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GMC T-Series 1999, Owner'S Manual, Page: 149 / 344

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GMC T-Series 1999 Owner'S Manual Download Page 149

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Section 5

Problems on the Road

Here you’ll find what to do about some problems that can occur on the road.

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Hazard Warning Flashers

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Other Warning Devices

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Jump Starting

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Towing Your Vehicle

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Engine Overheating

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Cooling System (Gasoline Engine)

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Cooling System (Diesel Engine)

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Engine Fan Noise

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If a Tire Goes Flat

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Changing a Flat Tire

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If You’re Stuck: In Sand, Mud, Ice or Snow

Summary of Contents for T-Series 1999

Page 1: ...1 Problems on the Road This section tells you what to do if you have a problem while driving such as a flat tire or overheated engine etc 6 1 Service and Appearance Care Here the manual tells you how...

Page 2: ...er it appears in this manual Please keep this manual in your vehicle so it will be there if you ever need it when you re on the road If you sell the vehicle please leave this manual in it so the new o...

Page 3: ...he manual and the page number where you ll find it Safety Warnings and Symbols You will find a number of safety cautions in this book We use a box and the word CAUTION to tell you about things that co...

Page 4: ...something that can damage your vehicle Many times this damage would not be covered by your warranty and it could be costly But the notice will tell you what to do to help avoid the damage When you rea...

Page 5: ...ymbols have to do with your lamps MASTER LIGHTING SWITCH TURN SIGNALS PARKING LAMPS HAZARD WARNING FLASHER DAYTIME RUNNING LAMPS FOG LAMPS These symbols are on some of your controls WINDSHIELD WIPER W...

Page 6: ...dels delivered from the factory are finished in a variety of ways by a number of companies you ll probably find other manuals in your finished vehicle These manuals are put there by the companies that...

Page 7: ...ols 1 4 Safety Belts They re for Everyone 1 8 Here are Questions Many People Ask About Safety Belts and the Answers 1 9 How to Wear Safety Belts Properly 1 9 Driver Position 1 15 Safety Belt Use Durin...

Page 8: ...h your body to make sure the seat is locked into place To adjust the lower seat cushion forward or backward pull up on lever B and slide the cushion to where you want it Then release the lever To tilt...

Page 9: ...f the restraint is closest to the top of your ears This position reduces the chance of a neck injury in a crash Center Seat If Equipped Your vehicle may be equipped with a center seat To fold the seat...

Page 10: ...d or killed In the same crash you might not be if you are buckled up Always fasten your safety belt and check that your passengers belts are fastened properly too CAUTION It is extremely dangerous to...

Page 11: ...t survive But most crashes are in between In many of them people who buckle up can survive and sometimes walk away Without belts they could have been badly hurt or killed After more than 30 years of s...

Page 12: ...yellowblue 1 6 If the vehicle hits something it stops right then But nothing stops the people They keep moving Then something will stop them It could be the windshield...

Page 13: ...r passengers were to give that big vehicle a chance to deal with the force of the impact instead of you With belts you slow down as the vehicle does You get more time to stop You stop over more distan...

Page 14: ...so they work with safety belts not instead of them Every air bag system ever offered for sale has required the use of safety belts Even if you re in a vehicle that has air bags you still have to buckl...

Page 15: ...r Position This part describes the driver s restraint system Lap Shoulder Belt The driver has a lap shoulder belt Here s how to wear it properly 1 Close and lock the door 2 Adjust the seat to see how...

Page 16: ...elt as you pull up on the shoulder belt The lap part of the belt should be worn low and snug on the hips just touching the thighs In a crash this applies force to the strong pelvic bones And you d be...

Page 17: ...belt is too loose It won t 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...

Page 18: ...ION You 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 coul...

Page 19: ...u can be 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 appl...

Page 20: ...is twisted across the body CAUTION You can be seriously injured by a twisted belt In a crash you wouldn t have the full width of the belt to spread impact forces If a belt is twisted make it straight...

Page 21: ...oor on it you can damage both the belt and your vehicle Safety Belt Use During Pregnancy Safety belts work for everyone including pregnant women Like all occupants they are more likely to be seriously...

Page 22: ...g them properly Right Passenger Position The right passenger s safety belt works the same way as the driver s safety belt See Driver Position earlier in this section Center Passenger Position If Equip...

Page 23: ...n the buckle is positioned so you would be able to unbuckle the safety belt quickly if you ever had to Children Everyone in a vehicle needs protection That includes infants and all children smaller th...

Page 24: ...the rest of its body In a frontal crash an infant in a rear facing restraint settles into the restraint so the crash forces can be distributed across the strongest part of the infant s body the back...

Page 25: ...t weigh much until a crash During a crash a baby will become so heavy you can t 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...

Page 26: ...riate restraints Q What are the different types of add on child restraints A Add on child restraints are available in four basic types When selecting a child restraint take into consideration not only...

Page 27: ...d the center of the vehicle A rear facing infant restraint B positions an infant to face the rear of the vehicle Rear facing infant restraints are designed for infants of up to about 20 lbs 9 kg and a...

Page 28: ...yellowblue 1 22...

Page 29: ...hese forward facing restraints are designed to help protect children who are from 20 to 40 lbs 9 to 18 kg and about 26 to 40 inches 66 to 102 cm in height or up to around four years of age One type a...

Page 30: ...estraints use the belt system in your vehicle but the child also has to be secured within the restraint to help reduce the chance of personal injury The instructions that come with the infant or child...

Page 31: ...the child in the child restraint when and as the instructions say But don t use this position if the child restraint interferes with shifting gears See the earlier part about the top strap if the chi...

Page 32: ...push down on the child restraint If you re using a forward facing child restraint you may find it helpful to use your knee to push down on the child restraint as you tighten the belt 6 Push and pull...

Page 33: ...safety belts If you have the choice a child should sit next to a window so the child can wear a lap shoulder belt and get the additional restraint a shoulder belt can provide D Children who aren t buc...

Page 34: ...oulder 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...

Page 35: ...belt in 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...

Page 36: ...tes retractors and anchorages are working properly Look for any other loose or damaged safety belt system parts If you see anything that might keep a safety belt system from doing its job have it repa...

Page 37: ...19 Diesel Engine Exhaust Brake 2 21 Two Speed Rear Axle Electric Shift Control If Equipped 2 23 Automatic Transmission Operation 2 24 Manual Transmission Operation 2 25 Parking 2 31 Parking Over Thing...

Page 38: ...ildren in a vehicle with the ignition key is dangerous for many reasons A child or others could be badly injured or even killed They could operate the controls or even make the vehicle move Don t leav...

Page 39: ...inside You may even have to damage your vehicle to get in So be sure you have extra keys Door Locks CAUTION Unlocked doors can be dangerous Passengers especially children can easily open the doors and...

Page 40: ...r Theft Vehicle theft is big business especially in some cities and even commercial vehicles are no exception Although your vehicle has a number of theft deterrent features we know that nothing we put...

Page 41: ...ICE Continued D Avoid making hard stops for the first 200 miles 322 km or so During this time your new brake linings aren t yet broken in Hard stops with new linings can mean premature wear and earlie...

Page 42: ...ts you insert and remove the ignition key ACC Accessory This position lets you use accessories when the engine is off ON This is the position for driving START This position starts your engine Engine...

Page 43: ...eature Manual Transmission Set the parking brake shift your gear selector to NEUTRAL and hold the clutch pedal to the floor while starting the engine Starter Motor Operation 1 The starter motor will d...

Page 44: ...ne starts let go of the key and the accelerator pedal NOTICE Your engine is designed to work with the electronics in your vehicle If you add electrical parts or accessories you could change the way th...

Page 45: ...tch and transmission the vehicle may move slightly when you do this While your engine is idling before you turn it off you can make a list of any operational or handling concerns to give to responsibl...

