20_MUL_3.0L_Duramax_Diesel_Engline_Supplement__COV_en_US_84458629B_2019SEP09.ai 1 9/4/2019 8:32:10 AM
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K Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Contents Introduction ...... 2 Instruments and Controls ...... 5 Driving and Operating ...... 14 Vehicle Care ...... 35 Service and Maintenance ...... 54 Technical Data ...... 64 Index ...... 67 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
2 Introduction Introduction was not purchased on the vehicle, Canadian Vehicle Owners model variants, country The names, logos, emblems, specifications, features/applications A French language manual can be slogans, vehicle model names, and that may not be available in your obtained from your dealer, at vehicle body designs appearing in region, or changes subsequent to www.helminc.com, or from: this manual including, but not limited the printing of this owner’s manual. Propriétaires Canadiens to, GM, the GM logo, CHEVROLET, Refer to the purchase GMC, the CHEVROLET and GMC On peut obtenir un exemplaire de documentation relating to your Truck Emblems, SILVERADO, ce guide en français auprès du specific vehicle to confirm the SIERRA, and Duramax are concessionnaire ou à l'adresse features. trademarks and/or service marks of suivante: General Motors LLC, its This manual contains information Helm, Incorporated subsidiaries, affiliates, or licensors. that pertains to the operation of the Attention: Customer Service diesel engine. It also contains the For vehicles first sold in Canada, 47911 Halyard Drive Diesel Maintenance Schedule. The substitute the name General Plymouth, MI 48170 “ sections in this manual correspond Motors of Canada Company for USA ” to the sections in the owner s GMC and Chevrolet Motor Division ’ manual. This manual, along with the wherever they appear in this owner s manual, will assist you in Using this Supplement manual. ’ the proper use and maintenance of This supplement contains This manual describes features that the vehicle. information specific to the unique may or may not be on the vehicle Keep this manual in the vehicle for components of the vehicle. It does because of optional equipment that quick reference. 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.
Litho in U.S.A. Part No. 84458629 B Second Printing © 2019 General Motors LLC. All Rights Reserved. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Introduction 3 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. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
4 Introduction 2 NOTES Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Instruments and Controls 5 Instruments and Controls
Warning Lights, Gauges, and Indicators Instrument Cluster ...... 6 Malfunction Indicator Lamp (Check Engine Light) ...... 10 Wait-to-Start Light ...... 11 Diesel Exhaust Fluid (DEF) Warning Light ...... 12 Information Displays Driver Information Center (DIC) ...... 12 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
6 Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster
Base Level Chevrolet English Cluster, Metric Similar Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Instruments and Controls 7
Base Level GMC English Cluster, Metric Similar Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
8 Instruments and Controls
Uplevel GMC English Cluster, Metric Similar Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Instruments and Controls 9
Uplevel Chevrolet English Cluster, Metric Similar Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
10 Instruments and Controls Malfunction Indicator Malfunctions are often indicated by the system before any problem is Caution (Continued) Lamp (Check Engine noticeable. Being aware of the light Light) and seeking service promptly when costly repairs not covered by the it comes on may prevent damage. vehicle warranty. This could also This light is part of the vehicle’s affect the vehicle’s ability to pass emission control on-board Caution an Emissions Inspection/ diagnostic system. If this light is on Maintenance test. See while the engine is running, a Accessories and Modifications malfunction has been detected and If the vehicle is driven continually 0 35. the vehicle may require service. The with this light on, the emission light should come on to show that it control system may not work as is working when the ignition is on well, the fuel economy may be When the light is on, a malfunction with the engine not running. See lower, and the vehicle may not has been detected. Diagnosis and “Ignition Positions” in the owner’s run smoothly. This could lead to service may be required. manual. costly repairs that might not be Poor fuel quality can cause This light may also come on when covered by the vehicle warranty. inefficient engine operation and poor the system has detected a problem driveability, which may go away with the Diesel Exhaust Fluid (DEF) once the engine is warmed up. management system. See Diesel Caution If this occurs, change the fuel brand. Exhaust Fluid 0 20. It may require at least one full tank Modifications to the engine, of the proper fuel to turn the light off. 0 transmission, exhaust, intake, See Fuel for Diesel Engines 25. or fuel system, or the use of If the light remains on, see your replacement tires that do not dealer. meet the original tire specifications, can cause this light to come on. This could lead to (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Instruments and Controls 11 Emissions Inspection and The vehicle may not pass Wait-to-Start Light Maintenance Programs inspection if: If the vehicle requires an Emissions . The light is on when the engine Inspection/Maintenance test, the is running. test equipment will likely connect to . The light does not come on the vehicle's Data Link when the ignition is on with the Connector (DLC). engine not running.
. Critical emission control systems This light comes on briefly while have not been completely starting the engine, as a check to diagnosed. If this happens, the show the light is working. vehicle would not be ready for inspection and might require If the wait-to-start light comes on, several days of routine driving the glow plug system is required before the system is ready for and operating. Wait until the light The DLC is under the instrument inspection. This can happen if turns off before starting the engine. panel to the left of the steering the 12-volt battery has recently This light may not come on in warm wheel. Connecting devices that are been replaced or run down, or if temperatures. not used to perform an Emissions the vehicle has recently been See Starting the Diesel Engine 0 14. Inspection/Maintenance test or to serviced. service the vehicle may affect See your dealer if the vehicle will vehicle operation. See “Add-On not pass or cannot be made ready Electrical Equipment” in the owner’s for the test. manual. See your dealer if assistance is needed. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
12 Instruments and Controls Diesel Exhaust Fluid Information Displays to change the fuel filter on a (DEF) Warning Light schedule consistent with your Driver Information driving conditions. When the remaining fuel filter life is Center (DIC) low, the CHANGE FUEL FILTER The DIC is in the instrument cluster. message will appear on the display. The DIC comes on when the ignition Change the fuel filter as soon as is on. possible. A Duramax diesel vehicle may have Fuel Filter Life Reset : Reset the This light, a Driver Information the following additional DIC menu Fuel Filter Life Remaining display Center (DIC) message, and a chime items: after each fuel filter change. It will not reset itself. Also, be careful not come on when there is an issue with DEF : Displays the Diesel Exhaust to reset the display at any time other the Diesel Exhaust Fluid. Fluid (DEF) level as a bar graph than when the fuel filter has just with individual segments that If the DEF level has not been been changed because it cannot be illuminate from Empty (E) to Full (F). corrected, the light will continue to reset accurately until the next fuel When LOW appears on the display flash when the vehicle is started. filter change. The fuel filter life will and the segments turn red, add The vehicle's speed may also be change to 100% when the system DEF as soon as possible. For a limited. has been reset. To reset the system, guide on how much DEF to add, Also see Diesel Exhaust Fluid 0 20. press and hold the thumbwheel for see Diesel Exhaust Fluid 0 20. two seconds while Fuel Filter Life Fuel Filter Life Remaining : This Remaining is displayed on the DIC. display shows an estimate of the Engine Air Filter Life : Displays an fuel filter's remaining useful life. estimate of the engine air filter s If 90% Fuel Filter Life Remaining is ’ remaining useful life and the state of displayed, it means 90% of the the system. Engine Air Filter Life current fuel filter life remains. The 95% means 95% of the current air fuel filter life system will alert when filter life remains. Messages will display based on the engine air filter Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Instruments and Controls 13 life and the state of the system. When the REPLACE AT NEXT OIL CHANGE message displays, the engine air filter should be replaced at the time of the next oil change. When the REPLACE SOON message displays, the engine air filter should be replaced at the earliest convenience. The Air Filter Life display must be reset after the engine air filter replacement. To reset, see Engine Air Filter Life System 0 41. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
14 Driving and Operating Fuel Filter Replacement ...... 31 Starting and Driving and Filling the Tank ...... 31 Operating Filling a Portable Fuel Operating Container ...... 34 Trailer Towing Starting the Diesel Starting and Operating Trailer Towing ...... 34 Engine Starting the Diesel Engine . . . . . 14 Engine Heater ...... 16 The diesel engine starts differently than a gasoline engine. Diesel Particulate Filter Move the shift lever to P (Park) or Diesel Particulate Filter ...... 17 N (Neutral). To restart the engine Diesel Exhaust Fluid when the vehicle is already moving, Diesel Exhaust Fluid ...... 20 use N (Neutral) only.
