Using Your Maintenance Schedule; Scheduled Maintenance Supplements - GMC 2003 C4C042 Owner's Manual

Part A: Scheduled Maintenance
Services

Using Your Maintenance Schedule

We at General Motors want to help you keep your
vehicle in good working condition. But we don't know
exactly how you'll drive it. You may drive very short
distances only a few times a week. Or you may drive
long distances all the time in very hot, dusty weather.
You may use your vehicle in making deliveries or in
many other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read the
following and note how you drive. If you have any
questions on how to keep your vehicle in good
condition, see your dealer.
This part tells you the maintenance services you should
have done and when you should schedule them. If you
go to your dealer for your service needs, you'll know
-
that GM trained and supported service people will
perform the work using genuine GM parts.
7-4
The proper fluids and lubricants to use are listed in
Part C. Make sure whoever services your vehicle uses
these. All parts should be replaced and all necessary
repairs done before you or anyone else drives
the vehicle.
This schedule is for vehicles that:
D
carry passengers and cargo within recommended
limits. You will find these limits on your vehicle's
GVW Rating label. See "Loading Your Vehicle" in
the Index.
D
are driven on reasonable road surfaces within legal
driving limits.
D
use the recommended fuel. See "Fuel" in the Index.

Scheduled Maintenance Supplements

If your vehicle has a Caterpillar R diesel engine, your
owner's manual is supplemented by the Caterpillar R
Diesel Engine Operation & Maintenance Manual. If
your vehicle has an Allison transmission, your owner's
manual is supplemented by an Allison Transmission
Operator's Manual. Always refer to these manuals for
related maintenance services.