GMC 2.8L Duramax Diesel 2020 Manual
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GMC 2.8L Duramax Diesel 2020 Manual

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March 3, 2025

2.8 duramax engine balancing shafts timing

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Summary of Contents for GMC 2.8L Duramax Diesel 2020

  • Page 2: Table Of Contents

    Contents Introduction ..... . 2 Instruments and Controls ..5 Driving and Operating ..16 Vehicle Care .

  • Page 3: Introduction

    Refer to the purchase to, GM, the GM logo, CHEVROLET, documentation relating to your On peut obtenir un exemplaire de GMC, the CHEVROLET and GMC specific vehicle to confirm the ce guide en français auprès du Truck Emblems, COLORADO, features.
  • Page 4 Introduction Index A good place to look for what you need is the Index in the 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 5 Introduction NOTES...

  • Page 6: Instruments And Controls

    Instruments and Controls Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster ....6 Fuel Gauge ..... 9 Engine Oil Pressure Gauge .

  • Page 7: Instrument Cluster

    Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster English Base Level 4-Cylinder Pickup Shown, Metric Similar...
  • Page 8 Instruments and Controls English Uplevel 4-Cylinder Pickup Shown, Metric Similar...
  • Page 9 Instruments and Controls English Van Shown, Metric Similar...

  • Page 10: 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 Van Models Pickup Shown, Uplevel Similar When the ignition is on, the fuel gauge shows approximately how much fuel the vehicle has left in the tank.

  • Page 11: Engine Oil Pressure Gauge

    Instruments and Controls It takes a little more or less fuel Caution to fill up than the fuel gauge indicated. For example, the Lack of proper engine oil gauge may have indicated the maintenance can damage the tank was half full, but it actually engine.

  • Page 12: 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 Modifications to the engine, oil pressure warning light on or an transmission, exhaust, intake, ENGINE OIL LOW ADD OIL or fuel system, or the use of message displayed.

  • Page 13: Wait-To-Start Light

    Instruments and Controls If the light remains on, see your The vehicle may not pass Wait-to-Start Light dealer. inspection if: The light is on when the engine Emissions Inspection and is running. Maintenance Programs The light does not come on If the vehicle requires an Emissions when the ignition is on with the Inspection/Maintenance test, the...

  • Page 14: Diesel Exhaust Fluid (Def)

    Instruments and Controls Diesel Exhaust Fluid Power Take-Off Light Information Displays (DEF) Warning Light (Chassis Cab Only) Driver Information Center (DIC) The DIC is in the instrument cluster. The DIC comes on when the ignition is on. A Duramax diesel vehicle may have Chassis Cab the following additional DIC menu This light, a Driver Information...

  • Page 15: Vehicle Personalization Vehicle Personalization

    Instruments and Controls When the remaining fuel filter life is Vehicle Press until ELEVATED IDLE low, the CHANGE FUEL FILTER appears on the DIC display. Personalization message will appear on the display. Press once to access the settings Change the fuel filter as soon as for this feature.
  • Page 16 Instruments and Controls To access the vehicle personalization menu: 1. Touch the Settings icon on the Home Page of the infotainment display. 2. Touch Vehicle to display a list of available options. 3. Touch to select the desired feature setting. 4.

  • Page 17: Driving And Operating

    Driving and Operating Driving and Fuel Filter Replacement ..38 Starting and Filling the Tank ....40 Operating Operating Filling a Portable Fuel Container .
  • Page 18 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 system. if the engine is cold. This protection Do not try to shift to P (Park) if the can last up to a maximum of vehicle is moving.
  • Page 19 Driving and Operating If the vehicle is not out of fuel, and Be sure you are using the proper and engine warmup. These speeds the engine will not start: fuel for existing weather conditions. can range from approximately 600 See Fuel for Diesel Engines 0 32. to 1000 rpm.