Brakes Caution Exhaust Brake ...... 24 Fuel Do not try to shift to P (Park) if the Top Tier Fuel ...... 24 vehicle is moving. If you do, you Fuel Additives ...... 25 could damage the transmission. Fuel for Diesel Engines ...... 25 Shift to P (Park) only when the Biodiesel ...... 26 vehicle is stopped. Cold Weather Operation ...... 27 Water in Fuel ...... 27 Starting the Engine Running Out of Fuel ...... 30 1. Place your foot on the brake and press ENGINE START/STOP. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 15 Observe the wait-to-start light. one minute for the cranking If you experience longer cranking See Wait-to-Start Light 0 11. motor to cool, then try the times, notice an unusual amount of This light may not come on if same steps again. exhaust smoke, or are at higher the engine is warm. If you are trying to start the engine elevations (over 2 135 m or 7,000 ft), 2. The wait-to-start light may be after you have run out of fuel, follow you may use the engine heater. See illuminated, depending on the steps in Running Out of Fuel “Engine Heater” in the owner’s temperature conditions. There 0 30. manual. 0 will be a delay in engine When the engine is cold, let it run See Fuel for Diesel Engines 25 for cranking after pressing for a few minutes before driving. information on what fuel to use in ENGINE START/STOP based This lets oil pressure build up. The cold weather. on temperature conditions. In engine will sound louder when it If the Diesel Engine Will Not extremely cold temperatures is cold. the delay will be longer. At the Start end of the delay the engine will For turbo protection, engine power If the vehicle runs out of fuel, see begin to crank and will continue at speeds above idle may be limited Running Out of Fuel 0 30. to crank until the engine starts. if the engine is cold. This protection can last up to a maximum of If the vehicle is not out of fuel, and the engine will not start: Caution 40 seconds at extreme cold coolant and ambient temperatures. Place your foot on the brake and If the wait-to-start light stays on Cold Weather Starting press ENGINE START/STOP. after starting the vehicle, the If the wait-to-start light does not go Use the recommended engine oil vehicle may not run properly. off, wait a few seconds, then try when the outside temperature Have the vehicle serviced starting the engine again. See your drops below freezing. See Engine right away. dealer as soon as possible for a Oil 0 38. When the outside starting system check. temperature drops below –18 °C 3. If the engine does not start (0 °F), use of the engine coolant after 15 seconds of cranking, heater is recommended. turn the ignition off. Wait Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
16 Driving and Operating If the wait-to-start light comes on Engine Heater and then goes off and you know the { Warning battery is charged, but the engine still will not start, the vehicle needs Do not use gasoline or starting { Warning service. aids, such as ether, in the air intake. They could damage the Do not plug in the engine block If the wait-to-start light does not engine, which may not be heater while the vehicle is parked come on when the engine is cold, covered by the vehicle warranty. in a garage or under a carport. the vehicle needs service. They could also cause a fire, Property damage or personal If the battery does not have enough which could cause serious injury may result. Always park the charge to start the engine, see personal injury. vehicle in a clear open area away “Battery” in the owner’s manual. from buildings or structures. Check that the correct engine oil Engine Idle Variations has been used and changed at If equipped, the engine heater can appropriate intervals. If the wrong oil Under certain conditions the engine provide easier starting in cold is used, the engine may be harder idle speed can vary or be elevated. weather conditions at or below to start. Change in idle speed is normal and −18 °C (0 °F). does not indicate a problem. Normal Be sure to use the proper fuel for conditions that can raise idle speed For engine heater operation, see existing weather conditions. See are low voltage, DPF regeneration, “Engine Heater” in the owner’s 0 Fuel for Diesel Engines 25. air conditioning compressor loads, manual. If the engine starts, runs a short and engine warmup. These speeds time, then stops, the vehicle needs can range from approximately 600 service. to 1000 rpm. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 17 Diesel Particulate Vehicles with the DPF have specific fuel and engine oil { Warning Filter requirements. See Fuel for Diesel Engines 0 25 and During DPF self cleaning or The exhaust system has a Diesel Engine Oil 0 38. during extended idling in P (Park), Particulate Filter (DPF) to reduce the exhaust system and exhaust vehicle emissions. On some Caution gases are very hot. Things that exhaust systems with a DPF, the burn could touch hot exhaust exhaust cooler mixes air with the Damage can occur to the DPF parts under the vehicle and ignite. exhaust to lower the temperature You or others could be burned. before it leaves the tailpipe. components if the required Ultra Low Sulfur Diesel (15 ppm sulfur Do not park, or idle for an The DPF, the tailpipe, and other maximum) fuel and either CJ-4 or extended period of time, near or exhaust system components must CK-4 engine oil are not used. over papers, leaves, dry grass, not be altered. Inspect regularly and This damage would not be or other things that can burn. clean any mud or dirt from the covered by the vehicle warranty. Keep the exhaust area clear of exhaust cooler, especially where the material that could ignite or burn. exhaust cooler connects to the See “Parking over Things That tailpipe and the openings where Under certain conditions, such as Burn” in the owner’s manual. fresh air enters the cooler. idling or very short trips, the The DPF will clean itself as part of self-cleaning process has less normal operation. Several factors efficiency and cannot be completed. including fuel consumed, hours of To resolve this, continue driving Caution engine operation, and miles driven safely at a steady speed as close to are monitored by the Engine Control the posted speed limit as possible, Avoid extended idling because Module (ECM). The self-cleaning preferably without stopping, until the the DPF system is not capable of occurs approximately once per tank message turns off. This can take up self-cleaning at idle. During of fuel. to 30 minutes. extended idling, monitor the instrument cluster lights and DIC (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
18 Driving and Operating If equipped with Power Manual regeneration can only be Caution (Continued) Take-Off (PTO), monitor the used when the DPF has become at instrument cluster for lights related least 90% full. At 100% full, it will for messages and take to the DPF. attempt to automatically self-clean if appropriate action. Continued proper driving conditions are met. idling with the warning light/ See Accessories and Modifications 0 The DPF will clean itself if the message on could cause damage 35 if you are adding accessories or modifying the vehicle. vehicle can be driven for about to the DPF requiring repair and 30 minutes. possible replacement that might Manual Regeneration of Diesel A DIC message displays when not be covered by the vehicle Particulate Filter manual regeneration is possible. warranty. This feature is only available on Scroll through the DIC pages to find Fleet and Commercial vehicles. the Exhaust Cleaning menu. During self-cleaning there will be a Depending on whether the vehicle change in the exhaust sound and To verify that the vehicle has this feature, refer to the Vehicle Service has a base or uplevel cluster, it may engine idle speed. Along with this, a be under the Settings menu. burning smell and reduction in fuel Parts Identification label (SPID) for economy may be noticed. This is RPO code FPF or see If the vehicle cannot be stopped normal. www.gmupfitter.com to contact the when the DIC message first GM Upfitter Integration Group. indicates cleaning is available, If the vehicle is idled or driven on If equipped, this feature allows for automatic self-cleaning may have very short trips with the DPF begun. If conditions cannot be met warning message on and the manual cleaning/regeneration of the DPF when it is unable to clean for self-cleaning to complete, and exhaust filter is not cleaned as manual regeneration is selected, it required, the malfunction indicator itself. It may be necessary to perform manual regeneration if may take up to four minutes for the lamp and a DIC message will system to switch to manual display. See your dealer. Also see driving conditions — such as extended slow speed, stop-and-go regeneration. When the switch Malfunction Indicator Lamp (Check occurs, a DIC message prompts to Engine Light) 0 10. traffic, extended idling, short drive cycles, or stationary PTO operation start the cleaning process. — prevent DPF self-cleaning. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 19 . The vehicle is at least 3 m (10 ft) If the infotainment display returns to { Warning from any obstructions or the previous screen, then one or materials that may combust more of the necessary safety Do not leave the vehicle during or melt. conditions has not been met. If you the regeneration. . The shift lever is in P (Park). cannot determine which condition Make sure that there are no has not been met, see flammable materials near the . The fuel tank is at least www.gmupfitter.com to contact the muffler, DPF, and exhaust pipe one-eighth full. GM Upfitter Integration Group. which may result in a fire. . All fluids are at the proper level. Continue to follow the instructions in The temperature of exhaust . No diagnostic trouble codes the DIC messages. Hold the gases is high enough to burn you. have been set, and the exhaust brake switch on the center You and others could be seriously malfunction indicator lamp is stack below the climate controls for more than three seconds, and then injured. not on. release it, to begin the regeneration . The engine coolant temperature process. is above 71 °C (160 °F). Before starting manual If the EXHAUST BRAKE ON regeneration, make sure all of the After making sure all safety message displays, then the switch following safety conditions are met: conditions have been met, press the was released too soon. Press it . The vehicle is parked on level trip odometer reset stem or again to turn off the exhaust brake, ground, away from any thumbwheel on the steering wheel then try again when the DIC flammable materials. for at least one second to select message prompts. Start on the infotainment display. . The vehicle is parked outdoors, When manual regeneration begins, away from any walls or Follow the instructions in the DIC the engine speed increases, the buildings. messages. Touch ACCEPT to engine cooling fan sound increases, acknowledge that all of these safety and a DIC message indicates that conditions have been met and to cleaning is in progress. activate regeneration. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
20 Driving and Operating A DIC message will display when Diesel Exhaust Fluid cleaning is complete. Cleaning Caution could take up to 30 minutes. Upon completion, the engine will return to { Warning Do not mix fuel with DEF, and do normal idle, but exhaust not put DEF in the fuel tank. This components will remain hot for Avoid getting Diesel Exhaust could lead to costly repairs that several minutes. Do not move the Fluid (DEF) on your skin or in might not be covered by the vehicle until the exhaust has had your eyes as it could cause vehicle warranty. time to cool. Manual regeneration irritation. For more safety, handling, and storage information, can be canceled at any time by Diesel Exhaust Fluid (DEF) is used pressing the brake pedal or by see the Diesel Exhaust Fluid with diesel engines to reduce the turning the engine off. Unusual container label. amount of regulated emissions noises may be heard if regeneration produced. Products such as AdBlue is interrupted. are types of DEF. The fluid level in Caution the DEF tank must be maintained for the vehicle to run properly. DEF Use only DEF that is GM is not a fuel additive. DEF freezes approved, or fluid containing the when exposed to temperatures API certified or ISO 22241 label. below −11 °C (12 °F). For DEF tank The use of other fluids could capacity see Capacities and 0 damage the system, requiring Specifications 65. costly repairs that will not be It is normal to hear the DEF system covered by the vehicle warranty. purge fluid back into the tank after the vehicle is shut off. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 21 Locating Diesel Exhaust Fluid Filling the DEF Tank DEF can be purchased at your authorized dealers. Additionally, some diesel truck fueling stations or retailers may have DEF for purchase. For vehicles with an active OnStar or connected services plan, OnStar can help to locate a DEF retailer. See “Customer Assistance Offices” in the owner’s manual for phone numbers to assist in contacting a GM dealer. See Recommended Fluids and Double Cab 0 Lubricants 61. Crew Cab The blue DEF cap is behind the fuel/DEF door. Do not remove the fuel and DEF caps at the same time. Fill diesel fuel and DEF independently. Turn the DEF cap counterclockwise to remove. In cold conditions DEF can freeze in the DEF fill pipe opening. If this prevents the filling of the DEF tank, place the vehicle in a warm garage overnight. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
22 Driving and Operating always add at least 7.5L (2 gal) of fluid to release the vehicle from speed limitation. If DEF is added under freezing conditions it may require less fluid to fill the DEF tank. When fluid reaches the top of the DEF fill pipe, stop filling. Do not top off the DEF tank. If using a bottle or jug to refill DEF, follow the instructions on the container label and use a dedicated fill aid.
