Chevrolet DURAMAX 2011 User Manual Download | Manualshive

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Black plate (42,1)

DURAMAX Diesel Engine (LML/LGH) - 2011

9-42

Driving and Operating

.

PTO: RELEASE BRAKE

.

PTO: REDUCE VEHICLE
SPEED

.

PTO: REDUCE ENGINE SPEED

.

PTO: DISENGAGE CRUISE
CONTROL (Mobile only)

In addition to these messages, the
PTO switch LED will indicate when
all conditions required to engage
PTO have not been met. When
enabling PTO, the LED will turn on,
then off after one second. Under
normal operating conditions, the
PTO LED will remain on throughout
the PTO operating cycle.

PTO Disengage Conditions

To disengage the stationary or
mobile PTO operation, do one of the
following:

.

Press the brake. PTO will
disengage immediately. The
PTO LED will blink slowly,
indicating that the PTO set
speed is stored in memory.
Pressing the +/RES switch
position will restore engine

speed to the stored PTO set
speed. PTO can also be
programmed to reengage at
PTO standby speed upon
releasing the brake pedal
(mobile PTO only).

.

Press and release the

9

on the

PTO in

‐

cab switch. The engine

speed will return to normal
engine idle. The PTO LED light
will go off indicating the PTO
load relay has been disengaged
and PTO set speed has been
cleared from memory.

.

From the remote PTO controls,
move the speed enable switch to
the off position. The engine will
return to normal idle. The PTO
load relay is disengaged. PTO
memory speed is also cleared.
(Stationary PTO only)

.

From the remote PTO controls,
press the remote engine
shutdown switch. PTO is
disengaged and the engine is
shutdown simultaneously.
(Stationary remote PTO only)

The mobile PTO mode will also
disengage if the following conditions
are detected by the vehicle
electronics:

.

The PTO load becomes
disengaged. (See service
manual)

.

Vehicle speed exceeds 80 km/h
(50 mph).

.

Engine speed exceeds the
maximum allowed PTO
operating speed of 3100 rpm
(factory setting 2100 rpm).

.

The PTO control system will
attempt to limit accelerator pedal
and PTO switch input as the
vehicle approaches the above
operational limits. There are
some vehicle conditions, such
as down hill acceleration,
which may cause vehicle
speed and/or engine speed
limits to be exceeded. Under
these conditions, PTO is
disengaged.

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Summary of Contents for DURAMAX 2011

Page 1: ...e Messages 5 10 Vehicle Personalization 5 14 Driving and Operating 9 1 Starting and Operating 9 1 Engine Exhaust 9 10 Brakes 9 15 Fuel 9 16 Towing 9 35 Conversions and Add Ons 9 39 Vehicle Care 10 1 General Information 10 1 Vehicle Checks 10 4 Electrical System 10 28 Service and Maintenance 11 1 General Information 11 1 Scheduled Maintenance 11 2 Recommended Fluids Lubricants and Parts 11 8 Mainte...

Page 2: ...first sold in Canada substitute the name General Motors of Canada Limited for GMC and Chevrolet Motor Division wherever it appears in this manual This manual contains information that pertains to the operation of your diesel engine It also contains your Diesel Maintenance Schedule The sections in this manual correspond to the sections in your owner manual This manual along with your owner manual w...

Page 3: ...f the vehicle It does not explain everything you need to know about the vehicle Read this supplement along with the owner manual to learn about the vehicle s features and controls Index A good place to look for what you need is the Index in back of this supplement It is an alphabetical list of what is in the supplement and the page number where you will find it ...

Page 4: ...Black plate 4 1 DURAMAX Diesel Engine LML LGH 2011 iv Introduction 2 NOTES ...

Page 5: ...C 13 F or above 2 Second and 3 Third shift ranges only at 35 C 31 F to 25 C 13 F 2 Second shift range only at 35 C 31 F or lower Torque converter clutch operation will also be prevented when air or transmission oil temperatures are below certain levels For areas where ambient temperatures are below 40 C 40 F use synthetic transmission fluid approved to Allison Transmission specification TES 295 Se...

Page 6: ...he transmission is in this mode upshifts may be delayed This is normal and does not indicate an operational problem Four Wheel Drive Allison Transmission When operating in 4 Four Wheel Drive Low there is a very deep gear reduction The resulting shifts will feel exaggerated Performance and Maintenance Engine Oil Life System The engine oil life system calculates engine oil life based on vehicle use ...

Page 7: ...th a Diesel Particulate Filter DPF that by design will filter or trap particulates The DPF is located under the vehicle in the exhaust system and looks like a catalyst Depending on a number of factors monitored by the engine computer the DPF will need to be cleaned of accumulated solids When a cleaning is needed the engine computer will initiate a cleaning action by warming the exhaust gas tempera...

Page 8: ...ervice Engine Soon Light in the instrument cluster and the DIC will display the message REDUCED ENGINE POWER See Diesel Particulate Filter Exhaust Filter on page 9 10 and Engine Power Messages on page 5 11 Fuel Use Ultra Low Sulfur Diesel Fuel ULSD Use Ultra Low Sulfur Diesel Fuel ULSD only The emission control hardware used on the vehicle may be damaged by using fuel with high sulfur levels Use o...

Page 9: ...d html See Customer Assistance Offices in the owner manual for phone numbers to assist you in contacting a GM dealer See Recommended Fluids and Lubricants on page 11 8 As the DEF tank becomes low on fluid warnings begin with approximately 1600 km 1000 miles of remaining range These warnings will increase in intensity as the tank becomes empty Once the tank is empty the vehicle will be speed limite...

Page 10: ...Black plate 6 1 DURAMAX Diesel Engine LML LGH 2011 1 6 In Brief 2 NOTES ...

Page 11: ...luid DEF Warning Light 5 9 Information Displays Driver Information Center DIC 5 10 Vehicle Messages Vehicle Messages 5 10 Engine Cooling System Messages 5 11 Engine Oil Messages 5 11 Engine Power Messages 5 11 Fuel System Messages 5 11 Diesel Exhaust Fluid Messages 5 11 Diesel Particulate Filter Messages 5 12 Service Vehicle Messages 5 12 Starting the Vehicle Messages 5 12 Transmission Messages 5 ...