  • Page 20: Winter Cover

    Driving and Operating two minutes. For this method to delay, if the conditions for engine The cruise control Cancel switch work properly there must be no coolant temperature and air intake is pressed. throttle or brake pedal faults. temperature are still met. The brake pedal is pressed.
  • Page 21 Driving and Operating For vehicles that did not come with guidelines will allow adequate Use only a mild soap to clean. a winter cover, a GM winter cover airflow for proper radiator and air Do not use harsh soap, strong can be purchased.

  • Page 22: Engine Heater

    Driving and Operating 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. Always park the vehicle in a clear open area away from buildings or structures.
  • Page 23 Driving and Operating 2. Open the hood and unwrap the Warning (Continued) electrical cord. The cord is in the engine compartment, on function. An ungrounded the driver side behind the outlet could cause an battery for pickups, and on the electric shock.

  • Page 24: Fuel Operated Heater (Foh) (Van Models Only)

    Driving and Operating The length of time the heater should Fuel Operated Heater Warning (Continued) remain plugged in depends on the (FOH) (Van Models Only) outside temperature. You may wish vehicle. Possible heater to use the coolant heater to improve cord and thermostat ease of starting at temperatures damage could occur.

  • Page 25: Parking Over Things

    Driving and Operating The FOH will turn on if all of the Diesel Particulate Caution following conditions exist: Filter Outside air temperature is below Damage can occur to the DPF or equal to 4 °C (39 °F). The vehicle has a Diesel Particulate components if the required Ultra Filter (DPF) as part of the exhaust Low Sulfur Diesel (15 ppm sulfur...
  • Page 26 Driving and Operating Extended idling in P (Park) can Warning (Continued) Caution (Continued) cause exhaust parts and gases to become very hot. Keep the exhaust gases are very hot. Things that action. Continued idling with the area clear of material that could burn could touch hot exhaust warning light/message on could ignite or burn.
  • Page 27 Driving and Operating If equipped, this feature allows for If the vehicle cannot be stopped Before starting the manual manual cleaning/regeneration of the when the DIC message first regeneration, make sure all of the DPF when it is unable to clean indicates cleaning is available, following safety conditions are met: itself.

  • Page 28: Diesel Exhaust Fluid

    Driving and Operating the steering wheel control for at again to turn off the exhaust brake, Diesel Exhaust Fluid least one second to select Start on then try again when the DIC the infotainment display. message prompts. Warning Follow the instructions in the DIC When manual regeneration begins, messages.
  • Page 29 Driving and Operating It is normal to hear the DEF system Filling the DEF Tank Caution purge fluid back into the tank after the vehicle is shut off. Do not mix fuel with DEF, and do Locating Diesel Exhaust Fluid not put DEF in the fuel tank.
  • Page 30 Driving and Operating Fill the DEF tank on level ground Push the fuel/DEF door closed. The DEF range DIC message first and with the vehicle off. When displays at approximately 1 600 km DEF Low adding DEF, it is recommended to (1,000 mi).

  • Page 31: Brakes

    Driving and Operating The speed limitation will occur in a persists, see your dealer or Brakes series of steps with the final speed additional DIC messages may limitation being 8 km/h (5 mph) display. Exhaust Brake along with a flashing warning light Service Emission System and chimes.

  • Page 32: Fuel

    Driving and Operating The exhaust brake only activates Fuel when the transmission torque converter is locked. This can vary Top Tier Fuel based on vehicle speed, gear, and load. GM recommends the use of TOP TIER Diesel Fuel to keep the To activate the system, press the engine clean, reduce engine switch on the center stack.

  • Page 33: Fuel Additives

    Driving and Operating Fuel Additives Do not use a diesel blend containing Caution (Continued) more than 20% biodiesel by volume. TOP TIER Detergent Diesel is Diesel-water emulsions, highly recommended for use with Caution such as Aquazole. your vehicle. If your area does not have TOP TIER Detergent Diesel, Aftermarket diesel fuel Use of fuel that does not comply...