Page 46: ...ee the part of this manual that tells how to do it without damaging your vehicle See Towing Your Vehicle in the Index Restarting the Diesel Engine While Moving Automatic Transmission If you have to re...

Page 47: ...low engine coolant the five beat per second alarm and the LOW COOLANT warning light will come on The five beats per second tone alarm means that your diesel engine will shut down in 25 seconds Pull o...

Page 48: ...rake hand lever if equipped is applied D The manual transmission if equipped clutch pedal is pressed or the automatic transmission if equipped is shifted from NEUTRAL N or PARK P D The vehicle speed e...

Page 49: ...will be remembered by the system until either the ignition is turned to OFF or a new idle speed is set The engine idle speed will return to the normal level or the automatically set idle speed if the...

Page 50: ...e malfunction Pumping the accelerator pedal will in no way assist in starting the engine 6 Release the key the instant the engine starts 7 After the engine starts check to make sure the transmission i...

Page 51: ...re below 32_F 0_C will cause oil pressure to rise more slowly 2 Observe the engine coolant temperature gage If the gage reaches the hot area stop the engine and determine the cause of overheating 3 If...

Page 52: ...luid level in the reservoir is lower than the specified level This condition must be corrected before moving the vehicle Press the brake pedal fully and observe the brake warning light If the warning...

Page 53: ...ill hear a tone alarm If the pressure doesn t build up or drops during warm up stop the engine and find the cause before you try to move the vehicle Recommended air pressure before actually driving aw...

Page 54: ...ter fuel economy during engine warm up Usually the coolant heater should be plugged in a minimum of four hours prior to starting your vehicle To Use the Engine Coolant Heater 1 Turn off the engine 2 F...

Page 55: ...store the cord before starting the engine See Diesel Fuel Requirements and Fuel System in the Index for information on what fuel to use in cold weather Diesel Engine Exhaust Brake The exhaust brake i...

Page 56: ...e exhaust brake is not engaged due to the position of the accelerator or clutch pedal Do not use the exhaust brake when running the engine at idle during warm up or other extended periods Prolonged us...

Page 57: ...right of the comfort controls When the switch is up the rear axle is in the high range Push it down to get the low range The two speed axle should be in low range when you park the vehicle Apply the...

Page 58: ...high range disengage the clutch pause engage the clutch and then press down on the accelerator When you shift the axle down from high to low you don t have to clutch Just move the switch down to low...

Page 59: ...driver you will see a label that describes important operating facts about the automatic transmission in your vehicle Make sure you follow the instructions on this label CAUTION It can be dangerous to...

Page 60: ...peed drop of about 100 rpm At this point the clutch is engaging so you should increase the engine speed and fully engage the clutch It s important not to increase the engine speed sooner or before the...

Page 61: ...our shift If the engagement isn t smooth when you engage the clutch press the clutch pedal in and then immediately reengage it Use the clutch brake only with the engine idling and the vehicle standing...

Page 62: ...lied Propshaft Brake Burnish Procedure It is recommended that the transmission mounted parking brake be burnished as part of the new vehicle break in The parking brake will work best after it has been...

Page 63: ...ng brake is not fully released NOTICE Driving with the parking brake on can overheat the parts in the system You may have to replace them and you could also damage other parts of your vehicle See Prop...

Page 64: ...he PARK BRAKE light may flash while the parking brake is being applied or released This is normal for this system If your vehicle needs towing and the parking brake will not release the towing operato...

Page 65: ...or towing vehicles may also have these controls They look like this To charge a trailer s air brake system D Move your tractor into the proper position Apply the parking brake by pulling the SYSTEM P...

Page 66: ...p suddenly If you are not ready for this you or others could be injured Don t apply any one of these controls while you re driving unless you have to make an emergency stop If the air pressure drops b...

Page 67: ...unconsciousness and death You might have exhaust coming in if D Your exhaust system sounds strange or different D Your vehicle gets rusty underneath D Your vehicle was damaged in a collision D Your ve...

Page 68: ...icle even if the fan switch is at the highest setting One place this can happen is a garage Exhaust with CO can come in easily NEVER park in a garage with the engine running Another closed in place ca...

Page 69: ...side power window operation Your power windows will not move unless the ignition switch has been turned to ON Push the power window switch down part way to lower the windows Pull the switch up part wa...

Page 70: ...Tilt Steering Column A tilt steering column allows you to adjust the steering wheel before you drive You can also raise it to the highest level to give your legs more room when you enter or exit the v...

Page 71: ...e change To signal a turn move the lever all the way up or down When the turn is finished the lever will return automatically An arrow on the instrument cluster will flash in the direction of the turn...

Page 72: ...ur lamps A circuit breaker protects your headlamps If you have an electrical overload your headlamps will flicker on and off Have your headlamp wiring checked right away if this ever happens Headlamps...

Page 73: ...rs turn the knob at the end of the stalk to INT Then turn the INT TIME band to choose the delay time The closer the band is turned to F the shorter the delay will be Heavy snow or ice can overload you...

Page 74: ...ly them all the way if you have to Use this control only when you re driving Don t use it for parking or to hold the rig on a hill CAUTION Using the trailer brake hand control for parking or for holdi...

Page 75: ...on the accelerator before you turn on your inter axle differential lock When you turn on this control the DIFF LOCK indicator on the instrument panel will light NOTICE Activating the inter axle diffe...

Page 76: ...hicle is moving may keep you from stopping quickly in an emergency Use this control only when the vehicle is standing still Exterior Lamps Daytime Running Lamps If Equipped Daytime Running Lamps DRL c...

Page 77: ...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 sys...

Page 78: ...come on only when the driver s door is opened If the switch is set to OFF the dome lamp will not illuminate even when the door is opened The dome lamp will remain on whether or not the door is open i...

Page 79: ...ve one before changing lanes Heated Outside Mirrors If Equipped If your vehicle has heated mirrors you ll find the switch on the instrument panel to the right of the comfort controls Use it to operate...

Page 80: ...iver s and passenger s seats Push the compartment doors all the way up to lock in position Be sure the doors are securely closed before moving the vehicle Center Seat Storage If Equipped A storage com...

Page 81: ...pers and other things that burn into your ashtray If you do cigarettes or other smoking materials could set them on fire causing damage The cigarette lighter is located in the center of the instrument...

Page 82: ...eat These jacks provide 12 volt power so you can operate things such as a citizen s band CB radio or a cellular phone You ll see positive red and negative black outlets They are protected by a 15 amp...

Page 83: ...even wire cable that will go to the trailer to supply electrical power to the trailer s lighting system When not in use it is stored in the trailer air hose storage bracket NOTICE Starting in 1998 the...

Page 84: ...yellowblue 2 48 Instrument Panel...

Page 85: ...B Vent C Instrument Panel Cluster D Warning Lights E Windshield Wiper Washer Controls F Vents G Comfort Controls H Switches I Vents J Glovebox K Cigarette Lighter L Audio System M Air Brake Controls O...

Page 86: ...l Cluster Your instrument cluster is designed to let you know at a glance how your vehicle is running You ll know how fast you re going about how much fuel is left and many other things you ll need to...

Page 87: ...e But if it can t then it s set at zero and a label must be put on the driver s door to show the old mileage reading when the new odometer was installed The trip odometer can be used to record mileage...

Page 88: ...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 re working If you are familiar with this section you should...

Page 89: ...charging system light is located in the center of the instrument cluster just above the odometer It should come on briefly when you turn on the ignition before the engine is running as a check to show...

Page 90: ...ng the transmission shift control will result in the loss of forward gears The computer for the transmission senses a problem and chooses a gear to stay in so that you can drive the vehicle in that ge...