Page 12: ...Black plate 2 1 DURAMAX Diesel Engine LML LGH 2011 5 2 Instruments and Controls Warning Lights Gauges and Indicators Instrument Cluster English Pickup Shown Metric Similar ...

Page 13: ...Black plate 3 1 DURAMAX Diesel Engine LML LGH 2011 Instruments and Controls 5 3 English Van Shown Metric Similar ...

Page 14: ...p Models English Pickup Models Metric Van Models English Van Models When the ignition is on the fuel gauge shows approximately how much fuel the vehicle has left in the tank The gauge will first indicate E empty before the vehicle is out of fuel but the vehicle s fuel tank should be filled soon An arrow on the fuel gauge indicates the side of the vehicle the fuel door is on ...

Page 15: ...the tank was half full but it actually took a little more or less than half the tank s capacity to fill the tank The gauge moves a little while turning a corner or speeding up The gauge does not go back to E empty when the ignition is turned off None of these indicate a problem with the fuel gauge For information on how to fill the fuel tank see Filling the Tank on page 9 33 The vehicle also has a...

Page 16: ...re message may display on the Driver Information Center DIC or for vehicles without DIC the oil pressure light comes on If the oil level is outside the normal operating range of 0 548 kPa 0 80 psi check the oil level immediately DO NOT operate the engine with the oil pressure warning light on or a ENGINE OIL LOW ADD OIL message displayed Malfunction Indicator Lamp A computer system called OBD II O...

Page 17: ...n controls and can cause this light to come on Modifications to these systems could lead to costly repairs not covered by the vehicle warranty This could also result in a failure to pass a required Emission Inspection Maintenance test See Accessories and Modifications on page 10 1 This light comes on during a malfunction in one of two ways Light Flashing A misfire condition has been detected A mis...

Page 18: ...el for Diesel Engines on page 9 16 If none of the above have made the light turn off your dealer can check the vehicle The dealer has the proper test equipment and diagnostic tools to fix any mechanical or electrical problems that might have developed Emissions Inspection and Maintenance Programs Some state provincial and local governments may have programs to inspect the on vehicle emission contr...

Page 19: ...to start light stay on for a shorter amount of time than most diesel engines For more information see Starting the Diesel Engine on page 9 1 Diesel Exhaust Fluid DEF Warning Light This light a Driver Information Center DIC Message and a chime come on when there is an issue with the Diesel Exhaust Fluid See Diesel Exhaust Fluid Messages on page 5 11 for information on the specific message displayin...

Page 20: ...he CHANGE FUEL FILTER message will appear on the display You should change your fuel filter as soon as you can FUEL FILTER LIFE RESET You must reset the FUEL FILTER LIFE REMAINING display after each fuel filter change It will not reset itself Also be careful not to reset the FUEL FILTER LIFE REMAINING display at any time other than when the fuel filter has just been changed because it cannot be re...

Page 21: ...up and cycle the ignition to be sure this message clears This message clears itself after 10 seconds until the next ignition cycle See Engine Oil on page 10 7 for additional information Engine Power Messages ENGINE POWER IS REDUCED A computer monitors the operation of the electric accelerator If the ENGINE POWER IS REDUCED message comes on while driving there will be a reduction in performance and...

Page 22: ...er cleaning is required To clean the filter drive the vehicle above 50 km h 30 mph until the warning message goes off This will take about 30 minutes If the filter is not cleaned the malfunction indicator lamp will come on and the REDUCED ENGINE POWER message will be displayed Vehicle performance will be limited See Diesel Particulate Filter Exhaust Filter on page 9 10 for more information Service...

Page 23: ... customization menus Press the customization button until ELEVATED IDLE appears on the DIC display Press the set reset button once to access the settings for this feature Then press the customization button to scroll through the following settings OFF ON or NO CHANGE Choose one of the available settings and press the set reset button while it is displayed on the DIC to select it FAST IDLE ON If yo...

Page 24: ...displayed the vehicle speed is being limited to 89 KM H 55 MPH SPEED LIMITED TO 7 KM H 4 MPH This message will be displayed along with other messages These messages include EXHAUST FLUID EMPTY REFILL NOW EXHAUST FLUID QUALITY POOR or SERVICE EXHAUST FLUID SYSTEM When this message is displayed the vehicle speed is being limited to 7 KM H 4 MPH Vehicle Personalization Your Duramax Diesel vehicle may...

Page 25: ...ization button until the PTO SET 1 SPEED screen appears on the DIC display Press the set reset button once to access the settings for this feature Then press the customization button to scroll through the following choices 1000 RPM 1200 RPM 1400 RPM 1600 RPM 1800 RPM 2000 RPM 2200 RPM 2400 RPM NO CHANGE To select a setting press the set reset button while the desired setting is displayed on the DI...

Page 26: ...0 RPM 350 RPM NO CHANGE To select a setting press the set reset button while the desired setting is displayed on the DIC PTO SHUTDOWN TIME This feature allows you to select the PTO shutdown time Press the customization button until the PTO SHUTDOWN TIME screen appears on the DIC display Press the set reset button once to access the settings for this feature Then press the customization button to s...

Page 27: ...el Filter Replacement 9 31 Filling the Tank 9 33 Filling a Portable Fuel Container 9 34 Towing Trailer Towing 9 35 Conversions and Add Ons Power Take Off PTO 9 39 Starting and Operating Starting the Diesel Engine The diesel engine starts differently than a gasoline engine The vehicle will only start in the P Park or the N Neutral position Move the shift lever to P Park or N Neutral To restart the ...

Page 28: ...g vehicle and the engine overheats you would not be there to see the overheated engine indication This could damage the vehicle Do not let the engine run when you are not in the vehicle Cold Weather Starting Diesel Engine The following tips will help with cold weather starting Use the recommended engine oil when the outside temperature drops below freezing See Engine Oil on page 10 7 When the outs...

Page 29: ...ge the engine There could also be a fire which could cause serious personal injury Elevated Idle The engine has a cold temperature high idle feature which elevates the engine idle speed from base idle to 1050 rpm for pickup models or 1200 rpm for van models when outside temperatures are below 0 C 32 F and the engine coolant temperature is below 65 C 150 F This feature enhances heater performance b...