  • Page 34: Biodiesel

    Driving and Operating Some conditions, such as dirty fuel, conventional diesel fuel and Caution (Continued) may decrease fuel filter life and a biodiesel blends, but may not CHANGE FUEL FILTER message prevent all cases. or blends of vegetable oil with may come on in the Driver In case of severe winter conditions, diesel.

  • Page 35: Cold Weather Operation

    Driving and Operating As a renewable fuel, biodiesel refueled with biodiesel-free fuel, and weather at temperatures below 0 °C provides some environmental driven several kilometers (miles) (32 °F). Use of No. 1-D diesel fuel benefits. However, biodiesel has before storage. may lower the fuel economy.
  • Page 36 Driving and Operating Water in Fuel Troubleshooting Recommended Caution Problem Action If the WATER IN FUEL SERVICE REQUIRED message comes on: Water in the diesel fuel can Message Drain the fuel corrode internal components of Recommended displays and filter the fuel system and lead to Problem Action stays on.
  • Page 37 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 38 Driving and Operating 2. Place a container under the Fuel Priming Priming the Fuel System filter drain valve. The filter drain There is an electric priming pump For the fuel system to work properly, valve is on the bottom of the that will bring fuel to the engine and the fuel lines must be full of fuel.

  • Page 39: Running Out Of Fuel

    Driving and Operating 7. If the engine starts and runs On van models only, the Fuel Keep the engine off until the but stalls again, turn the Operated Heater (FOH) stops procedure is completed. ignition off for 60 seconds. automatically when the fuel tank 2.
  • Page 40 Driving and Operating 7. Use the fuel filter priming Caution procedure to prime the fuel filter. See Fuel Priming in Failure to cover the fuel filter with Water in Fuel 0 34. a clean cloth to keep out debris 8. Start the engine and let it idle when replacing may cause dirt to for five minutes.

  • Page 41: Filling The Tank

    Driving and Operating 6. Use the fuel filter priming Warning (Continued) Warning (Continued) procedure earlier in this section to prime the fuel filter. Read and follow all the Fuel can spray out if the fuel 7. Start the engine and let it idle instructions on the fuel cap is opened too quickly.

  • Page 42: Filling A Portable Fuel

    Driving and Operating Fluid cap is also behind the fuel removing the fill nozzle. Clean fuel Accidental Refueling with door. Do not remove both caps at from painted surfaces as soon as Gasoline the same time. possible. See Exterior Care 0 87. Caution Turn the fuel cap counterclockwise Reinstall the cap by turning it...

  • Page 43: 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 means. You or others could be steep uphill grades, consider the options.
  • Page 44 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 45 Driving and Operating 2500/3500 Series Van Models Vehicle Axle Ratio Max. Trailer Wt. GCWR * G2500 Cargo Van Short 3.42 3 175 kg (7,000 lb) 5 897 kg (13,000 lb) Wheelbase G2500 Cargo Van Long 3.42 2 767 kg (6,100 lb) 5 897 kg (13,000 lb) Wheelbase G3500 Cargo Van Short...
  • Page 46 Driving and Operating See Trailer Towing in the owner s Trailer rating may be limited by the manual for kingpin weight and trailer vehicle's ability to carry tongue tongue weight information. weight. Tongue or kingpin weight cannot cause the vehicle to exceed Weight of the Trailer Tongue the GVWR (Gross Vehicle Weight Rating) or the RGAWR (Rear Gross...

