Vehicle Care - GMC 2.8L Duramax Diesel 2020 Manual

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Vehicle Care

Vehicle Care
General Information
Accessories and
Modifications . . . . . . . . . . . . . . . . . 64
Vehicle Checks
Engine Compartment
Overview . . . . . . . . . . . . . . . . . . . . . 66
Engine Oil . . . . . . . . . . . . . . . . . . . . . 69
Engine Oil Life System . . . . . . . . 72
Automatic Transmission
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . 72
Engine Air Cleaner/Filter . . . . . . . 72
Cooling System . . . . . . . . . . . . . . . . 74
Engine Overheating . . . . . . . . . . . . 77
Battery (4-Cylinder
Pickup Only) . . . . . . . . . . . . . . . . . 78
Electrical System
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . 79
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . 87
General Information
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty.
Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
See the warranty manual.