change time GMC SIERRA 1994 Owner's Manual

24. DRIVE AXLE SERVICE? - Check readfront axle fluid level and
add
as needed. Check constant velocity joints and axle seals for
leaking.
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Locking differential - Drain fluid at first oil change and refill.
Check fluid level and add
as needed at subsequent oil changes. In
dusty areas, or trailer towing applications drain fluid at every
15,000 miles (24 135 kilometers) and refill.
Standard differential - Check fluid level and add as needed at
every
oil change. In dusty areas, or trailer towing applications,
drain fluid every
15,000 miles (24 I35 kilometers) and refill.
More frequent lubrication may be required on heavy-duty or
off-road use.
3500 HD Models - 3500 HD Models with applications requiring
extreme overload/trdiler tow conditions
and high speed conditions
(above 45 mph (72
kdh)) for extended periods of time must
change drive axle fluid every
3,000 miles (4828 kilometers) or 3
months, whichever comes first, OR must use 75W-140 synthetic
fluid meeting
GM specifications. See “Recommended Fluids and
Lubricants” at the end of this section for the proper fluid to use.
25.
BRAKE SYSTEM INSPECTION-f - When the engine oil is
changed, inspect the lines and hoses for proper hookup, binding, leaks,
cracks, chafing, etc. Check the parking brake adjust, and the fluid level
in the master cylinder. A low fluid level can indicate worn disc brake
pads which may need
to be serviced.
When the wheels are removed for rotation, inspect disc brake pads for
wear and rotors for surfxe condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including drums, wheel
cylinders, parking brake, etc., at the same time. Remove any
rust or dirt
from the wheel and mounting surfaces before mounting the wheel.
Inspect brakes more often if driving habits or conditions result in
frequent braking.
?A fluid loss in these systems may indicate a problem. Have them
inspected and repaired at once.
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0 The Commitment Plus Courtesy Transportation Program is not part of
the BUMPER
TO BUMPER Limited Warranty. GMC Truck reserves
the right to make any changes or discontinue the Courtesy
Transportation Program at any time without notification.
For additional program details contact your GMC Truck dealer.
Note: Because of insurance liability considerations, age restrict.ions
exist in some states when loaning dealer owned vehicles or obt\
aining
vehicles
from rental establishments. See your dealer for details.
Service Publications
Information on how to obtain Product Service Publications (PSP’s),
Subscriptions, Indexes and Summaries as described below is applicable only
in the fifty U.S. States (and the District of Columbia) and only for light
trucks with GVWR less than
10,000 pounds (4536 kg).
In Canada, information pertaining to Product Service Bulletins and Indexes
can be obtained by writing to:
General Motors
of Canada Limited
Service Publications Department
1908 Colonel Sam Dr.
Oshawa, Ontario L1H
8P7
GMC Truck regularly sends its dealers useful service bulletins about GMC
Truck products. GMC Truck monitors product performance in the field. We
then prepare bulletins for servicing our products better. Now, you can get
these bulletins too.
Bulletins cover various subjects. Some pertain to the proper use and care of
your vehicle. Some describe costly repairs. Others describe inexpensive
repairs which, if done on time with the latest parts, may avoid future costly
repairs. Some bulletins tell a technician how to repair a new or unexpected
condition. Others describe a quicker way to fix your vehicle. They can. help
a technician service your vehicle better.
Most bulletins apply to conditions affecting a small number of cars or
trucks. Your GMC Truck dealer or a qualified technician may have to
determine if a specific bulletin applies to your vehicle.
Individual PSP’s
If you don’t want to buy all the PSP’s issued by GMC Truck for all models
in the model year, you can buy individual PSP’s, such as those which may
pertain to a particular model. To do this,
you will first need to see our index
of PSP’s. It provides a variety of information. Here’s what you’ll find in the
index and how you can get
one:
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