Page 30: ...n be used to increase the engine idle speed Fast Idle control will be enabled when the following conditions are met The park brake is set The transmission is in P Park or N Neutral The vehicle speed is about 0 km h 0 mph The cruise control is in the On position See Cruise Control in the Index of the vehicle owner manual The cruise control Set switch is pressed and released for Preset Fast Idle Spe...

Page 31: ... radiator grille to have full airflow under all conditions The vehicle may overheat if the cover is used while towing a trailer Do not modify the cover The winter cover does not cover some sections of the front of the vehicle because these openings are needed to provide enough airflow to the radiator grille and air cooler in extremely cold temperatures When the winter cover is used the temperature...

Page 32: ...ving and Operating Installation Chevrolet Pickup Open the hood A Slide the channels of the cover down the back edge of the grille on both sides B Hook J clips to the bottom of the grille C Hook J clips on to the top edge of the grille by the engine compartment ...

Page 33: ... grille E To remove the winter cover reverse the steps listed previously Installation GMC Pickup Open the hood A Slide the channels of the cover down the back edge of the grille on both sides B Insert pockets between the grille and the bumper C Hook J clips on to the top edge of the grille by the engine compartment ...

Page 34: ...iving and Operating D To remove the winter cover reverse the steps listed previously Installation Van Models Open the hood and secure it with the prop rod A Hook the 5 J clips on to the bottom edge of the grille B Hook the top center J clip by the hood latch ...

Page 35: ...nsion cord could overheat and cause a fire You could be seriously injured Plug the cord into a properly grounded three prong 110 volt AC outlet If the cord will not reach use a heavy duty three prong extension cord rated for at least 15 amps 4 Before starting the engine be sure to unplug and store the cord as it was before to keep it away from moving engine parts and prevent damage The length of t...

Page 36: ...oolant temperature is less than 75 C 167 F Parking Over Things That Burn WARNING Things that can burn could touch hot exhaust parts under the vehicle and ignite Do not park over papers leaves dry grass or other things that can burn Engine Exhaust Diesel Particulate Filter Exhaust Filter The vehicle has a Diesel Particulate Filter DPF as part of the exhaust system to reduce vehicle emissions The DP...

Page 37: ...ystem and exhaust gases are very hot Things that burn could touch hot exhaust parts under the vehicle and ignite You or others could be burned Do not park or idle for an extended period of time near or over papers leaves dry grass or other things that can burn Keep the exhaust area clear of material that could ignite or burn See Parking Over Things That Burn on page 9 10 for more information Notic...

Page 38: ...st Fluid WARNING Diesel Exhaust Fluid DEF is corrosive Do not allow it to come in contact with your skin eyes or the finished surfaces of the vehicle If exposed it may cause skin and eye irritation Wear skin and eye protection when handling Inhalation may cause irritation to the upper respiratory tract Store in a cool well ventilated area For more safety information see the label of the Diesel Exh...

Page 39: ...lease the vehicle from speed limitation Do not over fill the DEF tank When fluid reaches the top of the fill pipe stop filling Do not top off the DEF tank If you spill DEF on the vehicle while filling the tank wipe the surface with a damp cloth DEF Fill Vans For vans the DEF fill is located behind the fuel fill door The DEF cap is blue and diesel cap is green Fill tube location for chassis cab and...

Page 40: ... remove the speed limitation If DEF is added under freezing conditions additional time may be required to remove speed limitations A DIC message EXHAUST FLUID RANGE XXX will be displayed at approximately 1600 km 1000 miles of fluid range remaining This message will appear again at approximately 500 km 300 miles of range remaining before the exhaust fluid tank becomes empty Below 500 km 300 miles o...

Page 41: ...will display SERVICE EXHAUST FLUID SYSTEM SEE OWNERS MANUAL NOW In some cases this message will clear itself indicating that the DEF system was able to correct the condition If the DIC massage persists see your dealer After 322 km 200 miles of driving without correcting the problem a DIC message 89 km h 55 mph MAX SPEED UPON RESTART will be displayed There will also be a warning light and chime Th...

Page 42: ... the vehicle owner manual Automatic downshifts will not occur if the vehicle is in Range Selection Mode See Manual Mode in the vehicle owner manual The exhaust brake only activates when the transmission torque converter is locked This can vary based on vehicle speed gear and load The exhaust brake will be more active when in Tow Haul Mode Fuel Fuel for Diesel Engines Some states and provinces have...

Page 43: ...life and a change filter message may come on If you run out of fuel Running Out of Fuel on page 9 30 tells you how to restart the engine What Fuel to Use in The U S Notice Use of diesel fuel other than Ultra Low Sulfur Diesel 15 ppm sulfur maximum will cause permanent damage to the exhaust after treatment system This damage would not be covered by the vehicle warranty The emission control system r...

Page 44: ...e the possibility of damage to the fuel system and engine Notice Raw vegetable oil or other unmodified bio oils or fats are not biodiesel and must not be used in your vehicle as they could damage the fuel system and engine What not to use Do not use home made biodiesel in your vehicle since its quality cannot be verified by approved scientific methods Home test kits are not approved scientific met...

Page 45: ... version of ASTM specification D7467 Biodiesel blend B6 B20 Biodiesel is an emerging product and its quality can vary widely To reduce the risk of poor quality fuel we recommend that biodiesel users purchase biodiesel blends from a BQ 9000 certified marketer A listing of certified marketers can be found at www bq 9000 org If there are questions about the biodiesel containing fuels you are using co...

Page 46: ...re and biodiesel fuel requires proper blending for winter time operation Fuels improperly blended for cold temperature operation may result in restricted fuel filters and degraded vehicle performance Your vehicle is equipped with a fuel heating system to provide a level of protection against filter plugging from gelling waxing of conventional diesel fuel and biodiesel blends However the system wil...

Page 47: ...e fuel out of the tank If something ignites the fuel a fire could start and people could be burned To help avoid this try filling the tank more slowly and fill the fuel tank only until the automatic nozzle shuts off Do not try to top it off Accidental Refueling with Gasoline If you accidentally refuel with gasoline your vehicle will run very rough will produce smoke and will have significantly red...

