GMC Duramax Diesel 2018 Owner's Manual Supplement
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GMC Duramax Diesel 2018 Owner's Manual Supplement

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Duramax Diesel Owner's Manual Supplement

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Summary of Contents for GMC Duramax Diesel 2018

  • Page 1 Duramax Diesel Owner’s Manual Supplement...

  • Page 2: Table Of Contents

    Contents Introduction ..... . 2 In Brief ......5 Instruments and Controls .

  • Page 3: Introduction

    GM, the GM logo, CHEVROLET, that may not be available in your www.helminc.com, or from: GMC, the CHEVROLET and GMC region, or changes subsequent to Truck Emblems, SILVERADO, the printing of this owner s manual.
  • Page 4 Introduction Using this Supplement This supplement contains information specific to the unique components of the vehicle. It does not explain everything you need to know about the vehicle. Read this supplement along with the owner s manual to learn about the vehicle's features and controls.
  • Page 5 Introduction NOTES...

  • Page 6: In Brief

    In Brief In Brief Initial Drive For areas where ambient temperatures are below 40 °C Information ( 40 °F), use synthetic transmission fluid approved to Allison Initial Drive Information Transmission Transmission specification TES-295. Transmission ....5 See Recommended Fluids and Cold Operation (8-Cylinder Pickup Lubricants 0 125 and Automatic...
  • Page 7 In Brief Heater Performance Mode Performance and designed to operate automatically, (8-Cylinder Pickup Models Only) with limited operator involvement or Maintenance awareness. When cold weather conditions are detected, the transmission raises Noise may be heard at low speeds Engine Oil Life System part throttle upshift points after the when the emission controls are 1 (First) to 2 (Second) upshift to...
  • Page 8 Lamp (Check Engine Light) in the DEF can be purchased at a needed by the DPF-equipped instrument cluster, and the DIC will Chevrolet or GMC dealer. It can Duramax diesel. display the message ENGINE also be purchased at authorized In addition: POWER IS REDUCED.
  • Page 9 In Brief ® vehicles with an active OnStar subscription, OnStar can help to locate a DEF retailer. See Customer Assistance Offices in the owner manual for phone numbers to assist you in contacting a GM dealer. See Recommended Fluids and Lubricants 0 125. As the DEF tank becomes low on fluid, warnings begin with approximately 1 600 km (1,000 mi)

  • Page 10: Instruments And Controls

    Instruments and Controls Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster ... . . 10 Fuel Gauge ....16 Engine Oil Pressure Gauge .

  • Page 11: Instrument Cluster

    Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster English Base Level 4-Cylinder Pickup Shown, Metric Similar...
  • Page 12 Instruments and Controls English Uplevel 4-Cylinder Pickup Shown, Metric Similar...
  • Page 13 Instruments and Controls English Base Level 8-Cylinder Pickup Shown, Metric Similar...
  • Page 14 Instruments and Controls English Uplevel 8-Cylinder Pickup Shown, Metric Similar...
  • Page 15 Instruments and Controls English 8-Cylinder Denali Pickup Shown, Metric Similar...
  • Page 16 Instruments and Controls English Van Shown, Metric Similar...

  • Page 17: Fuel Gauge

    Instruments and Controls See the owner s manual for warning lights and gauges not listed in this supplement. Fuel Gauge English Base Level 4-Cylinder English 8-Cylinder Pickup Models Pickup Shown, Uplevel Similar Metric Base Level 4-Cylinder Pickup Shown, Uplevel Similar Metric Van Models Metric 8-Cylinder Pickup Models...

  • Page 18: Engine Oil Pressure Gauge

    Instruments and Controls It takes a little more or less fuel to fill up than the fuel gauge indicated. For example, the gauge may have indicated the tank was half full, but it actually took a little more or less than half the tank's capacity to fill the tank.

  • Page 19: Malfunction Indicator Lamp (Check Engine Light)

    Instruments and Controls pressure message or light comes Caution on, check the oil level immediately. Do not operate the engine with the Lack of proper engine oil oil pressure warning light on or an maintenance can damage the ENGINE OIL LOW ADD OIL engine.
  • Page 20 Instruments and Controls If the light remains on, see your Caution dealer. Modifications to the engine, Emissions Inspection and transmission, exhaust, intake, Maintenance Programs or fuel system, or the use of If the vehicle requires an Emissions replacement tires that do not Inspection/Maintenance test, the Malfunctions are often indicated by meet the original tire...

  • Page 21: Wait-To-Start Light

    Instruments and Controls The vehicle may not pass Wait-to-Start Light Diesel Exhaust Fluid inspection if: (DEF) Warning Light The light is on when the engine is running. The light does not come on when the ignition is on with the engine not running.

  • Page 22: Power Take-Off Light

    Instruments and Controls Power Take-Off Light Information Displays When the remaining fuel filter life is low, the CHANGE FUEL FILTER (Chassis Cab Only) message will appear on the display. Driver Information Change the fuel filter as soon as Center (DIC) possible.

