Need help?Do you have a question about the GMC 2.8L Duramax Diesel 2020 and is the answer not in the manual?
Information on obtaining a French language manual from your dealer or website.
Explains this supplement provides specific info on unique components. Read with owner's manual.
Details warning lights, gauges, and indicators on the instrument cluster.
Covers Driver Information Center (DIC) and its menu items.
Explains how to program certain vehicle features and customize settings.
Covers procedures for starting the engine, winter operation, and heating systems.
Explains the DPF system, self-cleaning, and potential issues.
Details DEF system, filling, low levels, and quality issues.
Discusses brake systems, including the exhaust brake.
Covers fuel types, additives, cold weather operation, and water in fuel.
Provides guidance on towing, weight limits, and hitch requirements.
Covers Power Take-Off (PTO) systems and their operation.
Discusses accessories, modifications, and their impact on warranty.
Details engine compartment components and checks.
Explains fuse blocks and their function.
Covers exterior care and maintenance.
Importance of maintenance and dealer services for diesel engines.
Outlines owner checks and required services at intervals.
Lists recommended fluids and lubricants for the diesel engine.
Provides a log for recording service history.
Lists capacities and specifications for various vehicle systems.
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