Page 48: ...loss If Type A fuel is used in warmer temperatures stalling and hard starting may occur Diesel Type B fuel is blended for higher temperatures experienced during most of the year Premium Diesel Fuel Diesel fuels corresponding to the Engine Manufacturers Association EMA Recommended Guideline on Premium Diesel Fuel FQP 1A could provide better starting less noise and better vehicle performance but the...

Page 49: ...nmental benefits However biodiesel has unique properties and needs to be handled differently than diesel fuel Its use presents additional risks and may not be appropriate in all situations Certain vehicle operating modes increase these risks and should be avoided Read further to determine if your driving habits are compatible with the use of biodiesel Biodiesel fuel quality degrades with time and ...

Page 50: ...el fuel may become loosened with a sudden switch to biodiesel blends and cause fuel filter plugging This vehicle is equipped with a fuel filter restriction monitoring system that will alert you if the fuel filter requires service but it will not prevent damage caused by poor quality biodiesel Use of biodiesel blends will degrade the performance of your vehicle s water separator Biodiesel reduces t...

Page 51: ...ssible preferably until the fuel gauge reads near E empty Refuel with Ultra Low Sulfur Diesel fuel Your dealer will be able to perform this procedure Operating your vehicle for a prolonged period of time on gasoline could result in engine or fuel system damage which would not be covered by the vehicle warranty Cold Weather Operation Follow the instructions listed previously under the heading What ...

Page 52: ... qualified technician Improper purging can damage the fuel system and block the FOH Sometimes water can be pumped into the fuel tank along with the diesel fuel This can happen if a service station does not regularly inspect and clean its fuel tanks or if it gets contaminated fuel from its suppliers If this happens a WATER IN FUEL SERVICE REQUIRED message will appear on the Driver Information Cente...

Page 53: ...he vehicle in a safe place Turn off the engine and apply the parking brake 2 Remove the fuel cap 3 Place a fuel resistant container under the fuel filter s For pickup models the filter drain valve is located in the engine compartment on the passenger side of the vehicle on the bottom of the fuel filter For van models the filter drain valves for the primary and secondary fuel filters are located in...

Page 54: ...he fuel tank should be purged Fuel Priming In order for the fuel system to work properly the fuel lines must be full of fuel and contain no air If air gets into the fuel lines it will be necessary to prime the fuel lines to eliminate air before operating the vehicle and the fuel operated heater FOH If air is in the fuel lines One of the following may have happened The vehicle ran out of fuel The f...

Page 55: ...e pump return upward between pushes 7 Operate the priming pump until a small amount of fuel seeps from the vent valve When fuel is seen the filter is now full of fuel and the system should be primed 8 Close the vent valve Clean any fuel that accumulated on the fuel filter Attempt to start the engine The engine may start and stall If this occurs operate the priming pump several times in between sta...

Page 56: ...gine stalls and you think that you have run out of fuel do this to restart the engine WARNING Diesel fuel is flammable It could start a fire if it gets on hot engine parts You could be burned Do not let too much fuel flow from the air bleed valve and wipe up any spilled fuel with a cloth 1 If parked on a level surface add at least two gallons of fuel However if parked on a slope up to five gallons...

Page 57: ...mmable It could start a fire if something ignites it and you could be burned Do not let it get on hot engine parts and keep matches or other ignition sources away First drain any water from the filter following the procedure for draining water listed previously The vehicle s engine must be off until the end of this procedure The fuel filter is located in the engine compartment on the passenger sid...

Page 58: ...ange the fuel filter yourself here s how to do it WARNING Diesel fuel is flammable It could start a fire if something ignites it and you could be burned Do not let it get on hot engine parts and keep matches or other ignition sources away First drain any water from the filter following the procedure for draining water listed previously The vehicle s engine must be off until the end of this procedu...

Page 59: ...o help avoid injuries to you and others read and follow all the instructions on the fuel pump island Turn off the engine when refueling Do not smoke near fuel or when refueling the vehicle Do not use cellular phones Keep sparks flames and smoking materials away from fuel Do not leave the fuel pump unattended when refueling the vehicle This is against the law in some places Do not re enter the vehi...

Page 60: ...licking sound Make sure you fully install the cap WARNING If a fire starts while you are refueling do not remove the nozzle Shut off the flow of fuel by shutting off the pump or by notifying the station attendant Leave the area immediately Notice If you need a new fuel cap be sure to get the right type Your dealer can get one for you If you get the wrong type it may not fit properly Notice If your...

Page 61: ...following Engine coolant at higher elevation will boil at a lower temperature than at or near sea level If the engine is turned off immediately after towing at high elevation on steep uphill grades the vehicle may show signs similar to engine overheating To avoid this let the engine run while parked preferably on level ground with the transmission in P Park and the park brake applied for at least ...

Page 62: ...s Pickup Model Extended Cab Long Box1 3 73 7 893 kg 17 400 lbs 11113 kg 24 500 lbs Pickup Model Crew Cab Long Box1 3 73 7 802 kg 17 200 lbs 11113 kg 24 500 lbs K 2500 Pickup Models 4WD Pickup Model Extended Cab Standard Box1 3 73 7 802 kg 17 200 lbs 11113 kg 24 500 lbs Pickup Model Crew Cab Standard Box1 3 73 7 575 kg 16 700 lbs 11113 kg 24 500 lbs Pickup Model Sierra Denali1 3 73 7 076 kg 15 600 ...

Page 63: ...heels1 3 73 7 802 kg 17 200 lbs 11113 kg 24 500 lbs Single Rear Wheels Sierra Denali1 3 73 7 756 kg 17 100 lbs 11113 kg 24 500 lbs C 3500 Pickup Model Crew Cab Long Box 2WD Single Rear Wheels1 3 73 7 847 kg 17 300 lbs 11113 kg 24 500 lbs Dual Rear Wheels3 3 73 9 752 kg 21 500 lbs 13 245 kg 29 200 lbs Dual Rear Wheels Sierra Denali3 3 73 9 662 kg 21 300 lbs 13 245 kg 29 200 lbs K 3500 Pickup Model ...

