page 75 Windshield Wipers and Washers Check Check operation and condition of the wiper blades Check the flow of the washer spray Defroster Check Move the control to the defrost symbol and the fan to HI or the high symbol Then check the airflow from...

Page 293: ...ectors Condition Check Look for broken scratched dirty or damaged glass mirrors lamps or reflectors that could reduce the view or visibility or cause injury Replace clean or repair promptly Door Latches Check Check that doors close latch and lock tightly Check for broken damaged or missing parts that might prevent tight latching Cab Latches Check Check that the cab closes firmly Check for broken d...

Page 294: ...e should be loosened before being flushed Engine Cover Check Check that the cab s engine cover and seal if equipped are not torn or damaged Be sure that the cover is clamped down firmly to the floor At Least Once a Year Key Lock Cylinders Service Lubricate the key lock cylinders with the lubricant specified in Part C Underbody Flushing Service At least every spring use plain water to flush any cor...

Page 295: ... Coolant 50 50 mixture of clean drinkable water and use only DEX COOL Coolant See Engine Coolant on page 196 Usage Fluid Lubricant Hydraulic Brake System Delco Supreme 11 Brake Fluid or equivalent DOT 3 brake fluid Windshield Washer Solvent GM Optikleen Washer Solvent Exhaust Brake Ball Joint Cap Lubricant High Temperature Grease GM Part No U S 1051344 in Canada 903037 or NLGI 3 consistency Power ...

Page 296: ...nada 10953512 Rear Axle Shift Motor Lubricant Refrigerant Oil GM Part No U S 5416939 in Canada 10953496 Usage Fluid Lubricant Propshafts and Splines Wheel bearing lubricant meeting requirements of NLGI 2 Category GC or GC LB GM Part No U S 1051344 in Canada 993037 Cab Door Hinges and Latches Multi Purpose Lubricant Superlube GM Part No U S 12346241 in Canada 10953474 Weatherstrip Conditioning Weat...

Page 297: ...rmed record the date odometer reading and who performed the service and any additional information from Owner Checks and Services on the following record pages Also you should retain all maintenance receipts Date Miles km Or Hours Serviced By Maintenance Record 297 ...

Page 298: ...Date Miles km Or Hours Serviced By Maintenance Record 298 ...

Page 299: ...Date Miles km Or Hours Serviced By Maintenance Record 299 ...

Page 300: ...Date Miles km Or Hours Serviced By Maintenance Record 300 ...

Page 301: ...y Reimbursement Program 305 Roadside Assistance Program 306 Collision Damage Repair 306 Reporting Safety Defects 311 Reporting Safety Defects to the United States Government 311 Reporting Safety Defects to the Canadian Government 311 Reporting Safety Defects to General Motors 312 Service Publications Ordering Information 312 Section 7 Customer Assistance Information 301 ...

Page 302: ...tacting a member of dealership management it appears your concern cannot be resolved by the dealership without further help contact the GM Medium Duty Truck Customer Assistance Center at 1 800 862 4389 In Canada contact GM of Canada Customer Communication Centre in Oshawa by calling 1 800 263 3777 English or 1 800 263 7854 French We encourage you to call the toll free number in order to give your ...

Page 303: ...le Limited Warranty Although you may be required to resort to this informal dispute resolution program prior to filing a court action use of the program is free of charge and your case will generally be heard within 40 days If you do not agree with the decision given in your case you may reject it and proceed with any other venue for relief available to you You may contact the BBB Auto Line Progra...

Page 304: ... or e mail refer to the addresses below United States Customer Assistance GM Medium Duty Truck Customer Assistance Center P O Box 44947 Detroit MI 48244 www Chevrolet com 1 800 TO CHEVY 862 4389 1 800 833 2438 For Text Telephone devices TTYs Fax Number 313 381 0022 From Puerto Rico 1 800 496 9992 English 1 800 496 9993 Spanish Fax Number 313 381 0022 From U S Virgin Islands 1 800 496 9994 Fax Numb...

Page 305: ...ogram This program available to qualified applicants can reimburse you up to 1 000 of the cost of eligible aftermarket adaptive equipment required for your vehicle such as hand controls or a wheelchair scooter lift The offer is available for a very limited period of time from the date of vehicle purchase lease For more details or to determine your vehicle s eligibility visit gmmobility com or call...