Page 91: ...the AUX BRAKE warning light comes on it means that there is something wrong in the auxiliary brake system When this light comes on you will also hear a warning tone Both of these lights should come on...

Page 92: ...sure has dropped below 60 to 70 psi 410 to 480 kPa When this warning light comes on you will also hear a warning tone If the warning light and tone come on while you are driving you should drive only...

Page 93: ...there is a malfunction in the electric hydraulic parking brake system When the SERVICE PARK BRAKE light comes on you will also hear a warning tone If this light comes on have the system repaired immed...

Page 94: ...ce If the PRIMARY BRAKE light isn t on you still have brakes but you don t have the anti lock brake feature If the PRIMARY BRAKE light is on you don t have anti lock brakes and there s a problem with...

Page 95: ...erheated and your engine may be too hot You should pull off the road stop your vehicle and turn off the engine as soon as possible This gage reading will vary with air temperature and operating condit...

Page 96: ...ee Engine Coolant in the Index and have your vehicle serviced as soon as you can This light may also come on if your vehicle is equipped with the optional automatic engine shutdown system and engine s...

Page 97: ...light to cycle on and off as the heater cycles during engine warm up See Engine Starting in your CaterpillarR Operation Maintenance Manual for more information Diff Lock Indicator Light If Equipped Th...

Page 98: ...en the ignition is on but the engine is not running as a check to show you it is working If it does not come on at all have it repaired NOTICE If you keep driving your vehicle with this light on after...

Page 99: ...l as soon as possible and have your vehicle serviced NOTICE Damage to your engine from neglected oil problems can be costly and is not covered by your warranty Change Oil Light If Equipped The CHANGE...

Page 100: ...See Daytime Running Lamps in the Index Check Gages Indicator Light If Equipped 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 driv...

Page 101: ...e is the average of the two tanks Here are four concerns of some operators None of these shows a problem with your fuel gage D The gage moves a little when you turn a corner or speed up D The gage doe...

Page 102: ...nter shows the pressure available for the front system while the bottom pointer shows pressure for the rear There should be no more than 4 psi 28 kPa difference showing between the systems Don t drive...

Page 103: ...ort Controls 3 2 Heating Air Conditioning Controls 3 3 Heating 3 3 Air Conditioning If Equipped 3 3 Defrosting 3 4 Ventilation System 3 5 Audio Systems 3 5 Setting the Clock for AM FM Stereo 3 5 Setti...

Page 104: ...d area and near the floor DEFROST This setting operates the defroster Air comes out near the bottom of the windshield and at your front side windows RECIRC If you press this button the air inside the...

Page 105: ...ngine coolant temperature and cab heat when idling cannot be avoided Using RECIRC while in a heating mode is not recommended while driving because interior window fogging can result Air Conditioning I...

Page 106: ...w moments before driving off This helps clear the intake ducts of snow and moisture and reduces the chance of fogging the inside of your windows D Keep the air path under the front seats clear of obje...

Page 107: ...time See Using the Alarm later in this section With each press of the up tuning button the hours move from 1 to 12 With each press of the down tuning button the minutes move from 00 to 59 Setting the...

Page 108: ...Preset scan lets you scan through your favorite stations on your pushbutton in order from one to six If the station you are currently listening to is a preset station preset scan scans from the next...

Page 109: ...of the button the time increases When the timer expires an alarm will sound for two minutes When the timer is set back to 0 00 the timer symbol will disappear from the display Using the Alarm ALARM T...

Page 110: ...Clock for the AM FM Stereo in the Index When the set time comes the radio will be switched on and will remain on for one hour The wake up feature is activated only once and the alarm set status will b...

Page 111: ...utton is pressed during the five seconds that a station is being reviewed PUSHBUTTONS The five numbered preset buttons let you return to your favorite stations You can set up to 10 stations five AM an...

Page 112: ...e alarm button for one and a half seconds or more Playing a Cassette Tape Your tape player is built to work best with tapes that are 30 to 45 minutes long on each side Tapes longer than that are so th...

Page 113: ...ms normal can be loud and harmful to your hearing Take precautions by adjusting the volume control on your radio to a safe sound level before your hearing adapts to it To help avoid hearing loss or da...

Page 114: ...rasive cleaning cassette it is normal for the cassette to eject because your unit is equipped with a cut tape detection feature and a cleaning cassette may appear as a broken tape If the cleaning cass...

Page 115: ...yellowblue 3 13 NOTES...

Page 116: ...yellowblue 3 14 NOTES...

Page 117: ...ips on driving 4 2 Defensive Driving 4 3 Drunken Driving 4 6 Control of a Vehicle 4 6 Braking 4 10 Steering 4 12 Off Road Recovery 4 13 Passing 4 14 Loss of Control 4 15 Driving at Night 4 17 Driving...

Page 118: ...st preventable of accidents Yet they are common Allow enough following distance It s the best defensive driving maneuver in both city and rural driving You never know when the vehicle in front of you...

Page 119: ...rink alcohol There are good medical psychological and developmental reasons for these laws The obvious way to solve the leading highway safety problem is for people never to drink alcohol and then dri...

Page 120: ...n some other countries it s even lower The BAC limit for all commercial drivers in the United States is 0 04 percent The BAC will be over 0 10 percent after three to six drinks in one hour Of course a...

Page 121: ...cohol in a person s system can make crash injuries worse especially injuries to the brain spinal cord or heart This means that when anyone who has been drinking driver or passenger is in a crash that...

Page 122: ...bring up your foot and do it That s reaction time Average reaction time is about 3 4 of a second But that s only an average It might be less with one driver and as long as two or three seconds or more...

Page 123: ...e power 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...

Page 124: ...hear a momentary motor or clicking noise while this test is going on This is normal If there s a problem with the anti lock brake system the anti lock brake system warning light will stay on See Anti...

Page 125: ...gly Remember Anti lock doesn t change the time you need to get your foot up to the brake pedal or always decrease stopping distance If you get too close to the vehicle in front of you you won t have t...

Page 126: ...ease off the brake pedal This will help you retain steering control If you do have anti lock it s different see Anti Lock Brakes in the Index In many emergencies steering can help you more than even...

Page 127: ...you ll want to go slower If you need to reduce your speed as you approach a curve do it before you enter the curve while your front wheels are straight ahead This is especially important with a tract...

Page 128: ...h emergency situations are always possible is a good 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...

Page 129: ...r a better time D 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 center line usually indicate...

Page 130: ...r the following driver to get ahead of you Perhaps you can ease a little to the right Loss of Control Let s review what driving experts say about what happens when the three control systems brakes ste...

Page 131: ...to slide You may not realize the surface is slippery until your vehicle is skidding Learn to recognize warning clues such as enough water ice or packed snow on the road to make a mirrored surface and...

Page 132: ...om headlamps but they also make a lot of things invisible You can be temporarily blinded by approaching headlamps It can take a second or two or even several seconds for your eyes to readjust to the d...

Page 133: ...ay get wet suddenly when your reflexes are tuned for driving on dry pavement The heavier the rain the harder it is to see Even if your windshield wiper blades are in good shape a heavy rain can make i...

Page 134: ...es Try to avoid puddles But if you can t try to slow down before you hit them CAUTION Wet brakes can cause accidents They won t work as well in a quick stop and may cause pulling to one side You could...

Page 135: ...about hydroplaning The best advice is to slow down when it is raining Driving Through Deep Standing Water NOTICE If you drive too quickly through deep puddles or standing water water can come in throu...

Page 136: ...country trip D Larger vehicles can t 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...

Page 137: ...lly a ramp that leads to the freeway If you have a clear view of the freeway as you drive along the entrance ramp you should begin to check traffic Try to determine where you expect to blend with the...

Page 138: ...t plain falling asleep at the wheel Call it highway hypnosis lack of awareness or whatever When you drive the vehicle for a long distance there is something about an easy stretch of road with the same...