Page 64: ...Denali1 3 73 7 620 kg 16 800 lbs 11113 kg 24 500 lbs K 3500 Pickup Model Crew Cab Long Box 4WD Single Rear Wheels1 3 73 7 620 kg 16 800 lbs 11113 kg 24 500 lbs Dual Rear Wheels4 3 73 9 571 kg 21 100 lbs 13 245 kg 29 200 lbs Dual Rear Wheels Sierra Denali4 3 73 9 525 kg 21 000 lbs 13 245 kg 29 200 lbs Vans Models 2WD G2500 Cargo Van Short Wheelbase 3 54 4 536 kg 10 000 lbs 7 711 kg 17 000 lbs G2500...

Page 65: ...ent and conversions The GCWR for the vehicle should not be exceeded 1 Trailer rating limited to 5 897 kg 13 000 lbs with ball hitch 2 Trailer rating limited to 7 257 kg 16 000 lbs with ball hitch 3 Trailer rating limited to 7 484 kg 16 500 lbs with ball hitch 4 Trailer rating limited to 7 711 kg 17 000 lbs with ball hitch See Towing a Trailer in the owner manual for more information Conversions an...

Page 66: ...b PTO controls See your dealer for more information PTO Sub Modes The primary PTO modes have the following sub modes Engine speed control PTO load relay engagement disengagement Remote engine start and shutdown Stationary vehicle operation only PTO Enabling Disabling Conditions Enabling Conditions Stationary PTO To engage stationary PTO operation the following conditions must be met The engine mus...

Page 67: ...ation the following conditions must be met prior to turning on PTO The engine must be running The vehicle speed must be less than the PTO top vehicle speed limit The default setting is 80 km h 50 mph This limit can be adjusted by a service technician The shift lever may be in any position The brake must be pressed and then released The brake must then remain released Cruise control cannot be activ...

Page 68: ... The engine speed will return to normal engine idle The PTO LED light will go off indicating the PTO load relay has been disengaged and PTO set speed has been cleared from memory From the remote PTO controls move the speed enable switch to the off position The engine will return to normal idle The PTO load relay is disengaged PTO memory speed is also cleared Stationary PTO only From the remote PTO...

Page 69: ...nician from base engine idle rpm to max PTO operation speed 3100 rpm Speed 1 Pressing the SET position of the PTO switch results in a preset speed of 1250 rpm Speed 2 Pressing the RES position of the PTO switch results in a preset speed of 1700 rpm Pressing the 9 switch position on the PTO in cab switch or moving the remote PTO enable switch to OFF results in the return of the engine speed back to...

Page 70: ...n The vehicle will increase engine speed to a factory preset engine speed 800 rpm This PTO stand by speed is not intended to be an operational PTO speed but allows the engagement of the PTO at lower initial start up rpm to match with the engagement of the PTO load relay The initial stand by speed can be adjusted by holding the accelerator to the desired engine speed then pressing and releasing the...

Page 71: ...increase the engine speed by increments of 100 rpm ACCEL Press and hold the RES position to increase the rpm by 200 rpm per second until the desired engine speed is reached or until the maximum allowable PTO set speed is reached Remote Engine Start Control The vehicle s PTO system allows the engine to be remotely started while operating in the stationary PTO mode The vehicle wiring system provides...

Page 72: ... allows for remote engine shutdown while operating in the stationary PTO mode This feature has the following functions Engine shutdown using the operator remote switch The vehicle wiring system provides remote engine shutdown switch connections which is accessed through the PTO upfitter connector Timed auto engine shutdown The timed auto engine shutdown feature provides the means to shut down the ...

Page 73: ...ventually plug the DPF and result in reduced power The ENGINE POWER IS REDUCED Driver Information Center DIC message and Malfunction Indicator Lamp will be displayed and dealer service will be required to return the vehicle to normal full power operation To prevent this from occurring frequently monitor the vehicle during PTO operation If the DIC message is displayed during PTO operation see Diese...

Page 74: ...ress ON then go to Set 1 Speed DISABLED DISABLED ENABLED Remote Engine Start DISABLED DISABLED ENABLED Remote Engine Shutdown DISABLED DISABLED ENABLED Load feedback DISABLED DISABLED ENABLED Engage Relay DISABLED DISABLED ENABLED Keep Relay engage during braking DISABLED DISABLED ENABLED Action after brake is released RETURN TO BASE IDLE RPM RETURN TO BASE IDLE RPM RETURN TO STANDBY RPM Auto Engi...

Page 75: ...hours Min PTO Engage Speed 500 RPM 500 RPM 1800 RPM Max PTO Engine Speed 1800 RPM 950 RPM 3100 RPM PTO Standby RPM 850 RPM 500 RPM Normal engine idle will override if higher than Standby Speed 3100 RPM PTO Set Speed 1 1250 RPM 500 RPM PTO Set Speed 1 cannot be set below PTO Standby speed 3100 RPM PTO Set Speed 2 1700 RPM 500 RPM PTO Set Speed 2 cannot be set below PTO Standby speed 3100 RPM Maximu...

Page 76: ... Voltage 1 66 V SET_SPEED 1 STANDBY SPEED SET SPEED_1 or SET SPEED_2 Remote Set Switch Transition to Open State 1 66 V 3 33 V PTO_STANDBY STANDBY SPEED SET SPEED_1 or SET SPEED_2 Remote Set Switch Transition to High Voltage 3 33 V SET_SPEED 2 STANDBY SPEED SET SPEED_1 or SET SPEED_2 If the PTO factory preset parameters do not match the settings described above then they may have already been alter...

Page 77: ...ntrol Function Check 10 27 Ignition Transmission Lock Check 10 27 Park Brake and P Park Mechanism Check 10 27 Electrical System Engine Compartment Fuse Block 10 28 General Information Accessories and Modifications Adding non dealer accessories or making modifications to the vehicle can affect vehicle performance and safety including such things as airbags braking stability ride and handling emissi...

Page 78: ... complement and function with other systems on the vehicle Your GM dealer can accessorize the vehicle using genuine GM Accessories When you go to your GM dealer and ask for GM Accessories you will know that GM trained and supported service technicians will perform the work using genuine GM Accessories See your vehicle s Warranty booklet for more information Aftermarket Engine Performance Enhanceme...