  • Page 23: Vehicle Personalization Vehicle Personalization

    Instruments and Controls Vehicle 4. Turn the MENU knob to scroll Power Take-Off (PTO) (If to Vehicle, then press the Equipped) Personalization MENU knob. There may be additional features 5. Turn the MENU knob to scroll that can be customized for the PTO. Vehicle Personalization to the desired menu, then See Power Take-Off (PTO) 0 65.

  • Page 24: Vehicle Personalization (Van

    Instruments and Controls PTO SET 1 SPEED Turn the MENU knob to the desired A Duramax diesel vehicle may have PTO Tap Step Speed setting. Press the following additional vehicle This feature is available if the the MENU knob to select the personalization items: vehicle is configured for Stationary desired setting.

  • Page 25: Driving And Operating

    Driving and Operating Driving and Fuel Filter Replacement ..54 Starting and Filling the Tank ....55 Operating Operating Filling a Portable Fuel Container .
  • Page 26 Driving and Operating most diesel engines, due to the For turbo protection, engine power Caution rapid heating of the glow plug at speeds above idle may be limited if the engine is cold. This protection system. Do not try to shift to P (Park) if the can last up to a maximum of vehicle is moving.
  • Page 27 Driving and Operating If the vehicle is not out of fuel, and If the engine starts, runs a short Elevated Idle the engine will not start: time, then stops, the vehicle needs The engine has a cold temperature service. Turn the ignition key to ON/RUN. high idle feature which elevates the After the wait-to-start light goes off, engine idle speed from base idle to...

  • Page 28: Winter Cover

    Driving and Operating The engine idle speed will return to Fast Idle Control (Vans and The transmission is shifted out normal once the following conditions of P (Park) or N (Neutral). 8-Cylinder Pickups Only) are met: The parking brake is released. The vehicle may have this system Engine coolant temperature which can be used to increase the...

  • Page 29: Winter Cover

    Driving and Operating When the winter cover is in use, the Keep the underside of the winter heater, ventilation, and air cover as clean as possible. conditioning AUTO mode may not Remove monthly or as function properly. Use the manual necessary and clean away dust settings for comfort.
  • Page 30 Driving and Operating Installation (Chevrolet Pickup) 1. The white label must be at the top and back of the cover. 2. Starting in the middle, attach 3. To remove, reverse the steps fastening points as illustrated. listed previously.

  • Page 31: Models)

    Driving and Operating Installation (GMC Pickup) 1. The white label must be at the top and back of the cover. 2. Starting in the middle, attach Installation (Van Models) fastening points as illustrated. 1. Open the hood and secure it 3.

  • Page 32: Engine Heater

    Driving and Operating 5. To remove the winter cover, reverse the steps listed previously. Engine Heater Warning Do not plug in the engine block heater while the vehicle is parked in a garage or under a carport. Property damage or personal injury may result.
  • Page 33 Driving and Operating your dealer for a replacement. Inspect the cord for damage yearly. 4. Plug it into a normal, grounded 110-volt AC outlet. Warning Improper use of the heater cord or an extension cord can damage the cord and may result in overheating and fire.

  • Page 34: Fuel Operated Heater (Foh) (Van Models Only)

    Driving and Operating 5. Before starting the engine, be Fuel Operated Heater Warning (Continued) sure to unplug and store the (FOH) (Van Models Only) cord as it was before to keep it extension cord, could make away from moving engine parts it overheat and cause a fire, and prevent damage.

  • Page 35: That Burn

    Driving and Operating The FOH will turn on if all of the Diesel Particulate Caution following conditions exist: Filter Outside air temperature is below Permanent damage can occur to or equal to 4 °C (39 °F). The vehicle has a Diesel Particulate the DPF or related components if Filter (DPF) as part of the exhaust the required Ultra Low Sulfur...
  • Page 36 Driving and Operating area clear of material that could Warning (Continued) Caution (Continued) ignite or burn. See Parking over Things That Burn 0 34. burn could touch hot exhaust cause irreversible damage to the If equipped with Power parts under the vehicle and ignite. DPF requiring repair and possible Take-Off (PTO), monitor the You or others could be burned.
  • Page 37 Driving and Operating such as extended slow speed, may take up to four minutes for the The fuel tank is at least stop-and-go traffic, extended idles, system to switch to manual one-eighth full short drive cycles, or stationary PTO regeneration. When the switch All fluids are at the proper level.

  • Page 38: Diesel Exhaust Fluid

    Driving and Operating www.gmupfitter.com to contact the A DIC message will display when Diesel Exhaust Fluid GM Upfitter Integration Group for cleaning has completed. The assistance. message will remain as long as Warning cleaning is not necessary. Cleaning Continue to follow the instructions in could take up to 30 minutes.
  • Page 39 DEF fill is behind the fuel fill door. DEF can be purchased at a For DEF tank capacity see The DEF cap is blue, and the diesel Chevrolet or GMC dealer. It can Capacities and Specifications 0 130. cap is green. also be purchased at authorized vehicle and truck dealerships.
  • Page 40 Driving and Operating condition prevents the filling of a clear. If the vehicle is driven prior to See the following list for DEF tank, place the vehicle in a the DIC message clearing, the approximate volume required to fill warm garage overnight. vehicle speed will still be limited.