Page 139: ...ng system and transmission These parts can work hard on mountain roads D Know how to go down hills The most important thing to know is this let your engine do some of the slowing down Shift to a lower...

Page 140: ...n your own lane when driving on two lane roads in hills or mountains Don t swing wide or cut across the center of the road Drive at speeds that let you stay in your own lane D As you go over the top o...

Page 141: ...g on Snow or Ice Most of the time those places where your tires meet the road probably have good traction However if there is snow or ice between your tires and the road you can have a very slippery s...

Page 142: ...to slide let up on the brakes a little Push the brake pedal down steadily to get the most traction you can Remember unless you have anti lock if you brake so hard that your wheels stop rolling you ll...

Page 143: ...to summon help and keep yourself and your passengers safe D Turn on your hazard flashers D Tie a red cloth to your mirror arm to alert police that you ve been stopped by the snow D Put on extra clothi...

Page 144: ...make it go a little faster than just idle That is push the accelerator slightly This uses less fuel for the heat that you get and it keeps the battery or batteries charged You will need a well charge...

Page 145: ...or the front and rear axles called Gross Axle Weight Rating GAWR To find out the actual loads on your front and rear axles you need to go to a weigh station and weigh your vehicle Your dealer can help...

Page 146: ...s fast as the vehicle goes If you have to stop or turn quickly or if there is a crash they ll keep going CAUTION Things you put inside your vehicle can strike and injure people in a sudden stop or tur...

Page 147: ...pressed and released once before PTO can be enabled Do not hold the brake and clutch pedal down 4 Move the PTO switch to ON This sets the PTO base idle at 1200 rpm 5 Use the PTO rocker switch to chan...

Page 148: ...yellowblue 4 32 NOTES...

Page 149: ...he road 5 2 Hazard Warning Flashers 5 3 Other Warning Devices 5 3 Jump Starting 5 8 Towing Your Vehicle 5 14 Engine Overheating 5 16 Cooling System Gasoline Engine 5 24 Cooling System Diesel Engine 5...

Page 150: ...urn signal lamps will flash on and off Move the lever up on the right side of the steering column to start the hazard flashers Move the lever down again to turn the flashers off Your hazard warning fl...

Page 151: ...ting If your battery or batteries has run down you may want to use another vehicle and some jumper cables to start your vehicle But please follow the steps below to do it safely CAUTION Batteries can...

Page 152: ...12 volt battery with a negative ground system NOTICE If the other system isn t a 12 volt system with a negative ground both vehicles can be damaged If you have a diesel engine vehicle with two batteri...

Page 153: ...nals on each battery CAUTION Using a match near a battery can cause battery gas to explode People have been hurt doing this and some have been blinded Use a flashlight if you need more light Be sure t...

Page 154: ...etal engine part or some other well grounded part Don t connect positive to negative or you ll get a short that would damage the battery and maybe other parts too CAUTION Fans or other moving engine p...

Page 155: ...18 inches 45 cm away from the dead battery but not near engine parts that move The electrical connection is just as good there but the chance of sparks getting back to the battery is much less 10 Now...

Page 156: ...warning flashers if they have not been damaged When you call tell the towing service D The make model and year of your vehicle D Whether you can still move the shift lever D An estimation of the tota...

Page 157: ...towing a vehicle 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...

Page 158: ...from the forward axle Secure the propshaft to the frame or crossmember after disconnecting it After Towing Block the rear wheels and install axle and propeller shafts Check for proper phasing of univ...

Page 159: ...wing vehicle Check and fill rear axle with oil as required Towing Your Vehicle From the Rear Rear Wheels Off the Ground Before Towing Secure the steering wheel to maintain straight ahead position Make...

Page 160: ...studs to compress the brake springs D When the brake springs are manually compressed you will have no brakes Release your air operated parking brakes manually only to tow the vehicle Never drive the v...

Page 161: ...clockwise several turns to release the brakes Follow the same procedure to release the other brake 7 At the repair facility apply air pressure of at least 70 psi 480 kPa to the brake chambers either f...

Page 162: ...e engine if you see or hear steam coming from it Just turn it off and get everyone away from the vehicle until it cools down Wait until there is no sign of steam or coolant before you tilt the cab If...

Page 163: ...c jam shift to NEUTRAL N otherwise shift to the highest gear while driving DRIVE D for automatic transmissions 4 If climbing a hill downshift to raise engine and fan speeds If you no longer have the o...

Page 164: ...the cab you ll see the coolant recovery tank If the coolant inside the coolant recovery tank is boiling don t do anything else until it cools down The coolant level should be at COLD FULL If it isn t...

Page 165: ...g coolant it is important that you use only DEX COOLR silicate free coolant If coolant other than DEX COOL is added to the system premature engine heater core or radiator corrosion may result In addit...

Page 166: ...Plain water or some other liquid like alcohol can boil before the proper coolant mixture will Your vehicle s coolant warning system is set for the proper coolant mixture With plain water or the wrong...

Page 167: ...oolant on hot engine parts Coolant contains ethylene glycol and it will burn if the engine parts are hot enough Don t spill coolant on a hot engine If the overheat warning continues there s one more t...

Page 168: ...dly They are under pressure and if you turn the radiator pressure cap even a little they can come out at high speed Never turn the cap when the cooling system including the radiator pressure cap is ho...

Page 169: ...ure cap and upper radiator hose is no longer hot Turn the pressure cap slowly counterclockwise until it first stops Don t press down while turning the pressure cap If you hear a hiss wait for that to...

Page 170: ...olant mixture up to the base of the filler neck See Engine Coolant in the Index for more information about the proper coolant mixture 4 Then fill the coolant recovery tank to COLD FULL 5 Put the cap b...

Page 171: ...he radiator filler neck may be lower If the level is lower add more of the proper DEX COOLR coolant mixture through the filler neck until the level reaches the base of the filler neck 8 Then replace t...

Page 172: ...should be at COLD FULL or higher If it isn t you may have a leak in the radiator hoses heater hoses radiator water pump or somewhere else in the cooling system CAUTION Heater and radiator hoses and o...

Page 173: ...n If it doesn t your vehicle needs service Turn off the engine How to Add Coolant to the Coolant Surge Tank If you haven t found a problem yet but the coolant level isn t at COLD FULL add a 50 50 mixt...

Page 174: ...der pressure and if you turn the coolant surge tank pressure cap even a little they can come out at high speed Never turn the cap when the cooling system including the coolant surge tank pressure cap...

Page 175: ...ngine could get too hot but you wouldn t get the overheat warning Your engine could catch fire and you or others could be burned Use a 50 50 mixture of clean drinkable water and coolant NOTICE In cold...

Page 176: ...cap and upper radiator hose is no longer hot Turn the pressure cap slowly counterclockwise until it first stops Don t press down while turning the pressure cap If you hear a hiss wait for that to sto...

Page 177: ...run until you can feel the upper radiator hose getting hot Watch out for the engine fan By this time the coolant level inside the coolant surge tank may be lower If the level is lower add more of the...

Page 178: ...isengages If a Tire Goes Flat It s unusual for a tire to blow out while you re driving especially if you maintain your tires properly If air goes out of a tire it s much more likely to leak out slowly...

Page 179: ...and look at the wheel See if it looks like another wheel on the vehicle If so go on to the next step If it doesn t or even if you can t be sure stop and get expert help CAUTION Tire rim assemblies ca...

Page 180: ...de ring might not be properly seated CAUTION Rust or dirt on the wheel or on the parts to which it is fastened can make the wheel nuts become loose after a time The wheel could come off and cause an a...

Page 181: ...If you do the nuts might come loose Your wheel could fall off causing a serious accident CAUTION D There are many ways to be hurt badly or be killed while you are trying to change a truck tire and ri...