Page 79: ...ading durability and performance in the most demanding applications Engine power enhancement products may enable the engine to operate at horsepower and torque levels that could damage create failure or reduce the life of the engine engine emission system transmission and drivetrain Damage failure or reduced life of the engine transmission emission system drivetrain or other vehicle components cau...

Page 80: ...Black plate 4 1 DURAMAX Diesel Engine LML LGH 2011 10 4 Vehicle Care Vehicle Checks Engine Compartment Overview United States Pickup models Shown Canada Similar ...

Page 81: ...lter E Diesel Exhaust Fluid DEF Fill Tube F Engine Air Cleaner Filter Restriction Indicator If Equipped G Engine Oil Dipstick H Engine Oil Fill Cap I Engine Fan Out of View J Automatic Transmission Dipstick K Power Steering Fluid Reservoir L Brake Fluid Reservoir M Auxiliary Battery N Underhood Fuse Block O Windshield Washer Fluid Reservoir P Remote Negative Terminal ...

Page 82: ...Black plate 6 1 DURAMAX Diesel Engine LML LGH 2011 10 6 Vehicle Care United States Van models Shown Canada Similar ...

Page 83: ...ngine Oil and When to Add Engine Oil in this section Change the engine oil at the appropriate time See Engine Oil Life System on page 10 10 Always dispose of engine oil properly See What to Do with Used Oil in this section Checking Engine Oil It is a good idea to check the engine oil level at each fuel fill In order to get an accurate reading the oil must be warm at normal operating temperature an...

Page 84: ...l level gets above the cross hatched area that shows the proper operating range the engine could be damaged You should drain out the excess oil or limit driving of the vehicle and seek a service professional to remove the excess amount of oil See Engine Compartment Overview on page 10 4 for the location of the engine oil fill cap Be sure to add enough oil to put the level somewhere in the proper o...

Page 85: ...Flushes Do not add anything to the oil The recommended oils with the API service symbol are all that is needed for good performance and engine protection Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty What to Do with Used Oil Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer Do ...

Page 86: ... the system must be reset Your dealer has trained service people who will perform this work and reset the system It is also important to check the oil regularly over the course of an oil drain interval and keep it at the proper level If the system is ever reset accidentally the oil must be changed at 5 000 km 3 000 mi since the last oil change Remember to reset the oil life system whenever the oil...

Page 87: ...on fluid listed in Recommended Fluids and Lubricants on page 11 8 How to Check Because this operation can be a little difficult the decision may be made to have this done at the dealership service department If the decision is made to perform this operation be sure to follow all the instructions here or a false reading on the dipstick could result Notice Too much or too little fluid can damage the...

Page 88: ...r the center of the engine compartment See Engine Compartment Overview on page 10 4 for more information on location 2 Push it back in all the way wait 3 seconds and then pull it back out again 3 Check the fluid level reading Repeat the check procedure to verify the reading 4 If the fluid level is within the COLD CHECK band the transmission may be operated until the fluid is hot enough to perform ...

Page 89: ...minimum ambient temperatures are below 40 C 40 F Refer to the Maintenance Schedule to determine what kind of transmission fluid to use See Recommended Fluids and Lubricants on page 11 8 Add fluid only after checking the transmission fluid while it is hot A cold check is used only as a reference If the fluid level is low add only enough of the proper fluid to bring the level up to the HOT area for ...

Page 90: ...mal operating temperature which is 82 C to 93 C 180 F to 200 F Get the vehicle warmed up by driving about 24 km 15 miles when outside temperatures are above 10 C 50 F If it is colder than 10 C 50 F drive the vehicle until the engine temperature gauge moves and then remains steady for 10 minutes A cold check can be made after the vehicle has been sitting for eight hours or more with the engine off ...

Page 91: ...heck or in the HOT or cross hatched area for a hot check Be sure to keep the dipstick pointed down to get an accurate reading 3 If the fluid level is in the acceptable range push the dipstick in all the way then flip the handle down to lock the dipstick in place What Transmission Fluid to Use Allison Transmission Only Cold Operation When temperatures are very cold the transmission will prevent cer...

Page 92: ... fluid to use See Recommended Fluids and Lubricants on page 11 8 Using a funnel add fluid down the transmission dipstick tube only after checking the transmission fluid while it is hot A cold check is used only as a reference If the fluid level is low add only enough of the proper fluid to bring the level up to the HOT area for a hot check It does not take much fluid generally less than 0 5 L 1 pi...

Page 93: ...ce the filter if necessary How to Inspect When the restriction indicator turns black or is in the red orange change zone replace the filter and reset the restriction indicator The air cleaner filter assembly is located on the front corner of the engine compartment on the passenger s side of the vehicle To inspect and replace the filter and reset the restriction indicator A Clamp B Cover Electrical...

Page 94: ...the indicator See Scheduled Maintenance on page 11 2 to determine when to replace the engine air cleaner filter WARNING 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 Use caution when working on the engine and do not drive with the air cleaner filter off Notice If the ...

Page 95: ...lean the filter sealing surface and the housing 4 Install the new engine air cleaner filter 5 Reinstall the cover and tighten the screws 6 Reset the air cleaner filter restriction indicator B if equipped by pressing the top button on the indicator See Scheduled Maintenance on page 11 2 to determine when to replace the engine air cleaner filter WARNING Operating the engine with the air cleaner filt...

Page 96: ...ngine Cooling Fan Out of View Van Models A Coolant Surge Tank B Coolant Surge Tank Pressure Cap C Engine Cooling Fan Out of View WARNING 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 Get any...

Page 97: ...ended life coolant The following explains the cooling system and how to add coolant when it is low If there is a problem with engine overheating see Engine Overheating on page 10 25 A 50 50 mixture of clean drinkable water and DEX COOL coolant will Give freezing protection down to 37 C 34 F Give boiling protection up to 129 C 265 F Protect against rust and corrosion Help keep the proper engine tem...