Caution
Do not overfill the DEF tank and do not allow DEF to contact the finished surfaces of the vehicle, as it could damage the vehicle finish. If DEF is spilled during filling, wipe any affected surface with a damp cloth.
When replacing the DEF cap, turn it Fill the DEF tank on level ground capacity see Capacities and clockwise until it clicks. Make sure and with the vehicle off. When Specifications 0 65. When adding the cap is fully installed. adding DEF, it is recommended to DEF to an empty or very low tank, Push the fuel/DEF door closed. fully fill the DEF tank. For DEF tank Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 23 DEF Low (300 mi) of remaining range before The speed limitation will occur in a As the DEF level drops, warnings the exhaust fluid tank becomes series of steps with the final speed will automatically be displayed in the empty. limitation being 8 km/h (5 mph) Driver Information Center (DIC). As the fluid level nears empty, these along with a flashing warning light Select Vehicle Information in the messages appear every time the and chimes. DIC to view DEF level status. See vehicle is started. Adding fresh DEF to the system Driver Information Center (DIC) may resolve the problem after 0 If the DEF low warnings are ignored 12. and the DEF tank becomes empty, several kilometers/miles of driving, Refill the DEF tank at the first the DIC will display messages that depending on several factors. If the opportunity after a low warning describe the action needed and DIC message persists, see your indication to avoid vehicle speed distance until vehicle speed is dealer or additional DIC messages limitations. limited. For the DEF warning light may display. It may take some time for the symbol, see Diesel Exhaust Fluid Service DEF System (DEF) Warning Light 0 12. vehicle to detect that DEF has been If a problem occurs with the DEF added. If there was a vehicle speed DEF Quality Poor system, a DIC message displays limitation, it will be removed Use only DEF that is GM approved, along with distance until vehicle gradually and it may take several speed is limited. kilometers/miles for the DIC or fluid containing the API certified message to update. or ISO 22241 label. The speed limitation will occur in a DEF has an expiration date. If the series of steps with the final speed If DEF is added under freezing limitation being 8 km/h (5 mph) conditions, additional time may be system detects poor quality, or contaminated or diluted DEF, a along with a flashing warning light required to remove speed and chimes. limitations. DIC message will display along with distance until vehicle speed is In some cases, this message will The DEF range DIC message first limited. clear itself, indicating that the DEF displays at approximately 1 600 km system was able to correct the (1,000 mi). This message appears condition. If the DIC message again at approximately 500 km Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
24 Driving and Operating persists, see your dealer or Brakes Fuel additional DIC messages may display. Exhaust Brake Top Tier Fuel Service Emission System Exhaust braking is automatically GM recommends the use of TOP If a problem occurs with the vehicle activated when Tow/Haul Mode is TIER Diesel Fuel to keep the engine emission system, a DIC message selected. It maintains the vehicle’s clean, reduce engine deposits, and displays along with distance until speed by automatically maintain optimal vehicle vehicle speed is limited. The speed implementing a shift pattern that performance. Look for the TOP limitation will occur in a series of uses the engine and the TIER Logo or see steps with the final speed limitation transmission to slow the vehicle. www.toptiergas.com for a list of TOP of 88 km/h (55 mph) and chimes. In The system will command TIER Diesel Fuel marketers and some cases, this message will clear downshifts and use the turbocharger applicable countries. itself, indicating that the emission on the engine to reduce the system was able to correct the vehicle’s speed when the brake is condition. If the DIC message applied. The normal tow/haul shift persists, see your dealer or pattern will return once the vehicle additional DIC messages may is on a low grade or when the display. accelerator pedal is pressed. While in the Electronic Range Select (ERS) Mode, grade braking is deactivated, allowing the driver to select a range and limiting the highest gear available. See “Manual Mode” in the owner’s manual. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 25 Fuel Additives Do not use a diesel blend containing more than 20% biodiesel by volume. Caution (Continued) TOP TIER Detergent Diesel is highly recommended for use with . Diesel-water emulsions, your vehicle. If your area does not Caution such as Aquazole. have TOP TIER Detergent Diesel, Use of fuel that does not comply . Aftermarket diesel fuel GM recommends the use of with the required technical additives, which contain ACDelco Diesel Fuel Conditioner. standards can lead to engine alcohols, organo-metallic This will help maintain optimal power loss, increased wear, additives, or water engine performance. GM does not emulsifiers. recommend other aftermarket diesel or engine damage and may void additives. your warranty. If low-quality diesel is used for Some improper fuels are: Caution refueling, GM recommends adding . Diesel fuel with the addition ACDelco Fuel System Treatment of gasoline. If the vehicle is accidentally Plus-Diesel to help clean engine . Diesel fuel mixed with refueled with gasoline, do not deposits. This is available only at engine oil or automatic continue driving the vehicle. your GM dealer. transmission fluid. Driving the vehicle will damage Fuel for Diesel Engines . Triglyceride fuels, such as the fuel system. Have the vehicle raw vegetable oil or animal towed to a qualified technician to The selection of a high-quality fuel fat, in any form, including have the gasoline removed from is important for maintaining optimum with blends of diesel or the tank and fuel system. Refuel vehicle performance. Diesel fuel biodiesel. with Ultra Low Sulfur Diesel fuel. should meet or exceed the minimum It is also recommended to have . Marine diesel fuel and requirements in the most current the fuel system flushed with Ultra fuel oils. versions of the local fuel standards. Low Sulfur Diesel, to ensure all Do not use fuel with more than 15 (Continued) gasoline is removed. ppm sulfur. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
26 Driving and Operating Some conditions, such as dirty fuel, conventional diesel fuel and may decrease fuel filter life and a biodiesel blends, but may not Caution (Continued) 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, Information Center (DIC). diesel. They could damage the the fuel filter may become clogged fuel system and engine, and Climate Grade Diesel Fuels by wax naturally present in the fuel. damages would not be covered To unclog it, move the vehicle to a by the vehicle warranty. At temperatures below 0 °C (32 °F), warm garage area and allow the avoid using biodiesel blends above filter to warm up. The fuel filter may 5% by volume. Using such a fuel need to be replaced. See Fuel Filter Biodiesel Blends may cause fuel filter plugging, Replacement 0 31. system gelling, and freezing, which Fuels with a biodiesel content up to 20% by volume may be used (e.g., may adversely impact vehicle Biodiesel starting. named B20). Only use biodiesel Biodiesel is a renewable fuel blends up to 20% by volume that Severe winter grade diesel fuel, produced from vegetable oils or comply with your country’s or such as 1-D diesel fuel or Arctic region’s fuel standards. grade diesel fuel, can be used in animal fats that have been chemically modified to make it extreme cold temperatures (below compatible with diesel fuel. −18 °C or 0 °F); however, doing so Caution will reduce power and fuel economy. Do not use blends containing Avoid using severe winter grade fuel Caution more than 20% biodiesel. Any in warm or hot climates. It can result engine, fuel system, or exhaust in stalling, poor starting, and Do not use home-made biodiesel damage to the fuel injection system. or home test kits because the after-treatment system damage quality cannot be verified by would not be covered by the Fuels improperly blended for cold approved scientific methods. Do vehicle warranty. temperature operation may result in not use raw vegetable oil or other restricted fuel filters. The vehicle is unmodified bio-oils, fats, equipped with a fuel heating system to prevent gelling or waxing of (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 27 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. For unique properties and needs to be additional information for better cold handled differently than diesel fuel. Cold Weather Operation weather operation, see Engine Its use presents additional risks and Heater 0 16. may not be appropriate in all In cold weather, the fuel filter may situations. Certain vehicle operating become clogged by wax naturally Water in Fuel modes increase these risks and present in the fuel. To unclog it, should be avoided. move the vehicle to a warm garage Improper fuel tank inspection or area and allow the filter to warm up. cleaning, or contaminated fuel from Biodiesel fuel quality degrades with The fuel filter may need to be suppliers, can cause water to be time and exposure to high replaced. See Fuel Filter pumped into the fuel tank along with temperature quicker than Ultra Low Replacement 0 31. the diesel fuel. If a WATER IN FUEL Sulfur Diesel fuel. More frequent SERVICE REQUIRED message refueling provides the best At temperatures below 0 °C (32 °F), it is recommended to avoid using displays, the water must be drained opportunity to have a supply of fresh immediately. fuel. Storage at hot ambient biodiesel blends above 5% blend. This blend may cause fuel filter temperatures will accelerate { Warning biodiesel degradation. plugging, system gelling, and freezing that may affect vehicle If the vehicle is not driven often and starting. You may need to turn the Diesel fuel containing water is still uses little fuel, or if it is stored for ignition on and off a few times combustible. You or others could extended periods of time, avoid the before the vehicle will start. Also, be burned. If the fuel needs to be use of biodiesel blended fuels idle the vehicle for a couple of drained, keep sparks, flames, and above 5% by volume. When the minutes before accelerating. smoking materials away from the vehicle is stored for longer than one mixture. month, it should be run out of It is recommended to use Ultra Low biodiesel to below one-quarter tank, Sulfur No. 1-D diesel fuel or a blend of No. 1-D and No. 2-D diesel fuel to enhance vehicle operation in cold Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