Page 182: ...original equipment wheel nuts Stop somewhere as soon as you can and have the nuts tightened with a torque wrench See Tightening the Wheel Nuts in the Index for the proper torque for your particular w...

Page 183: ...u can destroy your transmission Rocking Your Vehicle To Get It Out First turn your steering wheel left and right That will clear the area around your front wheels Then shift back and forth between REV...

Page 184: ...yellowblue 5 36 NOTES...

Page 185: ...yellowblue 5 37 NOTES...

Page 186: ...yellowblue 5 38 NOTES...

Page 187: ...Engine Oil CaterpillarR Diesel Engines 6 25 Engine Air Cleaner Filter 6 27 Air Conditioner Filter 6 27 Automatic Transmission Fluid 6 28 Manual Transmission Fluid 6 28 Rear Axle 6 29 Rear Axle Shift...

Page 188: ...Genuine GM parts have one of these marks Doing Your Own Service Work If you want to do some of your own service work you ll want to use the proper service manual It tells you much more about how to s...

Page 189: ...eak or fall off You could be hurt Two Safety Cautions about Engine Fan Breakage CAUTION Changing the Fan Drive Ratio or Engine Governed Speed If you change the fan drive ratio or increase the governed...

Page 190: ...ons which have been developed by the American Automobile Manufacturers Association AAMA and endorsed by the Canadian Motor Vehicle Manufacturers Association for better vehicle performance and engine p...

Page 191: ...should not have to add anything to the fuel In addition gasolines containing oxygenates such as ethers and ethanol and reformulated gasolines may be available in your area to contribute to clean air G...

Page 192: ...for several days or weeks can develop water in the fuel from condensation It helps to fill the fuel tank if the diesel engine vehicle will not be used for a time Fuels in Foreign Countries If you pla...

Page 193: ...vehicle depending on option content To take off the cap turn it slowly to the left counterclockwise CAUTION Gasoline Engine Vehicles If you get gasoline on you and then something ignites it you could...

Page 194: ...ner CAUTION Never fill a portable fuel container while it is in your vehicle Static electricity discharge from the container can ignite the gasoline vapor You can be badly burned and your vehicle dama...

Page 195: ...re all loose articles in the cab and close the cab door 3 Check for adequate clearance in front and above the cab 4 To help prevent the vehicle from moving D Apply the parking brake D Place the automa...

Page 196: ...yellowblue 6 10 3 Move the primary tilt lever all the way down 4 Pull the secondary latch lever to release the hook from the catch at the back of the cab The cab is now free to tilt...

Page 197: ...the cab support under the cab locks fully A Safety Lock Pin B Cab Support CAUTION A cab not properly locked in the tilted position could fall causing serious injury To insure that the cab is securely...

Page 198: ...These include liquids like gasoline or diesel fuel oil brake fluid windshield washer and other fluids and plastic or rubber Be careful not to drop or spill things that will burn onto a hot engine Low...

Page 199: ...e cab support to release the detent 3 Using this handle located at the bottom of the cab toward the back lower the cab until the hook catches and the cab is held down 4 Push the primary tilt lever upw...

Page 200: ...dent or an injury Be sure the tilt cab is properly secured to the chassis before moving the vehicle Lifting the Front Panel To access the windshield washer fluid reservoir and the clutch fluid reservo...

Page 201: ...he following information relates to compliance with Federal noise emission standards for vehicles with a Gross Vehicle Weight Rating GVWR of more than 10 000 lbs 4 536 kg The Maintenance Schedule prov...

Page 202: ...element of design has been removed or rendered inoperative by any person Among those acts presumed to constitute tampering are the acts listed below Insulation D Removal of the noise shields or any un...

Page 203: ...d give the oil several minutes to drain back into the oil pan If you don t the oil dipstick might not show the actual level Checking Engine Oil Pull out the dipstick and clean it with a paper towel or...

Page 204: ...en you re through What Kind of Engine Oil to Use Oils recommended for your vehicle can be identified by looking for the Starburst symbol This symbol indicates that the oil has been certified by the Am...

Page 205: ...e Engines Starburst symbol Failure to use the recommended oil can result in engine damage not covered by your warranty GM GoodwrenchR oil meets all the requirements for your vehicle If you are in an a...

Page 206: ...urn the ignition key to RUN with the engine off Fully press and release the accelerator pedal three times within 10 seconds If the CHANGE OIL light flashes for five seconds the system is reset If the...

Page 207: ...side at the rear of the cab You do not need to tilt the cab to locate the dipstick Turn off the engine and give the oil a few minutes to drain back into the oil pan If you don t the oil dipstick might...

Page 208: ...such as API CG 4 SH CG 4 SJ SH CG 4 or SJ CG 4 These letters show American Petroleum Institute API levels of quality NOTICE If you use oils that don t have one of these designations you can cause eng...

Page 209: ...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 the logo GM Good...

Page 210: ...rain all free flowing oil from the filter before disposal Don t ever dispose of oil by putting it in the trash pouring it on the ground into sewers or into streams or bodies of water Instead recycle i...

Page 211: ...yellowblue 6 25 Engine Air Cleaner Filter Your GM Maintenance Schedule says when to replace the air filter Gasoline Engine Diesel Engine...

Page 212: ...ter off NOTICE Gasoline Engines Only If the air cleaner filter is off a backfire can cause a damaging engine fire And dirt can easily get into your engine which will damage it Always have the air clea...

Page 213: ...off any dust on the filters 3 The filters may also be washed with water and dried completely Automatic Transmission Fluid When to Check A good time to have it checked is when the engine oil is checked...

Page 214: ...ange your transmission fluid and filters How to Check and What to Use The Eaton Fuller Manual Transmission Operator s Manual that came with the vehicle shows how to check the manual transmission fluid...

Page 215: ...e fluid level in the axle shift motor is when the rear axle lubricant is checked Use refrigerant oil shift motor only How to Check Fluid Remove the plug on the front plate of the axle shift motor add...

Page 216: ...at and ACDelcoR thermostat is recommended for gasoline engines CaterpillarR parts are recommended for diesel engines Engine Coolant Gasoline Engine The cooling system in your vehicle is filled with DE...

Page 217: ...e a mixture of one half clean drinkable water and one half DEX COOLR coolant which won t damage aluminum parts If you use this coolant mixture you don t need to add anything else CAUTION Adding only p...

Page 218: ...diator heater core and other parts If you have to add coolant more than four times a year have your dealer check your cooling system NOTICE If you use the proper coolant you don t have to add extra in...

Page 219: ...n a level surface When your engine is cold the coolant level should be at or above COLD FULL level on the coolant recovery tank If this light comes on and stays on it means you re low on engine coolan...

Page 220: ...dd coolant mixture at the recovery tank or the surge tank but be careful not to spill it CAUTION You can be burned if you spill coolant on hot engine parts Coolant contains ethylene glycol and it will...

Page 221: ...d Fluids and Lubricants in the Index NOTICE When adding power steering fluid or making a complete fluid change always use the proper fluid Failure to use the proper fluid can cause leaks and damage ho...

Page 222: ...her symbol on it Add washer fluid until the tank is full NOTICE D When using concentrated washer fluid follow the manufacturer s instructions for adding water D Don t mix water with ready to use washe...

Page 223: ...repaired When to Check and What to Use Refer to the Maintenance Schedule Owner Checks and Services to determine how often you should check the fluid level in your clutch fluid reservoir How to Check T...

Page 224: ...e 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 s low add enough fluid to...

Page 225: ...inted surfaces the paint finish can be damaged Be careful not to spill brake fluid on your vehicle If you do wash it off immediately See Appearance Care in the Index Four Wheel Disc Brakes Hydraulic O...