  • Page 41: Warning Light

    Driving and Operating For emergency pickups with For emergency pickups with When the mileage countdown is RPO ANM, EXHAUST FLUID RPO ANM, EXHAUST FLUID zero, the DIC message EXHAUST EMPTY REFILL NOW - EMPTY REFILL NOW - SPEED FLUID EMPTY REFILL NOW - 65 534 KM (40,721 MI) UNTIL LIMITED TO 158 KM/H TRANSITIONING TO 8 KM/H...
  • Page 42 Driving and Operating DEF has an expiration date. If the (65 MPH) MAX SPEED displays. TRANSITIONING TO 89 KM/H system detects poor quality, A warning light and a chime also (55 MPH) MAX SPEED displays. or contaminated or diluted DEF, the come on.
  • Page 43 Driving and Operating After the transition to 8 km/h (5 mph) correct the condition. If the DIC SPEED LIMITED TO 65 534 KM is complete, a DIC message message persists, see your dealer (40,721 MI) UNTIL 158 KM/H EXHAUST FLUID QUALITY POOR or additional DIC messages may (98 MPH) MAX SPEED.
  • Page 44 Driving and Operating When the mileage countdown is as driving continues. In some cases When the mileage countdown is zero, the DIC message SERVICE this message will clear itself, zero, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE indicating that the emission system EMISSION SYSTEM - SEE OWNERS MANUAL NOW - was able to correct the condition.

  • Page 45: Exhaust Brake

    Driving and Operating Brakes The exhaust brake only activates The Driver Information Center (DIC) when the transmission torque displays the message EXHAUST converter is locked. This can vary BRAKE ON for approximately Exhaust Brake based on vehicle speed, gear, three seconds, then clears. and load.

  • Page 46: Fuel For Diesel Engines

    Driving and Operating Fuel Caution (Continued) Fuel for Diesel Engines Diesel fuel mixed with engine oil or automatic The selection of a high quality fuel transmission fluid. is important for maintaining optimum Triglyceride fuels, such as performance. Do not use diesel fuel raw vegetable oil or animal with more than 15 ppm sulfur fat, in any form, including...

  • Page 47: The U.s

    Driving and Operating Some conditions, such as dirty fuel, Use diesel fuel that meets ASTM and fuel economy. Avoid using may decrease fuel filter life and a specification D975, Grades No. 2-D No. 1-D diesel fuel in warm or hot CHANGE FUEL FILTER message or No.

  • Page 48: Biodiesel

    Driving and Operating Premium Diesel Fuel Caution Caution If available, premium diesel fuel (FQP-1A) corresponding to the Use of diesel fuel other than Ultra Do not use blends containing Engine Manufacturers Association Low Sulfur Diesel (15 ppm sulfur more than 20% biodiesel. Any (EMA) Recommended Guideline maximum) will cause damage to engine, fuel system, or exhaust...
  • Page 49 Driving and Operating fuel. Storage at hot ambient equipped with a fuel heating system above B5, one of the following temperatures will accelerate to provide a level of protection labels should appear on the biodiesel degradation. against filter plugging from gelling or dispenser: waxing of conventional diesel fuel Owners who use very little fuel,...

  • Page 50: Cold Weather Operation

    Driving and Operating To reduce the risk of poor quality freezing that may affect vehicle fuel, purchase biodiesel blends from starting. You may need to turn the a fuel supplier or fueling station ignition on and off a few times which sells BQ-9000 certified before the vehicle will start.
  • Page 51 Driving and Operating Recommended Warning Caution (Continued) Problem Action Diesel fuel containing water is still If the fuel tank needs to be Message Drain the fuel combustible. You or others could purged to remove water, see your displays and filter be burned.
  • Page 52 Driving and Operating Recommended Caution Problem Action Driving with this message on can Immediately A large amount damage the fuel injection system after refueling, of water is in the and the engine. If the message message fuel tank. Drain comes on right after a refuel, displays and the fuel filter water was pumped into the fuel...
  • Page 53 Driving and Operating 2. Place a container under the engine stalls, the fuel system The system is not harmed by air in filter drain valve. The filter drain may need to be primed. See the fuel lines; however, the engine valve is on the bottom of the Fuel Priming following.

  • Page 54: Running Out Of Fuel

    Driving and Operating 5. Repeat the above steps until 5. After a few attempts, if the Warning (Continued) the engine starts. engine still does not start, see your dealer. 6. If the engine starts, but does any fuel from the air bleed valve, not run smoothly, increase the 4-Cylinder Pickup and Van and wipe up any spilled fuel with...