28 Driving and Operating Water in Fuel Troubleshooting Caution Recommended If the WATER IN FUEL SERVICE Problem Action Water in the diesel fuel can REQUIRED message comes on: Message Drain the fuel corrode internal components of Recommended displays and filter the fuel system and lead to Problem Action stays on. immediately. severe damage. It can also If no water can Message The fuel filter is support fungus or bacteria be drained, and displays but partially filled growth, which can damage the goes off during with water. Drain the temperature fuel system. Even with a diesel the ignition the water as is below freezing, then fuel biocide, the fuel system may cycle. soon as still need to be cleaned. Your possible. See water may be dealer can advise of the "Removing frozen in the appropriate solution. Water from the filter. Move the vehicle to a If the fuel tank needs to be Fuel Filter" following. warm location to purged to remove water, see your thaw the water, dealer or a qualified technician. then drain the Improper purging can damage the fuel. If water still fuel system. does not drain, see your dealer. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 29
Recommended Caution Problem Action Immediately A large amount Driving with this message on can after refueling, of water is in the damage the fuel injection system message fuel tank. Drain and the engine. If the message displays and the fuel filter comes on right after a refuel, stays on. immediately. water was pumped into the fuel If the message tank. Turn off the engine and stays on or drain the water immediately. comes back on without refueling, then Removing Water from the Fuel fuel tank purging Filter 2. Place a container under the is required. See To drain water: filter drain valve. The filter drain your dealer. valve is on the bottom of the If the message 1. Turn the engine off and apply fuel filter. The filter drain valve displays and the the parking brake. is under the vehicle on the engine stalls or driver side, inside the runs rough, do frame rail. not drive until 3. Open the drain valve by turning the water it counterclockwise. Allow the contaminated filter to drain until all of the fuel is drained. water has been removed. Close the valve. 4. Properly dispose of the water contaminated fuel. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
30 Driving and Operating 5. Start the engine and let it run Priming the Fuel System 7. If the engine starts and runs for a few minutes. During the There is an electric priming pump but stalls again, turn the draining process, air may have that will bring fuel to the engine and ignition off for 60 seconds. entered the fuel system. If the eliminate air in the fuel lines. To 8. When the engine starts, let it engine stalls, the fuel system prime the engine: idle for a few minutes and may need to be primed. See check the filter for any leaks. “Fuel Priming” following. 1. Correct any condition that caused the loss of prime. Fuel Priming Running Out of Fuel 2. Turn the ignition on for For the fuel system to work properly, 30 seconds. Do not start the the fuel lines must be full of fuel. engine. The fuel pump will start { Warning If air gets in, the fuel lines need to priming. be primed before operating the Diesel fuel is combustible. It could vehicle. 3. Turn the ignition off, then back start a fire if it gets on hot engine on, and crank the engine for parts. You could be burned. Catch If air is present, the following may 15 seconds. any fuel from the air bleed valve, have happened: 4. If the engine does not start, and wipe up any spilled fuel with . The vehicle ran out of fuel. repeat Steps 2 and 3 until the a cloth. . The fuel filter was removed. engine starts. . The fuel lines were removed or If the engine does not start If the engine has stalled due to disconnected. after repeating Steps 2 and 3 running out of fuel, try the following three times, turn the ignition off steps to restart it: . The fuel filter water drain valve for 60 seconds. was opened while the engine 1. If parked on a level surface, was running. 5. Repeat the above steps until add at least 7.6 L (2 gal) of the engine starts. fuel. Up to 18.9 L (5 gal) may be needed if parked on a 6. If the engine starts, but does slope. not run smoothly, increase the engine speed slightly. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 31 2. Follow the fuel priming The fuel filter is on the driver side, 4. Remove the filter element. procedure earlier in this section inside the frame rail. If there is any dirt on the filter to prime the fuel filter. To replace the fuel filter: sealing surface, clean it off. 3. Turn the ignition to START for 1. Drain any water from the filter. 5. Install the new filter element 10 to 15 seconds at a time until and o-ring. See “Removing Water from the the engine starts. If the engine Fuel Filter” in Water in Fuel 6. Reinstall and tighten the filter tries to run, but does not run 0 27. cap to the housing. smoothly, increase the rpm slightly by using the accelerator Keep the engine off until the 7. Use the fuel filter priming pedal. This will help force air procedure is completed. procedure to prime the fuel through the system. 2. Apply the parking brake. filter. See “Fuel Priming” in Water in Fuel 0 27. 4. Return to Step 2 if the engine stalls and will not restart. 8. Start the engine and let it idle for five minutes. Check the fuel 5. After a few attempts, if the filter and air bleed valve for engine still does not start, see leaks. your dealer. 9. Reset the fuel filter monitor. Fuel Filter Replacement See Driver Information Center (DIC) 0 12. { Warning Filling the Tank Diesel fuel is flammable. It could An arrow on the fuel gauge start a fire if something ignites it, indicates which side of the vehicle and people could be burned. Do the fuel door is on. See “Fuel not let it get on hot engine parts, 3. Remove the filter element cap Gauge in the Owner s Manual. Do by turning it counterclockwise. ” ’ and keep matches or other not refill the diesel fuel and Diesel ignition sources away. Exhaust Fluid (DEF) at the same time. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
32 Driving and Operating
{ Warning Warning (Continued)
Fuel vapors and fuel fires burn . Before touching the fill violently and can cause injury or nozzle, touch a metallic death. object to discharge static electricity from your body. Follow these guidelines to help avoid injuries to you and others: . Fuel can spray out if the fill nozzle is inserted too . Read and follow all the quickly. This spray can instructions on the fuel happen if the tank is nearly pump island. full, and is more likely in hot . Turn off the engine when weather. Insert the fill nozzle To open the fuel door, push and refueling. slowly and wait for any hiss noise to stop before release the rearward center edge of . Keep sparks, flames, and beginning to flow fuel. the door. The capless refueling smoking materials away system does not have a fuel cap. from fuel. Fully insert and latch the fill nozzle, . Do not leave the fuel pump then begin fueling. unattended. { Warning . Avoid using electronic devices while refueling. Overfilling the fuel tank by more . Do not re-enter the vehicle than three clicks of a standard fill while pumping fuel. nozzle may cause: . Keep children away from . Vehicle performance issues, the fuel pump and never let including engine stalling and children pump fuel. damage to the fuel system. (Continued) (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Driving and Operating 33 Accidental Refueling with 1. Locate the capless funnel Warning (Continued) Gasoline adapter. . Fuel spills. 2. Insert and latch the funnel into Caution the capless fuel system. . Under certain conditions, fuel fires. If the vehicle is accidentally refueled with gasoline, do not { Warning Diesel fuel can foam when filling the continue driving the vehicle Attempting to refuel from a tank. The automatic pump nozzle except to get to a location where portable fuel container without may shut off, even if the tank is not it can be stopped safely. Driving using the funnel adapter may full. Wait for the foaming to stop, the vehicle will damage the cause fuel spillage and damage and then fill the tank more slowly. engine. Tow the vehicle for the capless fuel system. This Be careful not to spill fuel. Wait service. Have the gasoline could cause a fire. You or others five seconds after pumping before removed from the tank and fuel could be badly burned and the removing the fill nozzle. Clean fuel system. vehicle could be damaged. from painted surfaces as soon as possible. See Exterior Care under “ ” Filling the Tank with a Portable Vehicle Care in the Owner s 3. Remove and clean the funnel ’ Gas Can Manual. Push the fuel door closed. adapter and return it to the If the vehicle runs out of fuel and storage location. { Warning must be filled from a portable gas can: If a fire starts while you are refueling, do not remove the fill nozzle. Shut off the flow of fuel by shutting off the pump or by notifying the station attendant. Leave the area immediately. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
34 Driving and Operating Filling a Portable Fuel Warning (Continued) Trailer Towing Container When towing at high elevation on . Place the nozzle inside the steep uphill grades, consider the { Warning fill opening of the container following: before dispensing fuel, and Engine coolant at higher elevation Filling a portable fuel container keep it in contact with the fill while it is in the vehicle can cause will boil at a lower temperature than opening until filling is at or near sea level. If the engine is fuel vapors that can ignite either complete. turned off immediately after towing by static electricity or other . Fill the container no more at high elevation on steep uphill means. You or others could be grades, the vehicle may show signs badly burned and the vehicle than 95% full to allow for expansion. similar to engine overheating. To could be damaged. Always: avoid this, let the engine run while . Use approved fuel . Do not smoke, light parked (preferably on level ground) containers. matches, or use lighters with the transmission in P (Park) while pumping fuel. and the parking brake applied for at . Remove the container from least five minutes before turning the the vehicle, trunk, or pickup . Do not use electronic engine off. If the overheat warning bed before filling. devices while pumping fuel. comes on, see Engine Overheating . Place the container on the 0 48. ground. (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 35 General Information Damage to vehicle components Vehicle Care resulting from modifications or the Accessories and installation or use of non-GM General Information certified parts, including control Modifications module or software modifications, is Accessories and not covered under the terms of the Modifications ...... 35 Adding non-dealer accessories or vehicle warranty and may affect making modifications to the vehicle remaining warranty coverage for Vehicle Checks can affect vehicle performance and affected parts. Engine Compartment safety, including such things as Overview ...... 37 airbags, braking, stability, ride and GM Accessories are designed to Engine Oil ...... 38 handling, emissions systems, complement and function with other Engine Oil Life System ...... 40 aerodynamics, durability, and systems on the vehicle. See your Automatic Transmission electronic systems like antilock dealer to accessorize the vehicle Fluid ...... 40 brakes, traction control, and stability using genuine GM Accessories Engine Air Filter Life System . . . 41 control. These accessories or installed by a dealer technician. Engine Air Cleaner/Filter ...... 41 modifications could even cause See the warranty manual. Cooling System (Engine) ...... 42 malfunction or damage not covered Cooling System by the vehicle warranty. (Turbocharger) ...... 46 Engine Overheating ...... 48 Engine Fan ...... 49 Electrical System Engine Compartment Fuse Block ...... 49 Jump Starting Jump Starting - North America ...... 51 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