Page 226: ...ystem Moisture will damage your system if it isn t removed daily There are two ways to do this One is automatic if your air brake vehicle has the optional moisture ejector If your vehicle doesn t have...

Page 227: ...ur dryer is a Bendix Westinghouse it has a filter that you need to change at intervals See your Maintenance Schedule for more about servicing this filter Alcohol Injector Option If your vehicle has ai...

Page 228: ...ve really good braking Your vehicle was designed and tested with top quality GM brake parts When you replace parts of your braking system for example when your brake linings wear down and you have to...

Page 229: ...the side of the reservoir If the level is below the MAX line add fluid To add fluid clean away any dirt around the reservoir cap Remove the reservoir cap and add enough fluid to bring it up to the MA...

Page 230: ...can explode You can be badly hurt if you aren t careful See Jump Starting in the Index for tips on working around a battery without getting hurt When you are ready to use the vehicle again refer to t...

Page 231: ...ield 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 Other Service Items Component Box Your vehicle has a...

Page 232: ...emoving the two 8 mm bolts and pulling it off When you re through be sure to put on the front cover before you put on the top cover Fuel Filter Gasoline Engines The steel fuel filter is located inside...

Page 233: ...ngine Then partially open the drain valve at the bottom of the filter Secondary Fuel Filter and Water Separator Heater If Equipped If you have a diesel engine you may have this spin on filter and fuel...

Page 234: ...l on it before installation 7 Put in the new cylinder Turn it clockwise until it just starts to contact the gasket 8 Tighten the cylinder another one half turn 180 degrees Don t overtighten 9 Re tight...

Page 235: ...r Catalytic Converter Assemblies Diesel Engines Some vehicles equipped with a CaterpillarR diesel engine utilize a catalytic converter muffler assembly If your vehicle is equipped with a catalytic con...

Page 236: ...en by a sudden impact such as when you hit a pothole Keep tires at the recommended pressure D Worn old tires can cause accidents If your tread is badly worn or if your tires have been damaged replace...

Page 237: ...act the rim and wheel maker to get their advice Dual Tire Operation When the vehicle is new or whenever a wheel wheel bolt or wheel nut is replaced check the wheel nut torque as indicated If your vehi...

Page 238: ...r location of the damage CAUTION Mixing tires could cause you to lose control while driving If you mix tires of different types like radial and bias belted tires the vehicle may not handle properly an...

Page 239: ...ash All wheel nuts must be properly tightened Follow the rules in this section to be sure they are This section lets you know how often to check the tightness of the wheel nuts on your vehicle and how...

Page 240: ...ly on the axle hub Install the outer rear tire and rim assembly so that its valve stem is exactly opposite the valve stem on the inner tire and rim assembly 3 Put on the wheel nuts 4 Finger tighten th...

Page 241: ...nd cause a serious crash If any stud is damaged because of a loose running wheel it could be that all of the studs are damaged To be sure replace all studs on the wheel If the stud holes in a wheel ha...

Page 242: ...technician check nut tightness on all wheels with a torque wrench every 1 000 miles 1 600 km When your vehicle is new or when a wheel or fastener is new you should have a technician tighten the wheel...

Page 243: ...carrying limits than the original wheels and tires doesn t change the GAWR or the GVWR of your vehicle NOTICE The wrong wheel can cause trouble in bearing life brake cooling speedometer odometer calib...

Page 244: ...D Lacquer Thinner D Nail Polish Remover They can all be hazardous some more than others and they can all damage your vehicle too Don t use any of these unless this manual says you can In many uses the...

Page 245: ...b it roughly 5 As soon as you ve cleaned the section use a sponge to remove the suds 6 Wipe cleaned area with a clean damp towel or cloth 7 Wipe with a clean cloth and let dry Special Fabric Cleaning...

Page 246: ...nditions Cleaning Interior Plastic Components Use only a mild soap and water solution on a soft cloth or sponge Commercial cleaners may affect the surface finish Care of Safety Belts Keep belts clean...

Page 247: ...n cloth at least every six months During very cold damp weather more frequent application may be required See Recommended Fluids and Lubricants in the Index Cleaning the Outside of Your Vehicle The pa...

Page 248: ...on abrasive and made for a basecoat clearcoat paint finish NOTICE Machine compounding or aggressive polishing on a basecoat clearcoat paint finish may dull the finish or leave swirl marks Foreign mate...

Page 249: ...m A coating of wax rubbed to high polish is recommended for all bright metal parts Cleaning Tires To clean your tires use a stiff brush with a tire cleaner NOTICE When applying a tire dressing always...

Page 250: ...om the underbody with plain water Clean any areas where mud and other debris can collect Dirt packed in closed areas of the frame should be loosened before being flushed Your dealer or an underbody ve...

Page 251: ...last plastic rubber and vinyl 1052925 16 oz 0 473 L Multi Purpose Interior Cleaner Cleans carpets seats interior trim door panels and floor mats 1052929 16 oz 0 473 L Wheel Cleaner Spray on and rinse...

Page 252: ...e certificates of title and registration Engine Identification The 8th character in your VIN is the engine code This code will help you identify your engine specifications and replacement parts Servic...

Page 253: ...ock 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 Power Windows and Other Power Options Circuit breakers...

Page 254: ...he circuit The circuit breaker will also become hot when it opens When it cools down it will reset itself There are two circuit breaker fuse blocks in your vehicle the instrument panel circuit breaker...

Page 255: ...Glow Relay ESC EVRV Gov Mod Engine ECM GAS 5 Checker Connector TICS ALDL Connector 6 Meter D R A B Warning Lamp Engine Stop Relay Ignition Relay Blower Motor Relay Auxiliary Relay Power Window Relay A...

Page 256: ...her Motor 22 Heated Mirror 2 Speed Axle Motor 2 Speed Axle Relay 23 Hydraulic Brake Relay M F A M Flasher Unit 24 Blower Motor Air Conditioner Relay 25 Trailer Turn RH Lamp Flasher Unit 26 Power Post...

Page 257: ...zard Warning Flashers Fuel Ignition Relay Gasoline Engines IGN SW3 Air Conditioner Axle Chassis INT EXT LIGHTS Parking Lamps Dome Lamp Instrument Panel Lights HEAD LAMP Headlamps Daytime Running Lamps...

Page 258: ...Location 7 2L L6 Cylinder block left rear upper corner below cylinder head 7 4L V8 Cylinder block above timing chain cover behind water pump Engine Identification and Data Engine RPO LG5 LP4 L21 Engin...

Page 259: ...the condition of the oil and its additives For more information consult your GM Truck dealer who is an authorized CaterpillarR engine dealer Transmission Fluid Capacity Capacities volumes shown are a...

Page 260: ...ities volumes are approximate Fuel Tank Capacity Model Gallons Liters Standard 50 0 189 3 Optional 100 0 378 5 Two 50 gallon 189 L tanks Above capacities volumes are approximate Air Conditioning Refri...

Page 261: ...AC Type PF 932 PCV Valve AC Type CV 774C Air Cleaner Donaldson P134353 Donaldson P533355 Fuel Filter AC TP 915 Primary AC Type GF 481 Pressure Caps RC 54 Optional Davco K28 D350921 spin on type filter...

Page 262: ...yellowblue 6 76 NOTES...

Page 263: ...e services to retain its safety dependability and emission control performance 7 2 Introduction 7 4 Part A Scheduled Maintenance Services 7 5 Scheduled Maintenance Except DURAMAXtDIESEL 7 28 Scheduled...

Page 264: ...nance not only helps to keep your vehicle in good working condition but also helps the environment All recommended maintenance procedures are important Improper vehicle maintenance can even affect the...

Page 265: ...d enough to do some work on your vehicle you will probably want to get the service information See Service and Owner Publications in the Index Part B Owner Checks and Services tells you what should be...