  • Page 55: Fuel Filter Replacement

    Driving and Operating Fuel Filter Replacement 8. Start the engine and let it idle for five minutes. Check the fuel 8-Cylinder Pickup and 4-Cylinder filter and air bleed valve for Van Models leaks. 9. Reset the fuel filter monitor. Warning See Driver Information Center (DIC) 0 21.

  • Page 56: Filling The Tank

    Driving and Operating 6. Use the fuel filter priming Caution procedure earlier in this section to prime the fuel filter. Failure to cover the fuel filter with 7. Start the engine and let it idle a clean cloth to keep out debris for five minutes.
  • Page 57 Driving and Operating Warning (Continued) Warning Do not leave the fuel pump Overfilling the fuel tank by more unattended. than three clicks of a standard fill nozzle may cause: Do not use a cell phone while refueling. Vehicle performance issues, including engine stalling and Do not re-enter the vehicle damage to the fuel system.

  • Page 58: Filling A Portable Fuel

    Driving and Operating Filling a Portable Fuel Warning Caution Container Heat coming from the engine can If a new fuel cap is needed, be cause the fuel to expand and sure to get the right type of cap Warning force the fuel out of the tank. from your dealer.

  • Page 59: Trailer Towing

    Driving and Operating Trailer Towing Use the following chart to determine Warning (Continued) the maximum the trailer can weigh, When towing at high elevation on based upon your vehicle model and Fill the container no more steep uphill grades, consider the options.
  • Page 60 Driving and Operating 2500/3500 Series Pickup Models SAE J2807 Compliant Vehicle Axle Ratio Max. Trailer Wt. GCWR * C-2500 Pickup Models Pickup Model Double Cab Standard 3.73 7 439 kg (16,400 lb) 11 476 kg (25,300 lb) Pickup Model Crew Cab Standard Box 3.73 6 985 kg (15,400 lb) 11 476 kg (25,300 lb)
  • Page 61 Driving and Operating 2500/3500 Series Pickup Models SAE J2807 Compliant Vehicle Axle Ratio Max. Trailer Wt. GCWR * C-3500 Pickup Model Crew Cab Standard Box Single Rear Wheels 3.73 7 938 kg (17,500 lb) 11 476 kg (25,300 lb) C-3500 Pickup Model Crew Cab Long Box Single Rear Wheels 3.73 7 893 kg (17,400 lb)
  • Page 62 Driving and Operating 2500/3500 Series Pickup Models SAE J2807 Compliant Vehicle Axle Ratio Max. Trailer Wt. GCWR * *The Gross Combination Weight Rating (GCWR) is the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment, and conversions. The GCWR for the vehicle should not be exceeded.
  • Page 63 Driving and Operating Colorado/Canyon Pickup Models SAE J2807 Compliant Vehicle Axle Ratio Max. Trailer Wt. GCWR * Colorado/Canyon Pickup Models 3.42 3 492 kg (7,700 lb) 5 761 kg (12,700 lb) Colorado/Canyon Pickup Models Short Wheelbase Ext. Cab 3.42 3 492 kg (7,700 lb) 5 761 kg (12,700 lb) Short Wheelbase Crew Cab 3.42...
  • Page 64 Driving and Operating 2500/3500 Series Van Models Vehicle Axle Ratio Max. Trailer Wt. GCWR * G2500 Cargo Van Short Wheelbase 3.42 3 084 kg (6,800 lb) 5 897 kg (13,000 lb) G2500 Cargo Van Long Wheelbase 3.42 2 767 kg (6,100 lb) 5 897 kg (13,000 lb) G3500 Cargo Van Short Wheelbase 3.42...
  • Page 65 Driving and Operating Colorado/Canyon Maximum Tongue Vehicle Series Hitch Type Weight 2.8L Diesel Conventional Load 349 kg (770 lb) 4x2 (ALL) 2.8L Diesel SWB Conventional Load 349 kg (770 lb) Ext. Cab 4x4 2.8L Diesel SWB/ Conventional Load 345 kg (760 lb) LWB Crew Cab 4x4 In general, trailer tongue weight (1)