Page 306: ...days a week 365 days a year Should you have any questions about Roadside Assistance call the GM Medium Duty Truck Roadside Assistance Center or contact your dealer Canadian Roadside Assistance In Canada Medium Duty trucks are not eligible for Roadside Assistance services However owners operators who contact Roadside Assistance by calling 1 800 268 6800 may have a tow arranged for them at the owner...

Page 307: ...however the history of these parts is not known Such parts are not covered by your GM New Vehicle Limited Warranty and any related failures are not covered by that warranty Aftermarket collision parts are also available These are made by companies other than GM and may not have been tested for your vehicle As a result these parts may fit poorly exhibit premature durability corrosion problems and m...

Page 308: ...Equipment Manufacturer OEM parts or Genuine Manufacturer replacement parts Read your lease carefully as you may be charged at the end of your lease for poor quality repairs If an Accident Occurs Here is what to do if you are involved in an accident Try to relax and then check to make sure you are all right If you are uninjured make sure that no one else in your vehicle or the other vehicle is inju...

Page 309: ... your insurance company from the scene of the accident They will walk you through the information they will need If they ask for a police report phone or go to the police department headquarters the next day and you can get a copy of the report for a nominal fee In some states provinces with no fault insurance laws a report may not be necessary This is especially true if there are no injuries and ...

Page 310: ... you must live with the repair Depending on your policy limits your insurance company may initially value the repair using aftermarket parts Discuss this with your repair professional and insist on Genuine GM parts Remember if your vehicle is leased you may be obligated to have the vehicle repaired with Genuine GM parts even if your insurance coverage does not pay the full cost If another party s ...

Page 311: ...n individual problems between you your dealer or General Motors To contact NHTSA you may call the Vehicle Safety Hotline toll free at 1 888 327 4236 TTY 1 800 424 9153 go to http www safercar gov or write to Administrator NHTSA 400 Seventh Street SW Washington D C 20590 You can also obtain other information about motor vehicle safety from http www safercar gov Reporting Safety Defects to the Canad...

Page 312: ...uals Service Manuals have the diagnosis and repair information on engines transmission axle suspension brakes electrical steering body etc Transmission Transaxle Transfer Case Unit Repair Manual This manual provides information on unit repair service procedures adjustments and specifications for GM transmissions transaxles and transfer cases Service Bulletins Service Bulletins give technical servi...

Page 313: ...tins and Manuals are available for current and past model GM vehicles To request an order form please specify year and model name of the vehicle ORDER TOLL FREE 1 800 551 4123 Monday Friday 8 00 AM 6 00 PM Eastern Time For Credit Card Orders Only VISA MasterCard Discover visit Helm Inc on the World Wide Web at www helminc com Or you can write to Helm Incorporated P O Box 07130 Detroit MI 48207 Pri...

Page 314: ... NOTES 314 ...

Page 315: ...e of Your Vehicle 243 Fabric Carpet 245 Finish Care 247 Finish Damage 249 Instrument Panel Vinyl and Other Plastic Surfaces 246 Appearance Care cont Sheet Metal Damage 249 Tires 249 Underbody Maintenance 250 Vehicle Care Appearance Materials 251 Washing Your Vehicle 246 Weatherstrips 246 Windshield and Wiper Blades 248 Ashtray s 97 Audio System s 119 AM FM Radio 121 Care of Your Cassette Tape Play...

Page 316: ... the Cab 222 California Proposition 65 Warning 173 Capacities and Specifications 260 Carbon Monoxide 74 156 Care of Safety Belts 246 Your Cassette Tape Player 127 Center Console Storage Area 79 Center Passenger Position Safety Belts 28 Center Seat 13 Charging System Light 105 Check Engine Light 111 Gages Warning Light 116 Chemical Paint Spotting 250 Child Restraints Child Restraint Systems 37 Infa...

Page 317: ...ation Customer Assistance for Text Telephone TTY Users 304 Customer Assistance Offices 304 Customer Assistance Information cont Customer Satisfaction Procedure 302 GM Mobility Reimbursement Program 305 Reporting Safety Defects to General Motors 312 Reporting Safety Defects to the Canadian Government 311 Reporting Safety Defects to the United States Government 311 Roadside Assistance Program 306 Se...