Page 266: ...vice needs you ll 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 Make sure whoever services...

Page 267: ...this Maintenance Schedule for further explanation of maintenance services and CaterpillarR diesel application 100 Miles 160 km j Wheel stud nut service 45 500 Miles 800 km j Wheel stud nut service 45...

Page 268: ...j Check fluid levels or every 3 months whichever occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner filter or every month whichever o...

Page 269: ...occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner filter or every month whichever occurs first See Air Conditioner Filter in the Inde...

Page 270: ...e oil j Wheel bearing grease type service or every 24 months whichever occurs first and whenever hubs are removed 23 j Wheels and tires service 15 j Hydraulic brake service or every 6 months whichever...

Page 271: ...onths whichever occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner filter or every month whichever occurs first See Air Conditioner Fi...

Page 272: ...n air conditioner filter or every month whichever occurs first See Air Conditioner Filter in the Index j Inspect door hinge pins and bushings and replace as necessary Lubricate door hinge pins and rol...

Page 273: ...cation service or every 6 months whichever occurs first 12 j Clean air conditioner filter or every month whichever occurs first See Air Conditioner Filter in the Index j Lubricate door hinge pins and...

Page 274: ...7 j Hydraulic parking brake service or every 6 months whichever occurs first 8 j Engine drive belts service or every 12 months whichever occurs first 18 j Clutch pedal free travel service 10 j Throttl...

Page 275: ...ssary Lubricate door hinge pins and rollers with engine oil j Replace air conditioning filter dryer or every 18 months whichever occurs first and whenever refrigerant charge is lost for any reason j W...

Page 276: ...nths whichever occurs first 3 4 17 j Air brake service or every 6 months whichever occurs first 39 j Lubricate door hinge pins and rollers with engine oil j Wheels and tires service 15 j Hydraulic bra...

Page 277: ...tires service 15 j Hydraulic brake service or every 6 months whichever occurs first 7 j Hydraulic parking brake service or every 6 months whichever occurs first 8 j Clutch pedal free travel service 10...

Page 278: ...rolled engine cooling fan service 4 20 j Shields and undercab insulation service 4 5 21 j Air intake system service or every 24 months whichever occurs first 4 5 24 j Thermostatically controlled air c...

Page 279: ...gine oil and filter service 3 9 j Check fluid levels or every 3 months whichever occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner fi...

Page 280: ...occurs first 18 j Clutch pedal free travel service 10 j Throttle linkage service 19 j Thermostatically controlled engine cooling fan service 4 20 j Shields and undercab insulation service 4 5 21 j Ch...

Page 281: ...er or every 18 months whichever occurs first and whenever refrigerant charge is lost for any reason j Wheels and tires service 15 j Hydraulic brake service or every 6 months whichever occurs first 7 j...

Page 282: ...onths whichever occurs first 8 j Engine drive belts service or every 12 months whichever occurs first 18 j Clutch pedal free travel service 10 j Throttle linkage service 19 j Thermostatically controll...

Page 283: ...le replacement diesel or every 36 months whichever occurs first 19 j Air brake service or every 12 months or 3 600 hours whichever occurs first 44 150 000 Miles 240 000 km j Cooling system service or...

Page 284: ...le 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 7 Inspect brake lin...

Page 285: ...nd 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 Lubricate transmission and...

Page 286: ...500 miles 800 km and 2 000 miles 3 000 km after first use of parts 17 Check complete exhaust system and cab areas near the exhaust system for broken damaged missing or out of position parts Also inspe...

Page 287: ...e cover fits tightly and that the wing nut is tight Tighten connections and fasteners or replace parts as required 25 Check thermostatically controlled air cleaner installation to make certain that al...

Page 288: ...k Pressure test cooling system and pressure cap For CaterpillarR diesel engines always refer to the Caterpillar Diesel Engine Operation Maintenance Manual for coolant recommendations and change interv...

Page 289: ...ck release valve quick release double check valve combination parking brake control valve double check valve pressure protection valve and alcohol injector Remove disassemble and clean the application...

Page 290: ...filter or every month whichever occurs first See Air Conditioner Filter in the Index j Clutch pedal free travel service 10 j Lubricate clutch shift block or every month whichever occurs first j Rear a...

Page 291: ...Index j Lubricate clutch shift block or every month whichever occurs first 13 000 Miles 20 800 km j Change engine oil and filters or every 3 months whichever occurs first 3 9 j Check fluid levels or e...

Page 292: ...very month whichever occurs first 4 5 21 j Check air brake relay valve operation and check for leaks or every month or every 300 hours whichever occurs first 16 250 Miles 26 000 km j Check fluid level...

Page 293: ...every month whichever occurs first 4 5 21 j Clean air brake application valve or every 3 months or every 300 hours whichever occurs first lubricate linkage 22 750 Miles 36 400 km j Check fluid levels...

Page 294: ...or every 24 months whichever occurs first and whenever hubs are removed 23 j Wheels and tires service 15 j Hydraulic brake service or every 6 months whichever occurs first 7 j Hydraulic parking brake...

Page 295: ...or every month whichever occurs first 32 500 Miles 52 000 km j Change engine oil and filters or every 3 months whichever occurs first 3 9 j Check fluid levels or every 3 months whichever occurs first...

Page 296: ...eck fluid levels or every 3 months whichever occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner filter or every month whichever occurs...

Page 297: ...ry 300 hours whichever occurs first j Clean air brake application valve or every 3 months or every 300 hours whichever occurs first lubricate linkage 42 250 Miles 67 600 km j Check fluid levels or eve...

Page 298: ...oner filter or every month whichever occurs first See Air Conditioner Filter in the Index j Lubricate clutch shift block or every month whichever occurs first 52 000 Miles 83 200 km j Change engine oi...

Page 299: ...rst 18 j Clutch pedal free travel service 10 j Lubricate clutch shift block or every month whichever occurs first j Throttle linkage service 19 j Thermostatically controlled engine cooling fan service...

Page 300: ...first See Air Conditioner Filter in the Index j Lubricate clutch shift block or every month whichever occurs first 58 500 Miles 93 600 km j Change engine oil and filters or every 3 months whichever oc...

Page 301: ...lter or every month whichever occurs first See Air Conditioner Filter in the Index j Lubricate clutch shift block or every month whichever occurs first 65 000 Miles 104 000 km j Change engine oil and...

Page 302: ...fan service 4 20 j Shields and undercab insulation service or every month whichever occurs first 4 5 21 j Check air brake relay valve operation and check for leaks or every month or every 300 hours wh...

Page 303: ...ver occurs first 1 2 6 j Clean air conditioner filter or every month whichever occurs first See Air Conditioner Filter in the Index j Lubricate clutch shift block or every month whichever occurs first...

Page 304: ...l service 10 j Lubricate clutch shift block or every month whichever occurs first j Throttle linkage service 19 j Thermostatically controlled engine cooling fan service 4 20 j Shields and undercab ins...

Page 305: ...iles 135 200 km j Change engine oil and filters or every 3 months whichever occurs first 3 9 j Check fluid levels or every 3 months whichever occurs first 1 2 6 j Chassis lubrication service or every...

Page 306: ...month whichever occurs first See Air Conditioner Filter in the Index j Lubricate water pump or every 3 months whichever occurs first j Lubricate steering column shaft or every 3 months whichever occu...

Page 307: ...nths whichever occurs first 3 9 j Check fluid levels or every 3 months whichever occurs first 1 2 6 j Chassis lubrication service or every 6 months whichever occurs first 12 j Clean air conditioner fi...

Page 308: ...hichever occurs first lubricate linkage 100 000 Miles 166 000 km j Change power steering fluid or every 36 months whichever occurs first 13 j Front axle service or every 36 months whichever occurs fir...