Page 98: ... not be covered by the vehicle warranty Too much water in the mixture can freeze and crack the engine radiator heater core and other parts If coolant has to be added more than four times a year have the dealer check the vehicle cooling system Notice If you use extra inhibitors and or additives in your vehicle s cooling system you could damage your vehicle Use only the proper mixture of the engine ...

Page 99: ...olant level should be between the MIN and MAX marks Checking Coolant Van Models The surge tank is located near the center of the engine compartment See Engine Compartment Overview on page 10 4 for more information on its location WARNING Turning the surge tank pressure cap when the engine and radiator are hot can allow steam and scalding liquids to blow out and burn you badly Never turn the surge ...

Page 100: ...e tank pressure cap is hot Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap If no coolant is visible in the surge tank add coolant as follows 1 Remove the coolant surge tank pressure cap when the cooling system including the coolant surge tank pressure cap and upper radiator hose is no longer hot Turn the pressure cap slowly counterc...

Page 101: ...ne 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 open the hood If you keep driving when the engine is overheated the liquids in it can catch fire You or others could be badly burned Stop the engine if it overheats and get out of the vehicle until the engine is cool Notic...

Page 102: ...ay If there is still no sign of steam and the vehicle is equipped with an engine driven cooling fan push down the accelerator until the engine speed is about twice as fast as normal idle speed for at least five minutes while the vehicle is parked If the warning is still there turn off the engine and get everyone out of the vehicle until it cools down The decision may be made not to lift the hood b...

Page 103: ...ition Transmission Lock Check While parked and with the parking brake set try to turn the ignition to LOCK OFF in each shift lever position The ignition should turn to LOCK OFF only when the shift lever is in P Park The ignition key should come out only in LOCK OFF Contact your dealer if service is required Park Brake and P Park Mechanism Check WARNING When you are doing this check the vehicle cou...

Page 104: ...ing brake followed by the regular brake Contact your dealer if service is required Electrical System Engine Compartment Fuse Block Pickup Models The underhood fuse block is located in the engine compartment on the driver side of the vehicle Lift the cover to access the fuse block For vans equipped with a Duramax engine see Engine Compartment Fuse Block in the vehicle owner manual ...

Page 105: ...sion Control Module Battery 8 Anti lock Brakes System 2 Fuses Usage 9 Trailer Back up Lamps 10 Left Low Beam Headlamp 11 Engine Control Module Battery 12 Diesel Electronic Control Module 13 Transmission Ignition 1 14 Vehicle Back up Lamps 15 Right Low Beam Headlamp 16 Air Conditioning Compressor 17 Electronic Control Module Throttle Control 18 Fuel Pump Fuses Usage 19 Integrated Trailer Brake Cont...

Page 106: ...ment Panel Cluster 44 Power Take Off 45 Auxiliary Climate Control Ignition Compass and Temperature Mirror 46 Center High Mounted Stoplamp CHMSL 47 Rear Defogger 48 Heated Mirrors 49 SEO B1 Upfitter Usage Battery 50 Cigarette Lighter Auxiliary Power Outlet 51 Automatic Level Control Compressor Relay SEO Upfitter Usage Fuses Usage 52 Climate Controls Ignition 53 Engine Control Module Secondary Fuel ...

Page 107: ...tor Battery Power 64 Mid Bussed Electrical Center 1 65 Climate Control Blower 66 Tailgate Open Close Assist 67 Left Bussed Electrical Center 2 Relays Usage FAN RLY Fan Relay HDLP LO HID Low Beam Headlamp FOG LAMP Front Fog Lamps A C CMPRSR Air Conditioning Compressor STRTR Starter PWR TRN Powertrain FUEL PMP Fuel Pump Relays Usage PRK LAMP Parking Lamps REAR DEFOG Rear Defogger RUN CRNK Switched P...

Page 108: ...Black plate 32 1 DURAMAX Diesel Engine LML LGH 2011 10 32 Vehicle Care 2 NOTES ...

Page 109: ...by failure to follow scheduled maintenance might not be covered by the vehicle warranty Proper vehicle maintenance helps to keep the vehicle in good working condition improves fuel economy and reduces vehicle emissions for better air quality Because of all the different ways people use vehicles maintenance needs vary The vehicle might need more frequent checks and services Please read the informat...

Page 110: ...ment parts fluids and lubricants to use are listed in Recommended Fluids and Lubricants on page 11 8 and Maintenance Replacement Parts on page 11 11 We recommend the use of genuine parts from your dealer Rotation of New Tires To maintain ride handling and performance of the vehicle it is important that the first rotation service for new tires be performed Tires should be rotated every 12 000 km 7 ...

Page 111: ...ng or contamination and windshield and wiper blade cleaning if contaminated See Exterior Care in the owner manual Worn or damaged wiper blade replacement See Wiper Blade Replacement in the owner manual Tire inflation pressures check See Tire Pressure in the owner manual Tire wear inspection See Tire Inspection in the owner manual Rotate tires if necessary See Tire Rotation in the owner manual Flui...

Page 112: ...er seal better and not stick or squeak Restraint system component check See Safety System Check in the owner manual Fuel system inspection for damage or leaks Exhaust system including DPF pressure lines and nearby heat shields inspection for loose or damaged components Check to be sure that mud or dirt is not caked on the exhaust system especially in the area of the diesel particulate filter and t...

Page 113: ...heels Check dual wheel nut torque For proper torque see Capacities and Specifications in the owner manual Every 12 000 km 7 500 Miles Rotate tires Tires should be rotated every 12 000 km 7 500 miles See Tire Rotation in the owner manual At Each Fuel Stop Engine oil level check See Engine Oil on page 10 7 Engine coolant level check See Engine Coolant on page 10 21 Windshield washer fluid level chec...

Page 114: ...Resources DNR and snow plowing occupations meet this definition Check vent hose at transfer case for kinks and proper installation Check to be sure vent hose is unobstructed clear and free of debris During any maintenance if a power washer is used to clean mud and dirt from the underbody care should be taken to not directly spray the transfer case output seals High pressure water can overcome the ...

Page 115: ...s Automatic transmission fluid and filter change normal service See Automatic Transmission Fluid on page 10 11 Four wheel drive pickup models only Transfer case fluid change normal service Check vent hose at transfer case for kinks and proper installation Check to be sure vent hose is unobstructed clear and free of debris During any maintenance if a power washer is used to clean mud and dirt from ...