Page 318: ...2 Instrument Panel Fuse Block 254 Electrical System cont Maxi Fuse Block 257 Power Windows and Other Power Options 253 Relay Center 258 Windshield Wiper Fuses 253 Engine Air Cleaner Filter 192 Alarm and Automatic Shutdown 55 Battery 214 Change Engine Oil Light 113 Check and Service Engine Soon Light 111 Checks Before Operating 58 Coolant 196 Coolant Heater 59 Coolant Temperature Gage 110 Diesel En...

Page 319: ...ont Wheel Bearings with Oil Filled Hubs 232 Fuel Diesel Engine Fuel 176 Filling a Portable Fuel Container 186 Filling Your Tank 185 Fuel cont Filter 231 Gage 117 Primary Filter and Water Separator 231 Running Out of Fuel 184 Very Cold Weather Operation 178 Water in Fuel 179 Water in Warning Light 117 What Fuel to Use 176 Fuses Fuses and Circuit Breakers 253 Instrument Panel Fuse Block 254 Maxi Fus...

Page 320: ...Highbeam On Light 115 Highway Hypnosis 153 Hill and Mountain Roads 154 Horn 86 Hourmeter Gage 118 How to Use This Manual 4 How to Wear Safety Belts Properly 18 Hydraulic Brake Systems 135 Hydraulic Clutch 195 I Ignition Positions 52 Infants and Young Children Restraints 33 Inflation Tire Pressure 234 Instrument Panel Overview 84 Instrument Panel I P Brightness 96 Cluster 102 J Jacks Auxiliary Powe...

Page 321: ... Power 115 Safety Belt Reminder 104 Safety Belt Reminder Tone 104 Service Transmission Warning 106 Trailer Anti Lock Brake System Warning 109 Wait to Start Indicator 111 Water in Fuel Warning 117 Loading Your Vehicle 162 Locks Door 47 Loss of Control 145 Low Coolant Warning Light 110 Lumbar Manual Controls 9 M Maintenance Normal Replacement Parts 262 Maintenance Schedule At Each Fuel Fill 289 At L...

Page 322: ...Manual Mirrors 76 N New Vehicle Break In 51 Noise Control System Tampering 228 Normal Maintenance Replacement Parts 262 O Odometer 103 Odometer Trip 103 Off Road Recovery 143 Oil Change Engine Oil Light 113 Engine 187 Low Oil Level Light 113 Pressure Gage 112 Oil Engine Oil Life System 190 Older Children Restraints 30 Other Service Items Front Wheel Bearings with Oil Filled Hubs 232 Fuel Filter 23...

Page 323: ... Off PTO 66 Q Questions and Answers About Safety Belts 17 R Radios 119 AM FM Radio 121 Care of Your Cassette Tape Player 127 Radio with Cassette 124 Setting the Time 120 Understanding Reception 126 Range Inhibit Warning Indicator 106 Rear Axle 220 Differential Lock Control 139 Shift Motor 221 Two Speed Electric Shift Control 62 Rear Reading Lamps 96 Reclining Seatbacks 10 Reduced Engine Power Ligh...

Page 324: ...er 26 Safety Warnings and Symbols 4 Scheduled Maintenance 269 Scheduled Maintenance Supplements 269 Seats Air Suspension Seats 12 Center Seat 13 Manual 8 Manual Lumbar 9 Reclining Seatbacks 10 Securing a Child Restraint Medium Duty Vehicle 42 Service 173 California Proposition 65 Warning 173 Doing Your Own Work 174 Engine Fan Breakage 175 Engine Soon Light 111 Publications Ordering Information 312...

Page 325: ...236 Wheel Loading 235 Wheel Replacement 240 When It Is Time for New Tires 236 Tow Hooks 161 Towing Your Vehicle 164 Traction Control System TCS 139 Trailer Connections 170 Trailer Brake Hand Control Valve 138 Transmission Fluid Automatic 194 Fluid Manual 194 Service Warning Light 106 Transmission Operation Automatic 63 Transmission Operation Manual 64 Trip Odometer 103 Turn and Lane Change Signals...

Page 326: ...afety and Symbols 4 Vehicle Damage 5 Water Fuel 179 Water in Fuel Warning Light 117 What Fuel to Use 176 Wheels Alignment and Tire Balance 236 Front Bearings with Oil Filled Hubs 232 Loading 235 Replacement 240 Tightening the Wheel Nuts 237 Windows 48 Manual 49 Passenger Side Door Glass 50 Power 49 Windshield Washer 90 Washer Fluid 207 Wiper Blade Replacement 229 Wiper Blades Cleaning 248 Wiper Fu...

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