Page 309: ...related maintenance services 2 Check the fluid level in the manual transmission 3 An Emission Control Service 4 A Noise Emission Control Device 5 Applies only to vehicles sold in the United States 6 C...

Page 310: ...Service Lubricate all grease fittings 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 complet...

Page 311: ...ecifications When parts are replaced the torque must be checked and adjusted more often during the first 6 000 miles 10 000 km Check torque at 500 miles 800 km and 2 000 miles 3 000 km after first use...

Page 312: ...components are tight Tighten connections and fasteners or replace parts as required 25 Check injection timing incorrect injection timing could result in increased exhaust emission or smoke emission or...

Page 313: ...or excessive free play or travel or every 6 months whichever occurs first and have serviced if needed Check brakes more often if driving habits and conditions result in frequent braking D Test air lin...

Page 314: ...ing wear Remove disassemble clean and inspect the spring brake control valve replace rubber parts 45 For Stud Piloted Wheels Only Tighten the wheel stud nuts to the specified torque values at 100 mile...

Page 315: ...he 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 pr...

Page 316: ...ion 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...

Page 317: ...ion your vehicle needs service Automatic Transmission Shift Indicator Check Check that the indicator points to the gear chosen Steering Check Be alert for any changes in steering action abnormal front...

Page 318: ...eck Move the control to the defrost symbol and the fan to HI or the high symbol Then check the airflow from the ducts at the inside base of the windshield Mirrors and Sun Visors Check Check that frict...

Page 319: ...r pan and exhaust system At least every spring flush these materials from the underbody with plain water Take care to clean well any areas where mud and other debris can collect Sediment packed in clo...

Page 320: ...50 50 mixture of clean drinkable water and use only GM GoodwrenchR DEX COOLR or HavolineR DEX COOLR Coolant See Engine Coolant in the Index USAGE FLUID LUBRICANT Engine Coolant Caterpillar Diesel Eng...

Page 321: ...nded lubricant to use Automatic Transmission See the Allison Transmission Operator s Manual for correct Transmission Fluid USAGE FLUID LUBRICANT Chassis Lubrication Chassis Lubricant GM Part No 123779...

Page 322: ...nts of NLGI 2 Category GC or GC LB GM Part No 1051344 or equivalent Cab Door Hinges and Latches Multi Purpose Lubricant SuperlubeR GM Part No 12346241 or equivalent USAGE FLUID LUBRICANT Weatherstrip...

Page 323: ...on the maintenance record charts provided here Any additional information from Owner Checks and Services can be added on the following record pages Also you should retain all maintenance receipts Your...

Page 324: ...yellowblue 7 62 Maintenance Record DATE ODOMETER READING SERVICED BY MAINTENANCE PERFORMED...

Page 325: ...ny safety defects 8 2 Customer Satisfaction Procedure 8 3 Customer Assistance for Text Telephone TTY Users 8 3 Customer Assistance Offices 8 5 Roadside Assistance 8 5 Warranty Information 8 6 Reportin...

Page 326: ...STEP ONE Discuss your concern with a member of dealership management Normally concerns can be quickly resolved at that level If the matter has already been reviewed with the sales service or parts man...

Page 327: ...low Step One first if you have a concern Customer Assistance for Text Telephone TTY Users To assist customers who are deaf hard of hearing or speech impaired and who use Text Telephones TTYs GMC has T...

Page 328: ...MODC Customer Communication Centre 169 007 1908 Colonel Sam Drive Oshawa Ontario L1H 8P7 Telephone 905 644 4112 Fax 905 644 4866 Caribbean Numbers 1 800 496 9992 English Puerto Rico 1 800 496 9993 Spa...

Page 329: ...mended services can also be arranged for situations such as retrieving locked in keys changing a tire or delivering gasoline at a charge to the owner We also provide dealer information at no charge su...

Page 330: ...SA cannot become involved in individual problems between you your dealer or General Motors To contact NHTSA you may either call the Auto Safety Hotline toll free at 1 800 424 9393 or 366 0123 in the W...

Page 331: ...48343 6008 In Canada please call us at 1 800 263 3777 English or 1 800 263 7854 French Or write General Motors of Canada Limited Customer Communication Centre 163 005 1908 Colonel Sam Drive Oshawa On...

Page 332: ...ation about the vehicle The owner s manual will include the Maintenance Schedule for all models In Portfolio Includes a Portfolio Owner s Manual and Warranty Booklet RETAIL SELL PRICE 15 00 Without Po...

Page 333: ...9 90 00 1999 50 00 1999 15 00 1999 10 00 TOTAL MATERIAL Michigan Purchasers U S Order Processing 5 00 Canadian Postage GRAND TOTAL add 6 sales tax See Note Below GM GMC ORD99 Prices are subject to cha...

Page 334: ...yellowblue 8 10 NOTES...

Page 335: ...layer 3 8 Antenna 3 12 Antifreeze 6 30 Anti Lock Brake 4 8 Brake System Warning Light 2 58 4 8 Appearance Care 6 58 Appearance Care Materials Chart 6 65 Apply Park Brake Warning Light 2 57 Ashtrays 2...

Page 336: ...ion 1 16 Certification Tire Label 4 29 6 66 Changing a Flat Tire 5 31 Charging System Indicator Light 2 53 Check Gages Indicator Light 2 64 Checking Your Restraint Systems 1 30 Chemical Paint Spotting...

Page 337: ...6 34 Exhaust Brake 2 19 Fuel Filter 6 46 Manual Fast Idle System 2 12 Warm Up 2 11 Differential Lock Indicator Light 2 61 Do Not Shift Warning Light 2 54 Dome Lamp 2 42 Door Locks 2 3 Latches Check 7...

Page 338: ...Speed Governor 2 51 Running While Parked 2 31 Specifications 6 72 Starter Over Crank Protection 2 6 Starting 2 8 Starting Your Diesel 2 9 Starting Your DURAMAX DIESEL 2 13 Starting Your Gasoline 2 7...

Page 339: ...6 67 Gages Air Pressure 2 66 Engine Coolant Temperature 2 59 Engine Oil Pressure 2 62 Fuel 2 65 Hourmeter 2 66 Speedometer 2 51 Tachometer 2 52 Voltmeter 2 54 Gasoline Engine Oil 6 14 Additives 6 19...

Page 340: ...stem Warning 2 55 Charging System Indicator 2 53 Check Gages Indicator 2 64 Daytime Running Lamps Indicator 2 64 Diff Lock Indicator 2 61 Do Not Shift Warning 2 54 Engine Overspeed Warning 2 64 Exhaus...

Page 341: ...arR Diesel Engine 6 21 Oil Diesel Engine 6 21 Oil Gasoline Engine 6 17 Owner Checks and Services 7 53 Owner Publications Order Form 8 9 Owner Publications Ordering 8 8 Paint Spotting Chemical 6 64 Par...

Page 342: ...1 16 Smaller Children and Babies 1 18 Use During Pregnancy 1 15 Why They Work 1 5 Safety Defects Reporting 8 6 8 7 Safety Warnings and Symbols iii Scheduled Maintenance 7 5 7 28 Scheduled Maintenance...

Page 343: ...a Flat 5 31 Cleaning 6 63 Dual Tire Operation 6 51 Inflation 6 50 Inflation Check 7 53 Loading 4 29 Pressure 6 50 Wheel Replacement 6 56 When It s Time for New 6 52 Top Strap 1 24 Torque Wheel Nut 6...

Page 344: ...ranty Information 8 5 Washer Fluid Windshield 2 37 Washing Your Vehicle 6 61 Weatherstrips 6 61 Wheel Alignment 6 52 Nut Torque 6 72 Replacement 6 56 Tightening the Wheel Nuts 6 53 Used Replacement 6...

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