Page 116: ...viscosity for your vehicle s diesel engine see Engine Oil on page 10 7 Engine Coolant 50 50 mixture of clean drinkable water and use only DEX COOL Coolant See Engine Coolant on page 10 21 Hydraulic Brake System DOT 3 Hydraulic Brake Fluid GM Part No 12377967 in Canada 89021320 Diesel Exhaust Aftertreatment System Diesel Exhaust Fluid GM Part No 88862659 in Canada 88862660 or diesel exhaust fluid t...

Page 117: ...ubricant meeting requirements of NLGI 2 Category LB or GC LB Chassis Lubrication Chassis Lubricant GM Part No 12377985 in Canada 88901242 or lubricant meeting requirements of NLGI 2 Category LB or GC LB Van Models Front Wheel Bearings Wheel bearing lubricant meeting requirements of NLGI 2 Category GC or GC LB GM Part No 1051344 in Canada 993037 Front and Rear Axle SAE 75W 90 Synthetic Axle Lubrica...

Page 118: ... Models Body Door Hinge Pins Tailgate Hinge and Linkage Folding Seats and Fuel Door Hinge Multi Purpose Lubricant Superlube GM Part No 12346241 in Canada 10953474 Pickup Models Tailgate Handle Pivot Points Hinges Latch Bolt and Linkage Multi Purpose Lubricant Superlube GM Part No 12346241 in Canada 10953474 Weatherstrip Conditioning Weatherstrip Lubricant GM Part No 3634770 in Canada 10953518 or D...

Page 119: ...obtained from your dealer Part GM Part Number ACDelco Part Number Engine Air Cleaner Filter Pickup Models 25945274 A3141C Van Models 20815924 A3140C Engine Fuel Filter Pickup Models 12633243 TP3012 Van Models Primary and Secondary Filter Kit 19256348 TP3013 Engine Oil Filter 88917036 PF2232 Use only the specified filters Racor service kit includes primary filter secondary filter and o rings ...

Page 120: ... Maintenance Records After the scheduled services are performed record the date odometer reading who performed the service and the type of services performed in the boxes provided Retain all maintenance receipts Maintenance Record Date Odometer Reading Serviced By Services Performed ...

Page 121: ...Black plate 13 1 DURAMAX Diesel Engine LML LGH 2011 Service and Maintenance 11 13 Maintenance Record cont Date Odometer Reading Serviced By Services Performed ...

Page 122: ...Black plate 14 1 DURAMAX Diesel Engine LML LGH 2011 11 14 Service and Maintenance Maintenance Record cont Date Odometer Reading Serviced By Services Performed ...

Page 123: ...Black plate 1 1 DURAMAX Diesel Engine LML LGH 2011 Technical Data 12 1 Technical Data Vehicle Data Capacities and Specifications 12 2 Engine Drive Belt Routing 12 4 ...

Page 124: ...information Application Capacities Metric English Cooling System Pickup Models 27 0 L 28 5 qt Cooling System Van Models Front Heat or AC Only 20 0 L 21 2 qt Front Heat or AC Plus Fuel Operated Heater FOH 20 9 L 22 1 qt Front and Rear Heat or AC Only 21 5 L 22 7 qt Front and Rear Heat or AC Plus Fuel Operated Heater FOH 22 4 L 23 7 qt Diesel Exhaust Fluid DEF Tank Pickup Models 20 1 L 5 3 gal Van M...

Page 125: ...Speed Transmission Allison 7 0 L 7 4 qt Do not overfill the DEF tank See Diesel Exhaust Fluid on page 9 12 All quantities are approximate When adding be sure to fill to the appropriate level as recommended in this manual Recheck fluid level after filling Engine Specifications Engine VIN Code Type 6 6L V8 Turbo Diesel LGH Engine L V8 6 6L V8 Turbo Diesel LML Engine 8 V8 ...

Page 126: ...Black plate 4 1 DURAMAX Diesel Engine LML LGH 2011 12 4 Technical Data Engine Drive Belt Routing ...

Page 127: ... 5 D Diesel Starting Your Engine 9 1 Diesel Exhaust Fluid 1 5 9 12 Diesel Exhaust Fluid DEF Warning Light 5 9 Diesel Exhaust Fluid Messages 5 11 Diesel Particulate Filter 9 10 Diesel Particulate Filter Messages 5 12 Driver Information Center DIC 5 10 E Electrical System Engine Compartment Fuse Block 10 28 Engine Air Cleaner Filter 10 17 Check and Service Engine Soon Light 5 6 Compartment Overview ...

Page 128: ...30 System Messages 5 11 Fuel cont Water in Fuel 9 26 What to Use in Canada and Mexico 9 22 What to Use in the U S 9 17 Fuel for Diesel Engines 9 16 Fuses Engine Compartment Fuse Block 10 28 G Gauges Engine Oil Pressure 5 5 Fuel 5 4 General Information Service and Maintenance 11 1 H Heater Engine 9 9 Fuel Operated 9 10 I Ignition Transmission Lock Check 10 27 Instrument Cluster 5 2 Introduction ii ...

Page 129: ...hanism Check 10 27 Over Things That Burn 9 10 Personalization Vehicle 5 14 Power Take Off PTO 9 39 R Recommended Fluids and Lubricants 11 8 Records Maintenance 11 12 Replacement Parts Maintenance 11 11 Routing Engine Drive Belt 12 4 Running Out of Fuel 9 30 S Scheduled Maintenance 11 2 Service Accessories and Modifications 10 1 Engine Soon Light 5 6 Maintenance Records 11 12 Maintenance General In...

Page 130: ... Automatic 10 11 Messages 5 13 U Using this Supplement iii V Vehicle Canadian Owners ii Messages 5 10 Personalization 5 14 Speed Messages 5 13 W Wait to Start Light 5 9 Warning Light Diesel Exhaust Fluid DEF 5 9 Water in Fuel 9 26 What Fuel to Use in Canada and Mexico 9 22 What Fuel to Use in the U S 9 17 Winter Cover 9 5 ...

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