  • Page 47: Conversions And Add-Ons

    Driving and Operating Conversions and Primary PTO Operating Modes Warning 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 48 Driving and Operating must select one of the two All PTO modes provide for safety relay becomes engaged and modes within the pre-configured interlocks for PTO load will then be on steady. The pairing. If an OSIM mode is not disengagement.
  • Page 49 Driving and Operating 2. Check the correct operation of 2. Set the parking brake and shift Preset Enable Conditions the default PTO preset the transmission into P (Park). Remote Operation In-Cab Enable stationary mode to observe the 3. Turn the engine off. Remove or This requires programming with the three idle up speeds.
  • Page 50 Driving and Operating Preset Enable Conditions cruise control to select the PTO Warning Operator Selectable In-Cab Set 1 speed. Press and release Mode (OSIM) +RES on the cruise control to If the key is in the ignition during select the PTO Set 2 speed. This requires programming with the Remote PTO operation, the GM Service Tool and requires...
  • Page 51 Driving and Operating The PTO Control setting on the relay becomes engaged and 1. Confirm that cruise control Service Tool must be will then be on steady. The is off. programmed to Remote PTO engine will advance to the PTO 2.
  • Page 52 Driving and Operating Variable Enable Conditions The desired engine operating Warning Remote Operation In-Cab Enable speed can now be Starting Remote Operation from accomplished. Two versions of If the key is in the ignition during In-Cab engine rpm control are available, Remote PTO operation, the switches or potentiometer, This requires programming with the...
  • Page 53 Driving and Operating 1. With the engine running, shift Standby Speed (default = 900 value for tap step can be the vehicle into P (Park), rpm) so maximum power is modified via the Radio release the brake pedal, and available. Customization menu.
  • Page 54 Driving and Operating 5. Shift the transmission to M1, 9. Once engaged, if additional that speed. Normal tap up M2, or M3. engine speed is desired, use and tap down can then be either the cruise control or the used to fine tune the setting. 6.
  • Page 55 Driving and Operating PTO System Disengage that a PTO set speed is still the Power Take-Off (PTO) stored in memory. Activating operating description and Conditions +RES on the cruise control will application guide. Preset or Variable Stationary restore engine rpm to the last With the key in the ignition and Modes In-Cab Operation...
  • Page 56 Driving and Operating predefined time. PTO must be When Remote PTO engine starting unless the accelerator pedal is operational for this function to be has been initialized with the ignition pressed. The PTO load relay active. key in the RUN position, the shift remains engaged.
  • Page 57 Driving and Operating PTO indicator light will turn off, Prolonged or Extended PTO on the cruise control is indicating the PTO load relay is Operation pressed. disengaged and the stored set When operating the vehicle in The parking brake is applied. speed has been cleared from stationary PTO mode, the Diesel memory.
  • Page 58 Driving and Operating CLEAN EXHAUST FILTER SEE be adjusted by the GM Service Tool. TAP UP : Press and release +RES OWNER MANUAL NOW DIC The Service Tool can enable the on the cruise control to increase the warning messages. If the DIC option for adjustment of tap down engine speed by increments of 100 message is displayed during PTO...
  • Page 59 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 60 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 61 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Engine Speed Tap Step 100 rpm 4 rpm 500 rpm 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...
  • Page 62 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Standby Speed Menu DISABLED DISABLED ENABLED 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...
  • Page 63 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Driver Door Status Usage ENABLED DISABLED ENABLED Remote PTO In Cab DISABLED DISABLED ENABLED Control If the PTO factory preset Driver Information Center (DIC) PTO: REDUCE VEHICLE parameters do not match the SPEED Warning Messages settings described above, then they...
  • Page 64 Driving and Operating Exhaust Filter Cleaning Diesel Particulate Filter vehicle can be driven above Available Go to Options Menu 50 km/h (30 mph) for about Cleaning during PTO (DPF only) 30 minutes. Operation In addition, the PTO indicator light Manual regeneration can be used This feature is only available on will light when all conditions during a stationary PTO session.

  • Page 65: Vehicle Care

    Vehicle Care Vehicle Care General Information Damage to vehicle components resulting from modifications or the installation or use of non-GM Accessories and certified parts, including control General Information Modifications module or software modifications, is Accessories and not covered under the terms of the Adding non-dealer accessories or Modifications .
  • Page 66 Vehicle Care Aftermarket Engine the engine to operate at horsepower and torque levels that could Performance Enhancement damage, create failure, or reduce Products and Modifications the life of the engine, engine Some aftermarket engine emission system, transmission, and performance products and drivetrain.

