Chevrolet GMC Duramax 2023 User Manual

Chevrolet/GMC 6.6L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-16504481) - 2023 - CRC - 9/26/22
10 Driving and Operating
Driving and Operating
Starting and Operating
Starting the Diesel Engine . . . . . . . . . . . . . . 10
Winter Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Extended Parking . . . . . . . . . . . . . . . . . . . . . . . 16
Diesel Particulate Filter
Diesel Particulate Filter . . . . . . . . . . . . . . . . . 16
Diesel Exhaust Fluid
Diesel Exhaust Fluid . . . . . . . . . . . . . . . . . . . . 19
Brakes
Exhaust Brake . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Fuel for Diesel Engines . . . . . . . . . . . . . . . . . 23
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Cold Weather Operation . . . . . . . . . . . . . . . . 24
Water in Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Running Out of Fuel . . . . . . . . . . . . . . . . . . . . 27
Fuel Filter Replacement . . . . . . . . . . . . . . . . . 27
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . 28
Filling a Portable Fuel Container . . . . . . . . 29
Trailer Towing
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Conversions and Add-Ons
Power Take-Off (PTO) . . . . . . . . . . . . . . . . . . . 30
Starting and Operating
Starting the Diesel Engine
The diesel engine starts differently than a
gasoline engine.
Caution
If the steering wheel is turned until it
reaches the end of its travel, and is held
in that position while starting the vehicle,
damage may occur to the hydraulic
power steering system and there may be
loss of power steering assist.
Move the shift lever to P (Park) or
N (Neutral). To restart the engine when the
vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you could
damage the transmission. Shift to P (Park)
only when the vehicle is stopped.

Chevrolet GMC Duramax 2023 Specifications

General

Brand	Chevrolet
Model	GMC Duramax 2023
Category	Automobile
Language	English