36 Vehicle Care Aftermarket Engine and torque levels that could Performance Enhancement damage, create failure, or reduce Products and Modifications the life of the engine, engine emission system, transmission, and Some aftermarket engine drivetrain. Damage, failure, performance products and or reduced life of the engine, modifications promise a way to transmission, emission system, increase the horsepower and torque drivetrain, or other vehicle levels of the vehicle's powertrain. components caused by aftermarket You should be aware that these engine performance enhancement products could have harmful effects products or modifications might not on the performance and life of the be covered under the vehicle engine, exhaust emission system, warranty. transmission, and drivetrain. The engine, transmission, and drivetrain have been designed and built to offer industry leading durability and performance in the most demanding applications. Engine power enhancement products may enable the engine to operate at horsepower Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 37 Vehicle Checks Engine Compartment Overview Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
38 Vehicle Care 1. Remote Negative (-) Ground Following these simple, but Terminal important steps will help protect { Warning your investment: 2. Positive (+) Terminal The engine oil dipstick handle 3. Battery . Use engine oil approved to the may be hot; it could burn you. proper specification and of the Use a towel or glove to touch the 4. Engine Compartment Fuse proper viscosity grade. See dipstick handle. Block “Selecting the Right Engine Oil” 5. Engine Oil Fill Cap in this section. If a low oil Driver Information Center 6. Engine Fan (Out of View) . Check the engine oil level (DIC) message displays, check the regularly and maintain the oil level. 7. Engine Oil Dipstick proper oil level. See “Checking 8. Engine Coolant Surge Tank Engine Oil” and “When to Add Follow these guidelines: and Pressure Cap Engine Oil” in this section. . To get an accurate reading, park 9. Charge Air Coolant Surge Tank . Change the engine oil at the the vehicle on level ground. and Pressure Cap appropriate time. See “Engine Check the engine oil level after Oil Life System” in the owner’s the engine has been off for at 10. Engine Air Cleaner/Filter manual. least two hours. Checking the 11. Brake Fluid Reservoir engine oil level on steep grades . Always dispose of engine oil or too soon after engine shutoff 12. Auxiliary Fuse Block properly. See “What to Do with can result in incorrect readings. 13. Windshield Washer Fluid Used Oil” in this section. Accuracy improves when Reservoir Checking Engine Oil checking a cold engine prior to starting. Remove the dipstick Engine Oil Check the engine oil level regularly, and check the level. every 650 km (400 mi), especially To ensure proper engine prior to a long trip. The engine oil . If unable to wait two hours, the performance and long life, careful dipstick handle is a loop. See engine must be off for at least attention must be paid to engine oil. Engine Compartment Overview 0 37 15 minutes if the engine is for the location. warm, or at least 30 minutes if Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 39 the engine is not warm. Pull out Selecting the Right Engine Oil the dipstick, wipe it with a clean Caution Selecting the right engine oil paper towel or cloth, then push it depends on both the proper oil back in all the way. Remove it Do not add too much oil. Oil specification and viscosity grade. again, keeping the tip down, and levels above or below the See Recommended Fluids and check the level. acceptable operating range shown on the dipstick are harmful Lubricants 0 61. When to Add Engine Oil to the engine. If the oil level is Specification above the operating range (i.e., the engine has so much oil that Use engine oils that meet the the oil level gets above the dexosD specification. Engine oils that have been approved by GM as cross-hatched area that shows meeting the dexosD specification the proper operating range), the are marked with the dexosD engine could be damaged. Drain approved logo. See the excess oil or limit driving of www.gmdexos.com. If the oil is below the cross-hatched the vehicle, and seek a service area at the tip of the dipstick and professional to remove the the engine has been off for at least excess oil. 15 minutes, add 1 L (1 qt) of the recommended oil and then recheck See Engine Compartment Overview the level. See Selecting the Right “ 0 37 for the location of the engine Engine Oil later in this section for ” oil fill cap. an explanation of what kind of oil to use. For engine oil crankcase Be sure to add enough oil to put the Caution capacity, see Capacities and level somewhere in the proper Specifications 0 65. operating range. Push the dipstick Failure to use the recommended all the way back in when through. engine oil or equivalent can result in engine damage not covered by the vehicle warranty. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
40 Vehicle Care Viscosity Grade or a good hand cleaner. Wash or Automatic Transmission Use SAE 0W-20 viscosity grade properly dispose of clothing or rags Fluid engine oil. containing used engine oil. See the manufacturer's warnings about the When to Check and Change When selecting an oil of the use and disposal of oil products. appropriate viscosity grade, it is It is not necessary to check the recommended to select an oil of the Used oil can be a threat to the transmission fluid level. correct specification. See environment. If you change your A transmission fluid leak is the only own oil, be sure to drain all the oil “Specification” earlier in this section. reason for fluid loss. If a leak from the filter before disposal. Never occurs, take the vehicle to your Engine Oil Additives/Engine dispose of oil by putting it in the dealer and have it repaired as soon Oil Flushes trash or pouring it on the ground, as possible. into sewers, or into streams or Do not add anything to the oil. The bodies of water. Recycle it by taking There is a special procedure for recommended oils meeting the it to a place that collects used oil. checking and changing the dexos specification are all that is transmission fluid. Because this needed for good performance and Engine Oil Life System procedure is difficult, this should be engine protection. done at your dealer. Contact your Engine oil system flushes are not The engine oil life system calculates dealer for additional information. recommended and could cause engine oil life based on vehicle use engine damage not covered by the and displays the CHANGE ENGINE Caution vehicle warranty. OIL SOON message when it is time to change the engine oil and filter. Use of the incorrect automatic What to Do with Used Oil The oil life system should be reset transmission fluid may damage to 100% only following an oil Used engine oil contains certain the vehicle, and the damage may change. See Engine Oil Life elements that can be unhealthy for “ not be covered by the vehicle System in the owner s manual. your skin and could even cause ” ’ warranty. Always use the correct cancer. Do not let used oil stay on automatic transmission fluid. See your skin for very long. Clean your Recommended Fluids and skin and nails with soap and water, Lubricants 0 61. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 41 Change the fluid and filter at the If the DIC displays a message to See Engine Compartment Overview intervals listed in Maintenance check the engine air filter system, 0 37 for more information on Schedule 0 56, and be sure to use see your dealer. location. the fluid listed in Recommended Fluids and Lubricants 0 61. How to Reset the Engine Air When to Inspect the Engine Air Filter Life System Cleaner/Filter Engine Air Filter Life To reset: If the vehicle is not equipped with System 1. Place the vehicle in P (Park). the engine air filter life system, see Maintenance Schedule 0 56 for If equipped, this feature provides 2. Display the Air Filter Life on the intervals on inspecting and the engine air filter's remaining life DIC. See Driver Information replacing the engine air cleaner/ and best timing for a change. The Center (DIC) 0 12. filter. timing to change an engine air filter depends on driving and 3. Press T on the steering wheel, How to Inspect/Replace the environmental conditions. or press the trip odometer reset Engine Air Cleaner/Filter stem if the vehicle does not When to Change the Engine have DIC controls, to move to Do not start the engine or have the Air Filter the Reset/Disable display area. engine running with the engine air Select Reset, then press the cleaner/filter housing open. Before When the Driver Information Center removing the engine air cleaner/ (DIC) displays a message to replace thumbwheel or press the reset stem for several seconds. filter, make sure that the engine air the engine air filter at the next oil cleaner/filter housing and nearby change, follow this timing. 4. Press the thumbwheel or the components are free of dirt and When the DIC displays a message reset stem to confirm the reset. debris. Remove the engine air to replace the engine air filter soon, cleaner/filter. Lightly tap and shake replace the engine air filter at the Engine Air Cleaner/Filter the engine air cleaner/filter (away from the vehicle), to release loose earliest convenience. The engine air cleaner/filter is dust and dirt. Inspect the engine air located in the engine compartment The system must be reset after the cleaner/filter for damage, and on the driver side of the vehicle. engine air filter is changed. replace if damaged. Do not clean Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
42 Vehicle Care the engine air cleaner/filter or 4. If equipped, reset the engine Cooling System (Engine) components with water or air filter life system after compressed air. replacing the engine air filter. The cooling system allows the See Engine Air Filter Life engine to maintain the correct To inspect or replace the air cleaner/ 0 working temperature. filter: System 41. { Warning
Operating the engine with the air cleaner/filter off can cause you or others to be burned. Use caution when working on the engine. Do not start the engine or drive the vehicle with the air cleaner/filter off, as flames may be present if the engine backfires.
