GMC 2003 C4C042, Owner'S Manual

Page: 94 / 386

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Starting the Diesel Engine
If you have a Caterpillar diesel engine, also refer to your
Caterpillar
R
Diesel Engine Operation & Maintenance
Manual for starting procedure.
For vehicles with the DURAMAX
t diesel engine, also
see “Starting Your DURAMAX
t Diesel Engine”
following.
To make starting easier in cold weather (below 32
_F or
0
_C), the proper viscosity engine oil should be used.
See “Engine Oil” in the Index. It’s also best to heat the
engine oil first. You can do this by using an engine
coolant heater.
NOTICE:
If you ever need to have your vehicle towed, see
the part of this manual that tells how to do it
without damaging your vehicle. See “Towing
Your Vehicle” in the Index.
Restarting the Diesel Engine While Moving
(Automatic Transmission)
If you have to restart the engine while the vehicle is
moving, you’ll first have to shift the automatic
transmission to NEUTRAL (N). This safety feature
prevents starting the engine when the transmission is
in a drive gear.
Stopping the Diesel Engine
If you have a Caterpillar diesel engine, see your
Caterpillar
R
Diesel Engine Operation &
Maintenance Manual.
1. Set the parking brake and shift to NEUTRAL (N)
or PARK (P).
2. Turn the ignition key to OFF.
If your vehicle has a two
-
speed axle, see “Rear Axle,
Two
-
Speed Electric Shift Control” or “Rear Axle,
Two
-
Speed Airshift Control” in the Index.