  • Page 67: Vehicle Checks

    Vehicle Care Vehicle Checks Engine Compartment Overview 2.8L 4-Cylinder Engine Pickup Models...
  • Page 68 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 69 Vehicle Care 2.8L 4-Cylinder Engine Van Models...

  • Page 70: 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 71 Vehicle Care When to Add Engine Oil Specification Caution (Continued) Ask for and use engine oils that meet the dexos2 specification. above the operating range (i.e., Engine oils that have been the engine has so much oil that approved by GM as meeting the the oil level gets above the dexos2 specification are marked cross-hatched area that shows...
  • Page 72 Vehicle Care will provide easier cold starting for Caution the engine at extremely low temperatures. When selecting an oil Failure to use the recommended of the appropriate viscosity grade, it engine oil or equivalent can result is recommended to select an oil of in engine damage not covered by the correct specification.

  • Page 73: Engine Oil Life System

    Vehicle Care containing used engine oil. See the Automatic Transmission Change the fluid and filter at the manufacturer's warnings about the intervals listed in Maintenance Fluid use and disposal of oil products. Schedule 0 90, and be sure to use the fluid listed in Recommended When to Check and Change Used oil can be a threat to the...
  • Page 74 Vehicle Care How to Inspect the Engine Air 3. Remove the air cleaner/filter Cleaner/Filter from the housing base. Take care to dislodge as little dirt as Do not start the engine or have the possible. engine running with the engine air filter housing open.

  • Page 75: Cooling System

    Vehicle Care See Maintenance Schedule 0 90 to Cooling System 3. Engine Cooling Fan (Out determine when to replace the of View) The cooling system allows the engine air cleaner/filter. engine to maintain the correct Warning working temperature. Warning An underhood electric fan can 2.8L 4-Cylinder Engine Pickup Operating the engine with the air start up even when the engine is...
  • Page 76 Vehicle Care Engine Coolant What to Use Caution The cooling system in the vehicle is Warning filled with DEX-COOL engine Do not use anything other than a coolant mixture. See Recommended mix of DEX-COOL coolant that Plain water, or other liquids such Fluids and Lubricants 0 93 and meets GM Standard as alcohol, can boil before the...
  • Page 77 Vehicle Care Checking Coolant (2.8L 4-Cylinder Adding Coolant (2.8L 4-Cylinder Warning Engine Van Models) Engine Van Models) Steam and scalding liquids from a Caution hot cooling system are under pressure. Turning the pressure If coolant is changed or added, cap, even a little, can cause them always add enough to fill the to come out at high speed and system completely or engine...

  • Page 78: Engine Overheating

    Vehicle Care Turn the pressure cap slowly Be sure the pressure cap is If Steam Is Coming from the counterclockwise about one full hand-tight and fully seated. Engine Compartment turn. If a hiss is heard, wait for 6. Verify coolant level after the that to stop.

  • Page 79: Battery

    Vehicle Care If No Steam Is Coming from pull off the road, shift to Battery (4-Cylinder P (Park) or N (Neutral), and let the Engine Compartment Pickup Only) the engine idle. A Driver Information Center (DIC) Pickups with a 4-cylinder diesel 2.

  • Page 80: Electrical System

    Vehicle Care Electrical System Caution Danger Engine Compartment Spilling liquid on any electrical Fuses and circuit breakers are component on the vehicle may marked with their ampere rating. Fuse Block damage it. Always keep the Do not exceed the For additional fuse and electrical covers on any electrical specified amperage rating when information, see Electrical System...
  • Page 81 Vehicle Care 4-Cylinder Pickup...
  • Page 82 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 airflow Trailer brake Traction control sensor control module module power Starter Rear window Engine control...
  • Page 83 Vehicle Care Fuses Usage Fuses Usage Fuses Usage Rear differential Horn Electric power lock actuators steering Front differential lock actuators/ Battery regulated Selective catalytic voltage control reduction power module wake up Washer pump Glow plug module Generator Fuel heater Mirror defogger Selective catalytic reduction power module heater...
  • Page 84 Vehicle Care Relays Usage Relays Usage Powertrain Selective catalytic reduction power Fuel pump module heater Front differential control/Diesel lock actuators exhaust fluid control Rear differential lock actuators Trailer parking lamps Center high-mounted Run/Crank stoplamp Cooling fan clutch Fuel heater Rear window defogger/Mirror defogger...
  • Page 85 Vehicle Care 4-Cylinder Van...
  • Page 86 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 87 Vehicle Care Fuses Usage Fuses Usage Fuses Usage Starter solenoid O2 sensor 2/EV fan Engine control module, powertrain Engine control signal 3 module, powertrain Mass airflow signal 1 Soot sensor sensor/Canister DC-AC inverter vent/Humidity O2 sensor 1/ECM sensor powertrain signal 2 Cooling fan low Ignition coils/ Engine control...