  • Page 66: Conversions And Add-Ons

    Driving and Operating Conversions and Primary PTO Operating Modes Caution Add-Ons PTO modes of operation are: Engine exhaust contains Carbon Preset Monoxide (CO), which cannot be Power Take-Off (PTO) Stationary operation only: In-cab seen or smelled. Exposure to CO control is standard, remote If equipped, the Power Take-Off can cause unconsciousness or control is available.
  • Page 67 Driving and Operating must select one of the two All PTO modes provide for safety will then be on steady. The modes within the pre-configured interlocks for PTO load engine will advance to the PTO pairing. If an OSIM mode is not disengagement.
  • Page 68 Driving and Operating three idle up speeds. The PTO 3. Turn the engine off. Remove or Preset Enable Conditions function should be confirmed place the key in the ignition off Remote Operation In-Cab Enable before any wiring modifications position. Lock the vehicle, This requires programming with the are done or any if desired.
  • Page 69 Driving and Operating Preset Enable Conditions Set 1 speed. Press and release Warning Operator Selectable In-Cab +RES on the cruise control to Mode (OSIM) select the PTO Set 2 speed. If the key is in the ignition during This requires programming with the The PTO load relay engages Remote PTO operation, the GM Service Tool and requires...
  • Page 70 Driving and Operating The PTO Control setting on the 1. Confirm that cruise control relay becomes engaged and Service Tool must be will then be on steady. The is off. programmed to Remote PTO engine will advance to the PTO 2.
  • Page 71 Driving and Operating Variable Enable Conditions switches or potentiometer, Warning (Continued) Remote Operation In-Cab Enable depending on which one was Starting Remote Operation from installed. P (Park) by an unauthorized In-Cab Switches the Remote PTO operator. Even though PTO will This requires programming with the Set and Resume switches can be disengaged, depending on...
  • Page 72 Driving and Operating 3. Confirm the hood is closed. as a verification that the system The PTO load relay is enabled is active and ready to go to a as the factory default 4. Press and release the PTO working speed. programmed setting.
  • Page 73 Driving and Operating 7. Keep the driver door closed. +RES on the cruise control placed in M2 or M3, the vehicle will The driver door can be kept can be used to tap up, or if upshift according to engine rpm set open if reconfigured using the continuously held to ramp point, and vehicle speed will...
  • Page 74 Driving and Operating that a PTO set speed is still disengaged and the stored set Stationary Modes will also stored in memory. Upon speed has been cleared from disengage if: releasing the brake, the factory memory. Vehicle movement is detected. default programming is for the Stationary Modes (Preset or The parking brake is released.
  • Page 75 Driving and Operating Particulate Filter regeneration is P (Park) will not be allowed until one default programming is for the detected by the vehicle system. of the following actions is taken by engine speed to remain at curb If PTO operation is continued the vehicle operator: idle awaiting an input from +RES when critical engine conditions...
  • Page 76 Driving and Operating Mobile Mode will also disengage if: The shift lever is moved out of Prolonged or Extended PTO manual shift selection, M1, Operation PTO feedback input is lost. The M2, or M3. engine speed is returned to the When operating the vehicle in PTO Standby speed setting and Resume memory speed is cleared...
  • Page 77 Driving and Operating OWNER MANUAL NOW DIC down engine speed increments can TAP UP : Press and release +RES warning messages. If the DIC be adjusted by the GM Service Tool. on the cruise control to increase the message is displayed during PTO The Service Tool can enable the engine speed by increments of 100 operation, see Diesel Particulate...
  • Page 78 Driving and Operating Factory Preset Parameters The following table lists the factory preset parameters. These may be altered by the GM Service Tool to configure the various PTO features. Programmable Factory Setting Minimum Value Maximum Value Parameters PTO Option Configuration VEHICLE STATIONARY, VEHICLE STATIONARY, PRESET SPEED...
  • Page 79 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Action after Brake Is RETURN TO BASE RETURN TO BASE RETURN TO Released IDLE rpm IDLE rpm STANDBY rpm Max. vehicle speed may be limited to 64 km/h (40 mph) if this is programmed with the GM Service Tool.
  • Page 80 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Engine Speed Ramp Rate 150 rpm 4 rpm 150 rpm Maximum Vehicle Speed 94 km/h (58 mph) 30 km/h (19 mph) 94 km/h (58 mph) Minimum Remote Potentiometer Threshold Maximum Remote 100% Potentiometer Threshold...
  • Page 81 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Set 1 Speed Menu DISABLED DISABLED ENABLED (In Stationary Preset) Set 2 Speed Menu DISABLED DISABLED ENABLED (In Stationary Preset) Engine Run Shutdown DISABLED DISABLED ENABLED Time Menu (In Stationary Preset) Engine Speed Tap DISABLED DISABLED...
  • Page 82 Driving and Operating If the PTO factory preset PTO: SHIFT TO PARK (P) Exhaust Filter Cleaning parameters do not match the (Stationary mode only) Available Go to Options Menu settings described above, then they (DPF only) PTO: SET PARK BRAKE may have already been altered in (Stationary mode only) In addition, the PTO indicator light...
  • Page 83 Driving and Operating Diesel Particulate Filter Manual regeneration can be used during a stationary PTO session. Cleaning during PTO However, it is strongly Operation recommended that the exhaust filter This feature is only available on be cleaned before continuous PTO. Fleet and Commercial vehicles.

  • Page 84: Vehicle Care

    Vehicle Care Vehicle Care General Information GM Accessories are designed to complement and function with other systems on the vehicle. See your Accessories and dealer to accessorize the vehicle General Information Modifications using genuine GM Accessories Accessories and installed by a dealer technician. Adding non-dealer accessories or Modifications .
  • Page 85 Vehicle Care 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 caused by aftermarket engine performance enhancement products or modifications might not be covered under the vehicle warranty.

