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Need help?Do you have a question about the Chevrolet GMC 6.6L Duramax Diesel 2020 and is the answer not in the manual?
General| Horsepower | 445 hp @ 2800 rpm |
|---|---|
| Torque | 910 lb-ft @ 1600 rpm |
| Transmission | Allison 10-speed automatic |
| Compression Ratio | 16.0:1 |
| Turbocharger | Variable Geometry Turbocharger (VGT) |
| Fuel Type | Diesel |
| Displacement | 6.6L |
| Fuel System | Direct Injection |
| Bore x Stroke | 103 mm x 99 mm |
| Emissions | EPA Tier 3 |
| Oil Capacity | 10 quarts |
| Engine Type | Duramax 6.6L Turbo-Diesel V8 |
Obtain a French language manual from your dealer or website.
Contains specific information for unique vehicle components, use with owner's manual.
Details warning lights, gauges, and indicators on the instrument cluster.
Describes driver information center (DIC) and personalization options.
Explains how to customize vehicle features using audio system controls.
Explains the check engine light, its causes, and what to do if it illuminates.
Describes the wait-to-start light and its function during engine starting.
Details the DEF warning light and its relation to the diesel exhaust fluid system.
Explains the function and operation of the Power Take-Off (PTO) indicator light.
Covers starting the engine, winter cover, engine heater, and parking precautions.
Explains the DPF system, its self-cleaning process, and maintenance requirements.
Details the function and requirements of Diesel Exhaust Fluid (DEF).
Information on brake system, including exhaust brake operation.
Covers fuel types, additives, cold weather operation, and fuel filter replacement.
Safety warning about parking over flammable materials near hot exhaust parts.
Procedure for manually cleaning the DPF when self-cleaning is insufficient.
Instructions for locating and filling the Diesel Exhaust Fluid (DEF) tank.
Details DEF level warnings, speed limitations, and quality checks.
Information on DIC messages and speed limitations for DEF system issues.
Covers causes of water in fuel, warnings, and troubleshooting steps.
Procedure for priming the fuel system after it has lost prime.
Steps to restart the engine after running out of fuel.
Instructions for replacing the fuel filter.
Guidance on refueling the vehicle, including safety precautions.
What to do if the vehicle is accidentally refueled with gasoline.
Considerations for towing at high elevation and determining trailer weight.
Explains the PTO system, its switch, operating modes, speed control, and disengage conditions.
Describes different PTO operating modes: Preset, Variable, and Mobile.
Enabling PTO in-cab operation, including speed settings and factory defaults.
Details variable PTO enable conditions for in-cab and remote operation.
How to disengage PTO in various modes (in-cab, remote) and under specific conditions.
Discusses DPF cleaning during PTO operation and potential issues.
Explains functions for controlling PTO engine speed using cruise control or switches.
Lists factory settings for PTO features that can be altered via GM Service Tool.
Covers accessories, modifications, and aftermarket performance products.
Details checks for engine compartment, oil, fluids, filters, and electrical systems.
Instructions for checking, adding, and selecting the correct engine oil.
Details on checking and changing automatic transmission fluid, and recommended types.
Instructions for inspecting and replacing the engine air cleaner and filter.
Information on how the cooling system works and how to add coolant.
Explains engine coolant temperature gauge, steam indications, and troubleshooting steps.
Details the engine compartment fuse block, fuses, relays, and their usage.
Exterior care guidelines, including washing and cleaning.
Applies to diesel engines, covers required maintenance, and dealer services.
Provides owner checks, services at fuel stops, and oil change intervals.
Lists recommended fluids, lubricants, and replacement parts for the vehicle.
Instructions for recording scheduled maintenance and retaining receipts.
Explains how PTO and extended idle use affect maintenance intervals.
Lists normal required services based on mileage intervals.
Lists severe service intervals based on driving conditions and mileage.
Provides GM and ACDelco part numbers for common replacement parts.
Provides engine specifications, VIN code, and engine type.
Lists approximate capacities for engine cooling, DEF, oil, and other fluids.
Diagrams showing belt routing for single generator, dual generator, and fan drive systems.