1. Engine Cooling Fan (Out 1. Remove the three screws, tilt Caution the cover, and slide it out of the of View) 2. Engine Coolant Surge Tank assembly. If the air cleaner/filter is off, dirt and Pressure Cap 2. Inspect or replace the engine can easily get into the engine, 3. Charge Air Coolant Surge air cleaner/filter. which could damage it. Always Tank and Pressure Cap 3. Lower the cover, slide it into have the air cleaner/filter in place the assembly, then secure with when driving. the three screws. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 43 Engine Coolant What to Use { Warning The cooling system in the vehicle is An underhood electric fan can filled with DEX-COOL engine { Warning coolant mixture. See Recommended start up even when the engine is Plain water, or other liquids such not running and can cause injury. Fluids and Lubricants 0 61 and Maintenance Schedule 0 56. as alcohol, can boil before the Keep hands, clothing, and tools proper coolant mixture will. With away from any underhood The following explains the cooling plain water or the wrong mixture, electric fan. system and how to add coolant the engine could get too hot but when it is low. If there is a problem there would not be an overheat with engine overheating, see Engine warning. The engine could catch Overheating 0 48. { Warning fire and you or others could be A 50/50 mixture of clean, drinkable burned. Do not touch heater or radiator water and DEX-COOL coolant will: hoses, or other engine parts. . Give freezing protection down to Use a 50/50 mixture of clean, They can be very hot and can −37 °C (−34 °F). drinkable water and DEX-COOL burn you. Do not run the engine if coolant which will not damage there is a leak; all coolant could . Give boiling protection up to 129 °C (265 °F). aluminum parts. If using this leak out. That could cause an mixture, nothing else needs to be engine fire and can burn you. Fix . Protect against rust and added. any leak before driving the corrosion. vehicle. If coolant has to be added more . Help keep the proper engine than four times a year, have your temperature. dealer check the vehicle cooling . Let the warning lights and system. gauges work as they should. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
44 Vehicle Care Checking Coolant Adding Coolant Caution
Do not use anything other than a Caution mix of DEX-COOL coolant that If coolant is changed or added, meets GM Standard always add enough to fill the GMW3420 and clean, drinkable system completely or engine water. Anything else can cause damage may occur. damage to the engine cooling system and the vehicle, which would not be covered by the If more coolant is needed, add the vehicle warranty. proper DEX-COOL coolant mixture at the surge tank, but be careful not to spill it. Never dispose of engine coolant by The coolant surge tank is in the putting it in the trash, or by pouring { Warning it on the ground or into sewers, engine compartment on the driver side of the vehicle. See Engine streams, or bodies of water. Have Spilling coolant on hot engine the coolant changed by an Compartment Overview 0 37 for location. parts can burn you. Coolant authorized service center, familiar contains ethylene glycol and it will with legal requirements regarding The vehicle must be on a level burn if the engine parts are hot used coolant disposal. This will help surface. When the engine is cold, enough. protect the environment and your the coolant level should be at the health. indicated mark. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 45 Turn the pressure cap slowly 6. Verify coolant level after the { Warning clockwise about one-half turn. engine is shut off and the If a hiss is heard, wait for that coolant is cold. If necessary, Steam and scalding liquids from a to stop. A hiss means there is repeat Steps 1–6. hot cooling system are under still some pressure left. pressure. Turning the pressure If the coolant level is still low after cap, even a little, can cause them 2. Keep turning the pressure cap having followed these steps twice, to come out at high speed and slowly, and remove it. have the coolant system checked by you could be burned. Never turn 3. Slowly fill the coolant surge a certified technician at the dealer for a possible leak. the cap when the cooling system, tank. Do not let the coolant including the pressure cap, is hot. level go above the indicated Wait for the cooling system and mark in the tank until after the Caution pressure cap to cool. engine comes to the operating temperature in Step 4. If the pressure cap is not tightly installed, coolant loss and engine If no coolant is visible in the surge 4. With the coolant surge tank damage may occur. Be sure the tank, add coolant as follows: pressure cap off, start the cap is properly and tightly engine and let it run until the secured. engine coolant temperature gauge indicates approximately 90 °C (195 °F). Automatic Coolant Fill and Air By this time, the coolant level Removal inside the coolant surge tank If equipped, this feature assists in may be lower. If the level is filling and removing air from the 1. Remove the coolant surge tank lower, slowly add more of the cooling system after service of pressure cap when the cooling proper mixture to the coolant components or when coolant is system, including the coolant surge tank until it reaches the added after being too low. surge tank pressure cap and indicated mark. upper radiator hose, is no 5. Replace the pressure cap and longer hot. be sure it is locked. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
46 Vehicle Care To activate the fill and air removal and shut off the engine. Allow 1. Engine Cooling Fan (Out process: the engine to completely cool of View) 1. With a cold system, add down and add coolant. 2. Engine Coolant Surge Tank coolant to the indicated mark 9. Allow the system to completely and Pressure Cap on the surge tank. cool down and check the level 3. Charge Air Coolant Surge Tank and Pressure Cap 2. Turn the ignition on. of coolant in the surge tank. If it is low, add fluid to the indicated 3. Turn off the air conditioning. mark and repeat Steps 3–9. { Warning 4. Set the parking brake. Cooling System An underhood electric fan can 5. At the same time, press the start up even when the engine is accelerator and the brake for (Turbocharger) not running and can cause injury. two seconds, then release. The cooling system allows the Keep hands, clothing, and tools 6. Start the vehicle within five to Charge Air Cooling System to away from any underhood 10 seconds. maintain the correct working electric fan. temperature. 7. Idle the engine for three minutes while adding fluid as the level drops below { Warning the indicated mark on the surge tank. Do not touch heater or radiator 8. Replace the cap and run the hoses, or other engine parts. engine at 2500 rpm for They can be very hot and can 10 minutes while watching the burn you. Do not run the engine if coolant temperature gauge to there is a leak; all coolant could be sure the temperature has leak out. That could cause an risen but is not overheating. engine fire and can burn you. Fix If the temperature has not risen any leak before driving the or is overheating, return to idle vehicle. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 47 Charge Air Coolant What to Use Caution The charge air cooling system in the vehicle is filled with DEX-COOL { Warning Do not use anything other than a engine coolant mixture. See mix of DEX-COOL coolant that Recommended Fluids and Plain water, or other liquids such as alcohol, can boil before the meets GM Standard Lubricants 0 61 and GMW3420 and clean, drinkable Maintenance Schedule 0 56. proper coolant mixture will. With plain water or the wrong mixture, water. Anything else can cause The following explains the cooling the engine could get too hot but damage to the engine cooling system and how to add coolant there would not be an overheat system and the vehicle, which when it is low. If there is a problem warning. The engine could catch would not be covered by the with engine overheating, see Engine fire and you or others could be vehicle warranty. Overheating 0 48. burned. A 50/50 mixture of clean, drinkable Never dispose of engine coolant by water and DEX-COOL coolant will: putting it in the trash, or by pouring Use a 50/50 mixture of clean, it on the ground or into sewers, . Give freezing protection down to drinkable water and DEX-COOL streams, or bodies of water. Have −37 °C (−34 °F). coolant which will not damage the coolant changed by an aluminum parts. If using this . Give boiling protection up to authorized service center, familiar mixture, nothing else needs to be 129 °C (265 °F). with legal requirements regarding added. . Protect against rust and used coolant disposal. This will help corrosion. If coolant has to be added more protect the environment and your than four times a year, have your health. . Help keep the proper engine dealer check the vehicle charge air temperature. cooling system. . Let the warning lights and gauges work as they should. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
48 Vehicle Care Checking Coolant Adding Coolant Caution If the coolant level in the charge air coolant surge tank is low, return the Do not run the engine if there is a vehicle to your dealer to be checked leak in the engine cooling system. for leaks, purged of air and coolant This can cause a loss of all level adjustment. coolant and can damage the system and vehicle. Have any Engine Overheating leaks fixed right away. There is an engine coolant temperature gauge on the If No Steam Is Coming from instrument cluster. See the owner’s the Engine Compartment manual. A Driver Information Center (DIC) If Steam Is Coming from the message, along with a low coolant The charge air coolant surge tank is Engine Compartment in the engine compartment on the condition, can indicate a serious driver side of the vehicle. See problem. Engine Compartment Overview 0 37 { Warning If there is an engine overheat for location. warning and the vehicle does not Steam and scalding liquids from a have a low coolant condition, and The vehicle must be on a level hot cooling system are under surface. When the engine is cold, no steam is heard or seen, the pressure. Turning the pressure problem may not be too serious. the coolant level should be at the cap, even a little, can cause them indicated mark. Sometimes the engine can get a to come out at high speed and little too hot when the vehicle: you could be burned. Never turn the cap when the cooling system, . Climbs a long hill on a hot day. including the pressure cap, is hot. . Stops after high-speed driving. Wait for the cooling system and . Idles for long periods in traffic. pressure cap to cool. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 49 . Tows a trailer. See “Driving on Engine Fan Electrical System Grades” under “Driving Characteristics and Towing Tips” The vehicle has electric cooling in the owner’s manual. fan(s). The fans may be heard Engine Compartment spinning at low speed during most Fuse Block If the DIC message comes on with everyday driving. The fans may turn no sign of steam, try this for a off if no cooling is required. Under The engine compartment fuse block minute or so: heavy vehicle loading, trailer towing, is in the engine compartment, on 1. In heavy traffic, let the engine high outside temperatures, the passenger side of the vehicle. idle in N (Neutral) while or operation of the air conditioning stopped. If it is safe to do so, system, the fans may change to pull off the road, shift to high speed and an increase in fan P (Park) or N (Neutral), and let noise may be heard. This is normal the engine idle. and indicates that the cooling system is functioning properly. The 2. Turn on the heater to full hot at fans will change to low speed when the highest fan speed and additional cooling is no longer open the window as necessary. required. If the vehicle no longer has the The electric engine cooling fans overheat warning, the vehicle can may run after the engine has been be driven. Just to be safe, drive turned off. This is normal and no slower for about 10 minutes. If the service is required. warning does not come back on, Lift the cover to access the fuse drive normally and have the cooling block. system checked for proper fill and function. If the warning continues, pull over, stop, and park the vehicle right away. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