  • Page 88: Appearance Care

    Vehicle Care Auxiliary Fuse Block Appearance Care Relays Usage MR Rel 1 Fuel filter heater Exterior Care MR Rel 2 Diesel exhaust fluid See the owner s manual for power/Wake up additional exterior care information. Mega Fuse Holder Caution To check the fuse release the yellow clamps on both sides and pull off Water sprayed into or on the air the cover.

  • Page 89: 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 90 Service and Maintenance Are driven on reasonable road Caution (Continued) Warning surfaces within legal driving limits. approved by GM could damage Performing maintenance work can Use the recommended fuel. See the vehicle, requiring expensive be dangerous and can cause Fuel for Diesel Engines 0 32. repairs that are not covered by serious injury.
  • Page 91 Service and Maintenance Maintenance filter must be changed at least once Required Services Every a year and the oil life system must 12 000 km/7,500 mi Schedule be reset. Your trained dealer Check engine oil level and oil technician can perform this work. Owner Checks and Services life percentage.
  • Page 92 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) Drain and fill engine cooling system. (2) Visually inspect accessory drive belts.
  • Page 93 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 94 Service and Maintenance Recommended Fluids, Lubricants, and Parts Recommended Fluids and Lubricants The following fluids apply to vehicles with a Duramax diesel engine. 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. Usage Fluid/Lubricant Automatic Transmission (6 Speed)
  • Page 95 Service and Maintenance Maintenance Replacement Parts Replacement parts identified below by name, part number, or specification can be obtained from your dealer. Part GM Part Number ACDelco Part Number Engine Air Cleaner/Filter 4-Cylinder Pickup 23248945 A3216C 4-Cylinder Van 84000015 A3221C Fuel Filter 4-Cylinder Pickup 52100212...
  • Page 96 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 97: Technical Data

    Technical Data Technical Data Vehicle Data Capacities and Specifications ....97 Engine Drive Belt Routing ..99...
  • Page 98 Technical Data Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants 0 93. Capacities Application Metric English Engine Cooling System (Pickup Models) 2.8L 4-Cylinder Engine 10.5 L 11.1 qt Engine Cooling System (2.8L 4-Cylinder Van Models) Front Heater Core without Fuel Operated Heater (FOH) 13.7 L...
  • Page 99 Technical Data Capacities Application Metric English Engine Oil with Filter 2.8L 4-Cylinder Engine 5.6 L 6.0 qt *Do not overfill the DEF tank. See Diesel Exhaust Fluid 0 27. All quantities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual.
  • Page 100 Technical Data Engine Drive Belt Routing 2.8L 4-Cylinder Engine (Pickup) 2.8L 4-Cylinder Engine (Van)

  • Page 101: Index

    Index Index Accessories and Modifications . . . 64 Diesel Air Cleaner/Filter, Engine ..72 Starting Your Engine ... . 16 Appearance Care Diesel Exhaust Fluid .
  • Page 102 Index Engines Fuses Diesel Fuel ..... 32 Engine Compartment Fuse Maintenance Block ......79 Exhaust Brake .
  • Page 103 Index Replacement Parts Maintenance ....94 Vehicle Routing, Engine Drive Belt ..99 Canadian Owners ....2 Running out of Fuel .

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