  • Page 86: Overview

    Vehicle Care Vehicle Checks Engine Compartment Overview 2.8L 4-Cylinder Engine Pickup Models...
  • Page 87 Vehicle Care 1. Coolant Surge Tank and Pressure Cap 2. Engine Air Cleaner/Filter 3. Engine Oil Fill Cap 4. Engine Fan (Out of View) 5. Engine Oil Dipstick 6. Engine Compartment Fuse Block 7. Brake Fluid Reservoir 8. Windshield Washer Fluid Reservoir 9.
  • Page 88 Vehicle Care 6.6L 8-Cylinder Engine Pickup Models...

  • Page 89: Engine Compartment

    Vehicle Care 1. Battery 2. Engine Air Cleaner/Filter 3. Coolant Surge Tank and Pressure Cap 4. Remote Positive (+) Terminal 5. Diesel Exhaust Fluid (DEF) Fill Tube 6. Engine Fan (Out of View) 7. Automatic Transmission Dipstick 8. Engine Oil Fill Cap 9.
  • Page 90 Vehicle Care 2.8L 4-Cylinder Engine Van Models...

  • Page 91: Engine Oil

    Vehicle Care 1. Battery Check the engine oil level If a low oil Driver Information Center regularly and maintain the (DIC) message displays, check the 2. Coolant Surge Tank and proper oil level. See Checking oil level. Pressure Cap Engine Oil and When to Add Follow these guidelines: 3.
  • Page 92 Vehicle Care When to Add Engine Oil Selecting the Right Engine Oil Caution (2.8L 4-Cylinder Engine) Do not add too much oil. Oil Selecting the right engine oil levels above or below the depends on both the proper oil specification and viscosity grade. acceptable operating range See Recommended Fluids and shown on the dipstick are harmful...
  • Page 93 Vehicle Care will provide easier cold starting for the engine at extremely low temperatures. When selecting an oil of the appropriate viscosity grade, it is recommended to select an oil of the correct specification. See Specification earlier in this section. Caution Engine Oil Additives/Engine Oil Flushes...
  • Page 94 Vehicle Care Selecting the Right Engine Oil American Petroleum Institute (API) Symbol (6.6L 8-Cylinder Engine) This doughnut-shaped logo Specification (symbol) is used on most oil Oils designated as API CJ-4 or containers to help you select the CK-4 are required for the vehicle. correct oil.

  • Page 95: Engine Oil Life System

    Vehicle Care When selecting an oil of the Used oil can be a threat to the When to Check and Change appropriate viscosity grade, always environment. If you change your (6.6L 8-Cylinder Engine Pickup select an oil of the correct own oil, be sure to drain all the oil Models) specification.
  • Page 96 Vehicle Care 3. With a foot on the brake pedal, COLD band if the transmission fluid Caution (Continued) run the engine for at least is below normal operating one minute and shift to D temperatures. system parts, starting a fire. Too (Drive).
  • Page 97 Vehicle Care 5. Perform a hot check at the first 4. Safe operating level is within What Transmission Fluid opportunity after the normal the HOT band on the dipstick. to Use operating temperature of 71 °C The width of the HOT band Cold Operation (160 °F) to 93 °C (200 °F) is represents approximately 1.0 L...
  • Page 98 Vehicle Care How to Add Fluid When the correct fluid level is obtained, push the dipstick back See Recommended Fluids and in all the way. Lubricants 0 125 to determine what kind of transmission fluid to use. When to Check and Change (2.8L 4-Cylinder Engine Van Add fluid only after checking the Models)

  • Page 99: Engine Air Cleaner/Filter

    Vehicle Care Engine Air Cleaner/Filter filter. Lightly tap and shake the engine air filter (away from the 2.8L 4-Cylinder Engine Pickup vehicle) to release dust and dirt. Models Inspect the engine air filter for damage, and replace if damaged. See Engine Air Cleaner/Filter in Do not clean the engine air filter or the owner s manual.
  • Page 100 Vehicle Care 3. Remove the two screws (2) 7. Turn the dust valve clockwise Warning (Continued) from the housing cover. to reinstall. 4. Raise the housing cover. Take 8. Clean the air cleaner/filter backfires. Use caution when care not to move the air sealing surface and the working on the engine and do not cleaner/filter housing base (1),...
  • Page 101 Vehicle Care How to Inspect the Engine Air 1. Screws 6. Reinstall the housing cover by Cleaner/Filter aligning the arrow on top of the 2. Retaining Clips cover to the arrow on top of the 3. Housing Base Do not start the engine or have the housing base, and fasten the 4.