50 Vehicle Care Auxiliary Fuse Block Caution Relays Usage Fuses Usage 1 Diesel exhaust fluid Spilling liquid on any electrical 7 Powertrain control component on the vehicle may sensor (LD) 2 Fuel heater damage it. Always keep the 8 — covers on any electrical 3 100 watt component. 9 Diesel exhaust fluid pump (LD) control 4 Powertrain A fuse puller is available in the left 10 Fuel heater sensor (LD) instrument panel End Cap. 11 Smart sensors 5 Cooling fan The vehicle may not be equipped 12 SCRPM clutch (HD) with all of the fuses, relays, and 13 100 watt 6 Powertrain features shown. pump (LD) sensor (HD) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 51 Jump Starting See “California Proposition 65 Warning” in the owner’s manual. Jump Starting - North { Warning America If the battery has run down, try to Batteries can hurt you. They can use another vehicle and some be dangerous because: jumper cables to start your vehicle. . They contain acid that can Be sure to use the following steps to burn you. do it safely. . They contain gas that can explode or ignite. { Warning . They contain enough 1. Good Battery Positive WARNING: Battery posts, electricity to burn you. Terminal terminals, and related If you do not follow these steps 2. Good Battery Negative accessories contain lead and lead exactly, some or all of these Terminal compounds, chemicals known to things can hurt you. 3. Discharged Battery Remote the State of California to cause Negative Grounding cancer and birth defects or other Terminal reproductive harm. Batteries also 4. Discharged Battery Positive contain other chemicals known to Caution Terminal the State of California to cause Ignoring these steps could result The jump start positive terminal on cancer. WASH HANDS AFTER the discharged battery (4) is located HANDLING. For more information in costly damage to the vehicle that would not be covered by the in the engine compartment on the go to www.P65Warnings.ca.gov/ passenger side of the vehicle. passenger-vehicle. vehicle warranty. Trying to start the vehicle by pushing or pulling it The jump start remote negative will not work, and it could damage grounding (3) for the discharged the vehicle. battery is to the left of the battery. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
52 Vehicle Care The jump start positive terminal (1) and negative terminal (2) are on the Caution { Warning battery of the vehicle providing the jump start. If any accessories are left on or Using a match near a battery can plugged in during the jump cause battery gas to explode. The positive jump start connection starting procedure, they could be People have been hurt doing this, for the discharged battery is under a damaged. The repairs would not and some have been blinded. trim cover. Open the cover to be covered by the vehicle Use a flashlight if you need more expose the terminal. warranty. Whenever possible, turn light. 1. Check the other vehicle. off or unplug all accessories on Battery fluid contains acid that It must have a 12-volt battery either vehicle when jump starting. can burn you. Do not get it on with a negative ground system. you. If you accidentally get it in 4. Turn the ignition off. Turn off all your eyes or on your skin, flush Caution lights and accessories in both the place with water and get vehicles, except the hazard If the other vehicle does not have medical help immediately. warning flashers if needed. a 12-volt system with a negative ground, both vehicles can be { Warning damaged. Only use a vehicle that { Warning has a 12-volt system with a An electric fan can start up even negative ground for jump starting. when the engine is not running Fans or other moving engine and can injure you. Keep hands, parts can injure you badly. Keep 2. Position the two vehicles so clothing, and tools away from any your hands away from moving that they are not touching. underhood electric fan. parts once the engine is running. 3. Set the parking brake firmly and put the shift lever in 5. Connect one end of the red P (Park) with an automatic positive (+) cable to the transmission, or N (Neutral) positive (+) terminal on the with a manual transmission. discharged battery. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Vehicle Care 53 6. Connect the other end of the red positive (+) cable to the Caution positive (+) terminal of the good battery. If the jumper cables are connected or removed in the 7. Connect one end of the black wrong order, electrical shorting negative (–) cable to the may occur and damage the negative (–) terminal of the vehicle. The repairs would not be good battery. covered by the vehicle warranty. 8. Connect the other end of the Always connect and remove the black negative (–) cable to the jumper cables in the correct order, remote negative (–) grounding making sure that the cables do terminal for the discharged not touch each other or other battery. metal. 9. Start the engine in the vehicle with the good battery and run Jumper Cable Removal the engine at idle speed for at least four minutes. Reverse the sequence exactly when removing the jumper cables. 10. Try to start the vehicle that had the dead battery. If it will not After starting the disabled vehicle start after a few tries, it and removing the jumper cables, probably needs service. allow it to idle for several minutes. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
54 Service and Maintenance General Information Your dealer recognizes the Service and 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 General Information maintenance schedule section in for routine maintenance such as oil General Information ...... 54 the owner’s manual. changes and tire rotations and Your vehicle is an important additional maintenance items like Maintenance Schedule investment. This section describes tires, brakes, batteries, and wiper Maintenance Schedule ...... 56 the required maintenance for the blades. Recommended Fluids, vehicle. Follow this schedule to help Lubricants, and Parts protect against major repair Caution expenses resulting from neglect or Recommended Fluids and Damage caused by improper Lubricants ...... 61 inadequate maintenance. It may maintenance can lead to costly Maintenance Replacement also help to maintain the value of repairs and may not be covered Parts ...... 62 the vehicle if it is sold. It is the responsibility of the owner to have by the vehicle warranty. Maintenance Records all required maintenance performed. Maintenance intervals, checks, Maintenance Records ...... 63 Your dealer has trained technicians inspections, recommended fluids, who can perform required and lubricants are important to maintenance using genuine keep the vehicle in good working replacement parts. They have condition. up-to-date tools and equipment for Do not have chemical flushes that fast and accurate diagnostics. Many are not approved by GM dealers have extended evening and performed on the vehicle. The Saturday hours, courtesy use of flushes, solvents, cleaners, transportation, and online or lubricants that are not scheduling to assist with service needs. (Continued) Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Service and Maintenance 55 . Are driven on reasonable road Caution (Continued) surfaces within legal driving { Warning limits. approved by GM could damage Performing maintenance work can the vehicle, requiring expensive . Use the recommended fuel. See be dangerous and can cause 0 repairs that are not covered by Fuel for Diesel Engines 25. serious injury. Perform the vehicle warranty. Refer to the information in the maintenance work only if the Maintenance Schedule Additional required information, proper tools, The Tire Rotation and Required Required Services - Normal chart. and equipment are available. Services are the responsibility of the The Additional Required Services - If they are not, see your dealer to vehicle owner. It is recommended to Severe are for vehicles that are: have a trained technician do the have your dealer perform these work. See “Doing Your Own . Mainly driven in heavy city traffic services every 12 000 km/7,500 mi. Service Work” in the owner’s in hot weather. Proper vehicle maintenance helps to manual. keep the vehicle in good working . Mainly driven in hilly or condition, improves fuel economy, mountainous terrain. and reduces vehicle emissions. . Frequently towing a trailer. Because of the way people use . Used for high speed or vehicles, maintenance needs vary. competitive driving. There may need to be more frequent checks and services. The . Used for taxi, police, or delivery Additional Required Services - service. Normal are for vehicles that: Refer to the information in the . Carry passengers and cargo Maintenance Schedule Additional within recommended limits on Required Services - Severe chart. the Tire and Loading Information label. See “Vehicle Load Limits” in the owner’s manual. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
56 Service and Maintenance Maintenance a year and the oil life system must Extended Idle Use be reset. Your trained dealer When the vehicle is used in a way Schedule technician can perform this work. that requires extended idle time, If the engine oil life system is reset one hour of use shall be deemed Owner Checks and Services accidentally, service the vehicle the same as 53 km (33 mi). See within 5 000 km/3,000 mi since the See the owner’s manual for other Engine Hours (Hourmeter) if last service. Reset the oil life “ ” services and intervals that may be equipped, under Driver Information system when the oil is changed. “ required. Center (DIC) in the owner s See Engine Oil Life System 0 40. ” ’ At Each Fuel Stop manual. Engine Air Filter Change . Check the engine oil level. See Required Services Every Engine Oil 0 38. When the REPLACE AT NEXT OIL 12 000 km/7,500 mi CHANGE message displays, the Engine Oil Change engine air filter should be replaced . Check engine oil level and oil life percentage. If needed, When the CHANGE ENGINE OIL at the next engine oil change. When change engine oil and filter, SOON message displays, have the the REPLACE ENGINE AIR FILTER and reset oil life system. See engine oil and filter changed within SOON message displays, the Engine Oil 0 38 and the next 1 000 km/600 mi. If driven engine air filter should be replaced Engine Oil Life System 0 40. under the best conditions, the at the earliest convenience. Reset engine oil life system may not the engine air filter life system after indicate the need for vehicle service the engine air filter is replaced. See for up to a year. The engine oil and Engine Air Filter Life System 0 41. filter must be changed at least once Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Service and Maintenance 57 . If equipped with the engine air . Check engine coolant level. See filter life system, check the air Cooling System (Engine) 0 42 or filter life percentage. Cooling System (Turbocharger) If necessary, replace the engine 0 46. air filter and reset the engine air . Visually check for fluid leaks. filter life system. See Engine Air Filter Life System 0 41. If the . Visually inspect fuel system for vehicle is not equipped with the damage or leaks. engine air filter life system, . Visually inspect exhaust system inspect the engine air cleaner and nearby heat shields for filter. See Engine Air Cleaner/ loose or damaged parts. Filter 0 41. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
58 Service and Maintenance
Maintenance Schedule
Additional Required 12 000 km/7,500 mi 24 000 km/15,000 mi 36 000 km/22,500 mi 48 000 km/30,000 mi 60 000 km/37,500 mi 72 000 km/45,000 mi 84 000 km/52,500 mi 96 000 km/60,000 mi 108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi 144 000 km/90,000 mi 156 000 km/97,500 mi 180 000 km/112,500 mi Services - Normal 168 000 km/105,000 mi 192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi 228 000 km/142,500 mi 240 000 km/150,000 mi
Perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Check engine air filter life per- @@@@@@@@@@@@@@@@@@@@ centage and status. Change engine air filter, if needed. If the vehicle is not equipped with the engine air filter life system, replace engine air cleaner @ @ @ filter. (1) Drain and fill engine cooling system. (2) @ Visually inspect accessory drive belts. (3) @ Replace oil pump belt. (4) @ Replace fuel filter. (5) @ @ @ @ @
Footnotes — Maintenance (2) Or every five years, whichever (5) Or every two years, or when the Schedule Additional Required comes first. See Cooling System CHANGE FUEL FILTER message in Services - Normal (Engine) 0 42 or Cooling System the Driver Information Center (DIC) 0 (1) Or every four years, whichever (Turbocharger) 46. comes on, whichever comes first. comes first. If driving in dusty (3) Or every 10 years, whichever The fuel filter may need to be conditions, inspect the filter at each comes first. Inspect for fraying, replaced more often based on oil change or more often as needed. excessive cracking, or damage; biodiesel usage, driving in climates See Engine Air Cleaner/Filter 0 41. replace, if needed. with severe dust, off-road driving, or towing a trailer for extended (4) Or every 15 years, whichever periods. comes first. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Service and Maintenance 59
Maintenance Schedule
Additional Required 12 000 km/7,500 mi 24 000 km/15,000 mi 36 000 km/22,500 mi 48 000 km/30,000 mi 60 000 km/37,500 mi 72 000 km/45,000 mi 84 000 km/52,500 mi 96 000 km/60,000 mi 108 000 km/67,500 mi 120 000 km/75,000 mi 132 000 km/82,500 mi 144 000 km/90,000 mi 156 000 km/97,500 mi 180 000 km/112,500 mi Services - Severe 168 000 km/105,000 mi 192 000 km/120,000 mi 204 000 km/127,500 mi 216 000 km/135,000 mi 228 000 km/142,500 mi 240 000 km/150,000 mi
Perform Required Services. Check engine oil level and oil life percentage. Change engine oil and filter, if needed. Check engine air filter life per- @@@@@@@@@@@@@@@@@@@@ centage and status. Change engine air filter, if needed. If the vehicle is not equipped with the engine air filter life system, replace engine air cleaner @ @ @ filter. (1) Change automatic transmission fluid and filter. @ @ @ Drain and fill engine cooling system. (2) @ Visually inspect accessory drive belts. (3) @ Replace oil pump belt. (4) @ Replace fuel filter. (5) @ @ @ @ @
Footnotes — Maintenance (2) Or every five years, whichever (3) Or every 10 years, whichever Schedule Additional Required comes first. See Cooling System comes first. Inspect for fraying, Services - Severe (Engine) 0 42 or excessive cracking, or damage; Cooling System (Turbocharger) replace, if needed. (1) Or every four years, whichever 0 comes first. If driving in dusty 46. (4) Or every 15 years, whichever conditions, inspect the filter at each comes first. oil change or more often as needed. See Engine Air Cleaner/Filter 0 41. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
60 Service and Maintenance (5) Or every two years, or when the CHANGE FUEL FILTER message in the Driver Information Center (DIC) comes on, whichever comes first. The fuel filter may need to be replaced more often based on biodiesel usage, when driving in climates with excessive dust, or when off-road driving or towing a trailer for extended periods. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Service and Maintenance 61 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 or specification, including fluids or lubricants not listed here, can be obtained from your dealer. Usage Fluid/Lubricant Automatic Transmission DEXRON ULV Automatic Transmission Fluid. Diesel Exhaust Aftertreatment Diesel Exhaust Fluid that meets ISO 22241 or displays the API Diesel System Exhaust Fluid Certification Mark. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL coolant. See Cooling System (Engine) 0 42 or Cooling System (Turbocharger) 0 46. Engine Oil Engine oil meeting the dexosD specification of the proper SAE viscosity grade. ACDelco dexosD is recommended. See Engine Oil 0 38. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
62 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 84121219 A3244C Fuel Filter 23304096 TP1015 Engine Oil Filter 55495105 PF66 Use only the specified filters. Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Service and Maintenance 63 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 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
64 Technical Data Technical Data
Vehicle Data Capacities and Specifications ...... 65 Engine Drive Belt Routing . . . . . 66 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Technical Data 65 Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants 0 61. Capacities Application Metric English Engine Cooling System* 19.1 L 20.2 qt Diesel Exhaust Fluid (DEF) Tank** 20.3 L 5.3 gal Engine Oil with Filter 6.6 L 7.0 qt *Engine cooling system capacity values are based on the entire cooling system and its components. **Do not overfill the DEF tank. See Diesel Exhaust Fluid 0 20. 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 3.0L L6 Turbo Diesel (LM2) Engine T Inline 6-Cylinder Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
66 Technical Data Engine Drive Belt Routing Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Index 67 Index A D Accessories and Modifications . . . 35 Diesel Air Cleaner/Filter, Engine ...... 41 Starting Your Engine ...... 14 Air Filter Diesel Exhaust Fluid ...... 20 Life System ...... 41 Diesel Exhaust Fluid (DEF) Automatic Warning Light ...... 12 Transmission Fluid ...... 40 Diesel Particulate Filter ...... 17 B Drive Belt Routing, Engine ...... 66 Driver Information Battery - North America ...... 51 Center (DIC) ...... 12 Biodiesel ...... 26 Brake E Exhaust ...... 24 Electrical System C Engine Compartment Fuse Block ...... 49 California Proposition Engine 65 Warning ...... 51 Air Cleaner/Filter ...... 41 Canadian Vehicle Owners ...... 2 Check Light (Malfunction Capacities and Specifications . . . . 65 Indicator) ...... 10 Check Compartment Overview ...... 37 Engine Light (Malfunction Cooling System ...... 42, 46 Indicator) ...... 10 Drive Belt Routing ...... 66 Cluster, Instrument ...... 6 Fan ...... 49 Cold Weather Operation ...... 27 Heater ...... 16 Cooling System ...... 42, 46 Oil Life System ...... 40 Overheating ...... 48 Starting Your Diesel ...... 14 Engine Air Filter Life System . . . . . 41 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
68 Index Engines Fuses M Diesel Fuel ...... 25 Engine Compartment Fuse Maintenance Exhaust Brake ...... 24 Block ...... 49 Records ...... 63 Exhaust Fluid G Maintenance Schedule ...... 56 Diesel ...... 20 General Information Recommended Fluids and F Service and Maintenance ...... 54 Lubricants ...... 61 Malfunction Indicator Lamp ...... 10 Fan H Engine ...... 49 Heater O Filter ...... 17 Engine ...... 16 Oil Replacement (Fuel) ...... 31 Engine ...... 38 Filter, I Engine Oil Life System ...... 40 Engine Air Cleaner ...... 41 Instrument Cluster ...... 6 Overheating, Engine ...... 48 Fluid Introduction ...... 2 P Automatic Transmission ...... 40 J Proposition 65 Warning, Fuel Jump Starting - North America . . . 51 California ...... 51 Additives ...... 25 Biodiesel ...... 26 L R Cold Weather Operation ...... 27 Lamps Recommended Fluids and Diesel Engines ...... 25 Malfunction Indicator (Check Lubricants ...... 61 Filling a Portable Fuel Engine) ...... 10 Records Container ...... 34 Lights Maintenance ...... 63 Filling the Tank ...... 31 Check Engine (Malfunction Replacement Parts Filter Replacement ...... 31 Indicator) ...... 10 Maintenance ...... 62 Running out of Fuel ...... 30 Diesel Exhaust Fluid (DEF) . . . . .12 Routing, Engine Drive Belt ...... 66 Top Tier ...... 24 Wait to Start ...... 11 Running out of Fuel ...... 30 Water in Fuel ...... 27 Fuel for Diesel Engines ...... 25 Chevrolet/GMC 3.0L Duramax Diesel Engine Supplement (GMNA-Localizing- U.S./Canada-13336148) - 2020 - CRC - 9/5/19
Index 69 S W Service Wait to Start Light ...... 11 Accessories and Water in Fuel ...... 27 Modifications ...... 35 Maintenance Records ...... 63 Maintenance, General Information ...... 54 Specifications and Capacities . . . . 65 Starting the Diesel Engine ...... 14 Supplement Using ...... 2 System Engine Air Filter Life ...... 41 T Top Tier Fuel ...... 24 Towing Trailer ...... 34 Trailer Towing ...... 34 Transmission Fluid, Automatic ...... 40 U Using This Supplement ...... 2 V Vehicle Canadian Owners ...... 2 20_MUL_3.0L_Duramax_Diesel_Engline_Supplement__COV_en_US_84458629B_2019SEP09.ai 1 9/4/2019 8:32:10 AM
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