  • Page 102: Cooling System

    Vehicle Care 6.6L 8-Cylinder Engine Pickup 2.8L 4-Cylinder Engine Van Caution Models Models If the air cleaner/filter is off, dirt can easily get into the engine, which could damage it. Always have the air cleaner/filter in place when driving. Cooling System The cooling system allows the engine to maintain the correct working temperature.
  • Page 103 Vehicle Care The cooling system in the vehicle is aluminum parts. If using this Warning filled with DEX-COOL engine mixture, nothing else needs to be coolant mixture. See Recommended added. Do not touch heater or radiator Fluids and Lubricants 0 125 and If coolant has to be added more hoses, or other engine parts.
  • Page 104 Vehicle Care used coolant disposal. This will help The coolant surge tank is divided Checking Coolant (2.8L 4-Cylinder protect the environment and your into two sides. The upper portion Engine Van Models) health. coolant level should be at or above, the bottom of the indicator arrows.
  • Page 105 Vehicle Care If more coolant is needed, add the If no coolant is visible in the surge Warning (Continued) proper dexcool coolant mixture at tank, add coolant as follows: the surge tank, but be careful not to the cap when the cooling system, spill it.

  • Page 106: Engine Overheating

    Vehicle Care 2. Keep turning the pressure cap 6. Verify coolant level after the If Steam Is Coming from the slowly, and remove it. engine is shut off and the Engine Compartment coolant is cold. If necessary, 3. Slowly fill the coolant surge repeat coolant fill procedure tank.

  • Page 107: Battery

    Vehicle Care If No Steam Is Coming from pull off the road, shift to 8-Cylinder Pickup Only P (Park) or N (Neutral), and let the Engine Compartment If the Action Required - Idle Vehicle the engine idle. To Cool Engine DIC message A Driver Information Center (DIC) 2.

  • Page 108: Electrical System

    Vehicle Care Electrical System Danger Engine Compartment Fuses and circuit breakers are marked with their ampere rating. Fuse Block Do not exceed the For additional fuse and electrical specified amperage rating when information, see Electrical System replacing fuses and circuit in the owner s manual.
  • Page 109 Vehicle Care 4-Cylinder Pickup...
  • Page 110 Vehicle Care The vehicle may not be equipped Fuses Usage Fuses Usage with all of the fuses, relays, and Engine control Antilock brake features shown. module-injectors system pump Fuses Usage Mass air flow Trailer brake Traction control sensor control module module power Starter Rear window...
  • Page 111 Vehicle Care Fuses Usage Fuses Usage Fuses Usage Rear differential Battery regulated lock actuators voltage control Front differential lock actuators Washer pump Glow plug module Generator Fuel heater Mirror defogger Selective catalytic reduction power Relays Usage module heater Selective catalytic Air conditioning reduction power Cooling fan clutch...
  • Page 112 Vehicle Care Relays Usage Rear differential lock actuators Center high-mounted stoplamp Fuel heater Selective catalytic reduction power module heater control Trailer parking lamps Run/Crank Cooling fan clutch Rear window defogger/Mirror defogger...
  • Page 113 Vehicle Care 4-Cylinder Van...
  • Page 114 Vehicle Care The vehicle may not be equipped Fuses Usage Fuses Usage with all of the fuses, relays, and Display/Mirrors/ Airbag features shown. Rear vision camera Steering wheel Fuses Usage Washer sensor Antilock brake Horn Engine control system motor module/Glow plug Transmission Antilock brake module/Ignition...
  • Page 115 Vehicle Care Fuses Usage Fuses Usage Fuses Usage EV fan clutch Crankcase vent Lighter/Data link heater connector Starter solenoid O2 sensor 2/EV fan Front blower Engine control module/Powertrain Fuel Injectors AC DC inverter Mass airflow Soot sensor sensor/Canister Cooling fan low O2 sensor 1/ vent/Humidity Cluster...
  • Page 116 Vehicle Care Auxiliary Fuse Block Relays Usage Relays Usage Wipers high MR Rel 1 Fuel filter heater Horn/Washer MR Rel 2 Diesel exhaust fluid power/Wake up Low-beam headlamps Mega Fuse Holder High-beam To check the fuse release the yellow headlamps clamps on both sides and pull off Left trailer the cover.
  • Page 117 Vehicle Care 8-Cylinder Pickup Fuses Usage Trailer battery Antilock brake system pump Instrument panel BEC 1 Passenger motorized seat belt 4WD transfer case electronic control Electric parking brake Instrument panel BEC 2 Driver motorized seat belt Rear window defogger Starter Cooling fan 1 Cooling fan 2 Left trailer stop/...
  • Page 118 Vehicle Care Fuses Usage Fuses Usage Fuses Usage Trailer parking Right parking Engine lamps lamps Fuel injectors Trailer reverse Left parking lamps A odd lamps Upfitter 3 Fuel injectors Right trailer stop/ B even Upfitter 4 Turn lamps Afterboil Upfitter 4 Fuel pump Throttle control Reverse lamps...

  • Page 119: Appearance Care

    Vehicle Care Appearance Care Fuses Usage Relays Usage Transmission Trailer parking Exterior Care control module/ lamps Engine control See the owner s manual for Run/Crank module additional exterior care information. Upfitter 1 Headlamps Fuel pump 2 Caution Electric running Air conditioning boards (if Water sprayed into or on the air control...

  • Page 120: Service And Maintenance

    Service and Maintenance Service and General Information Your dealer recognizes the importance of providing Maintenance This maintenance section applies to competitively priced maintenance vehicles with a diesel engine. For and repair services. With trained gasoline engine vehicles, see the technicians, your dealer is the place maintenance schedule section in for routine maintenance such as oil General Information...
  • Page 121 Service and Maintenance Are driven on reasonable road Caution (Continued) Warning surfaces within legal driving limits. the vehicle, requiring expensive Performing maintenance work can Use the recommended fuel. See repairs that are not covered by be dangerous and can cause Fuel for Diesel Engines 0 45.

  • Page 122: Maintenance Schedule

    Service and Maintenance Maintenance Engine Oil Change Required Services Every 12 000 km/7,500 mi Schedule When the CHANGE ENGINE OIL SOON message displays, have the Check engine oil level and oil engine oil and filter changed within Owner Checks and Services life percentage.
  • Page 123 Service and Maintenance Maintenance Schedule Additional Required Services - Normal Perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Replace engine air cleaner filter. (1) Change automatic transmission fluid and filter. (HD 6-Speed Allison Transmission Only) Change automatic transmission external filter.
  • Page 124 Service and Maintenance Footnotes Maintenance (3) Or every 10 years, whichever Schedule Additional Required comes first. Inspect for fraying, Services - Normal excessive cracking, or damage; replace, if needed. (1) Or every four years, whichever comes first. If driving in dusty (4) Or every two years, or when the conditions, inspect the filter at each CHANGE FUEL FILTER message in...
  • Page 125 Service and Maintenance Maintenance Schedule Additional Required Services - Severe Perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Replace engine air cleaner filter. (1) Change automatic transmission fluid and filter. Drain and fill engine cooling system.
  • Page 126 Service and Maintenance Recommended Fluids, Lubricants, and Parts Recommended Fluids and Lubricants The following fluids apply to vehicles with a Duramax diesel engine and/or an Allison Transmission. For other fluids not listed here, see Recommended Fluids and Lubricants in the owner s manual. Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.
  • Page 127 Service and Maintenance Usage Fluid/Lubricant Engine Oil (6.6L 8-Cylinder Engine) Engine oils with the letters CJ-4 or CK-4 are required for your vehicle. The CJ-4 or CK-4 designation can appear either alone or in combination with other American Petroleum Institute (API) designations, such as API CJ-4/SL.
  • Page 128 Service and Maintenance Part GM Part Number ACDelco Part Number Engine Oil Filter 4-Cylinder Engines (Van) 12677407 PF2267G 4-Cylinder Engines (Truck) 12679114 PF2262G 8-Cylinder Engines 88917036 PF2232 Use only the specified filters.

  • Page 129: Maintenance Records

    Service and Maintenance 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. Odometer Date Serviced By Services Performed Reading...

  • Page 130: Technical Data

    Technical Data Technical Data Vehicle Data Capacities and Specifications ....130 Engine Drive Belt Routing ..132...
  • Page 131 Technical Data Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants 0 125. Capacities Application Metric English Cooling System (Pickup Models) 2.8L 4-Cylinder Engine (LWN) 10.5 L 11.1 qt 6.6L 8-Cylinder Engine (L5P) 29.7 L 31.4 qt...
  • Page 132 Technical Data Capacities Application Metric English Engine Oil with Filter 2.8L 4-Cylinder Engines 5.7 L 6.0 qt 6.6L 8-Cylinder Engines 9.5 L 10.0 qt Transmission Fluid (Pan Removal and Filter Replacement) 2.8L 4-Cylinder Engines 6.3 L 6.7 qt 6.6L 8-Cylinder Engines 7.0 L 7.4 qt *Do not overfill the DEF tank.
  • Page 133 Technical Data Engine Drive Belt Routing 6.6L 8-Cylinder Engine (L5P Single Generator) 2.8L 4-Cylinder Engine (Pickup) 6.6L 8-Cylinder Engine (L5P Dual 2.8L 4-Cylinder Engine (Van) Generator)

  • Page 134: Index

    Index Index Accessories and Modifications . . . 83 Diesel Air Cleaner/Filter, Engine ..98 Starting Your Engine ... . 24 Appearance Care Diesel Exhaust Fluid .
  • Page 135 Index Engines Fuses Diesel Fuel ..... 45 Engine Compartment Fuse Maintenance Exhaust Brake ....44 Block .
  • Page 136 Index Replacement Parts Maintenance ....126 Vehicle Routing, Engine Drive Belt ..132 Canadian Owners ....2 Running out of Fuel .
  • Page 137 23380346 A...

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