Page 283 of 404

Brakes
Brake Fluid
Your brake master cylinder
reservoir
is here. It is filled
I with DOT-3 brake fluid.
There are
only two reasons why the brake fluid level in the
reservoir might go down. The first is that
the brake fluid
goes down to an acceptable level during normal brake lining wear. When new linings are put
in, the fluid level
goes back
up. The other reason is that fluid is leaking out
of the brake system. If it is, you should have your brake
system fixed, since a leak
means that sooner or later your
brakes
won’t work well, or won’t work at all.
So, it isn’t a good idea to “top off’ your brake fluid.
Adding
brake fluid won’t correct a leak. If you add fluid
when your linings are worn, then you’ll have
too much
fluid
when you get new brake linings. You should add
(or remove) brake fluid,
as necessary, only when work is
done on the brake hydraulic system.
A CAUTION0
If you have too much brake fluid, it can spill
on the engine. The fluid will burn if the engine
is hot enough. You or others could be burned,
and your vehicle could be damaged. Add brake
fluid only when work
is done on the brake
hydraulic system.
Refer to the Maintenance Schedule to determine when to
check your brake fluid. See “Periodic Maintenance
Inspections”
in the Index.
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Checking Brake 1
You can check the brake fluid without taking off the cap.
Just look at
the window on the brake fluid reservoir. The
fluid level should be above MIN. If it isn't, have your
brake system checked to see if there is a leak. After
work
is done on the brake hydraulic system,
make sure the level is above
MIN and below the top
of the window.
What to 1
When you do need brake fluid, use only DOT-3
brake fluid -- such as Delco Supreme 11 @ (GM Part
No. 1052535). Use new brake fluid from a sealed
container
only, and always clean the brake fluid
reservoir cap before removing
it.
I I
I A CAUTION: I
With the wrong kind of fluid in your brake
system, your brakes may not work well, or they
may not even work at
all. This could cause a
crash. Always use the proper brake fluid.
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Page 285 of 404

NOTICE:
0
0
Using the wrong fluid can badly damage
brake system parts. For example,.just a few
drops of mineral-based oil, such
as engine
oil,
in your brake system can damage brake
system parts
so badly that they’ll have to be
replaced. Don’t let someone put in the
wrong kind of fluid.
If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake
fluid on your vehicle.
If you do, wash it
off immediately. See &‘Appearance Care”
in
the Index.
Brake Wear
If you have a C 3500 HD model, it has four-wheel
disc brakes.
Disc brake pads have built-in wear indicators that
make a high-pitched warning sound when the brake
pads are worn and
new pads are needed. The sound
may come and
go or be heard all the time your vehicle
is moving (except when you are pushing on the brake
pedal firmly).
A’ CAUTION:
I
The brake wear warning sound means that
sooner or later your brakes won’t work well.
That could lead to an accident. When you hear
the brake wear warning sound, have your vehicle serviced.
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Fuse Usage
15 DRL Relay, Fog Lamp Relay
Underhood Fusemelay Center
16
17
18
19
20
21
22
23 24 Front and Rear Turn
Signals, Back-up
Lamps, BTSI Solenoid
Radio (Ignition)
4WALNCM, ABS, Cruise Control
Radio (Battery)
PRNDL, Automatic Transmission,
Speedometer, Check Gages Warning Light
Not Used
Not Used
Not Used
Front Axle, 4WD Indicator Lamp, TP2 Relay
(Gasoline Engine)
A Power Door Lock, Six-Way Power Seat,
Keyless Entry Module
B Power Windows The underhood
fusehelay center is located in the rear
of
the engine compartment near the brake fluid reservoir.
Move the retainer clips for the cover to access the fuse
block.
You can remove fuses with a fuse extractor. The fuse
extractor
is mounted to the interior fuse block. To
remove fuses if
you don’t have a fuse extractor, hold the
end of the fuse between your thumb and index finger
and
pull straight out.
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Page 332 of 404

Short TripKity Maintenance Schedule -- Gasoline Engines
The services shown in this schedule up to 100,000 miles
(1 66 000 km) should be performed after 100,000 miles
(166 000 km) at the same intervals.
Footnotes
T The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that
the failure to perform this maintenance item will
not
nullify the emission warranty or limit recall liability
prior
to the completion of the vehicle‘s useful life.
We, however, urge that all recommended
maintenance services be performed at the indicated
intervals and the maintenance be recorded.
# Lubricate the front suspension, kingpin bushings,
steering linkage, transmission shift linkage, transfer
case shift linkage, parking brake cable guides, rear
driveline center splines, front axle propshaft splines
and brake pedal springs. Ball joints and kingpin
bushings should not be lubricated unless their
temperature is 10°F
(- 12°C) or higher, or they
could be damaged.
:f: :1:
0
0
0
e
Drive axle service:
Locking Differential
-- Drain fluid and refill at first
engine
oil change. At subsequent oil changes, check
fluid level and add fluid as needed. If driving in
dusty areas or towing a trailer, drain fluid and refill
every 15,000 miles
(25 000 km).
Standard Differential -- Check fluid level and add
fluid
as needed at every oil change. If driving in
dusty areas or towing a trailer, drain fluid and refill
every
I5,OOO miles (25 000 km).
More frequent lubrication may be required for
heavy-duty or off-road
use.
3500 HD Models with applications requiring extreme
overload/trailer towing conditions and high-speed
(above
45 mph or 70 kmh) conditions for extended
periods
of time must have the drive axle fluid changed
evey
30,000 miles (50 000 km). See “Recommended
Fluids and Lubricants’’
in this section.
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![GMC SIERRA 1996 Owners Manual I Short Trip/City Maintenance Schedule -- Gasoline Engines I
3,000 Miles (5 000 km)
c] Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Servic GMC SIERRA 1996 Owners Manual I Short Trip/City Maintenance Schedule -- Gasoline Engines I
3,000 Miles (5 000 km)
c] Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Servic](/manual-img/44/57860/w960_57860-332.png)
I Short Trip/City Maintenance Schedule -- Gasoline Engines I
3,000 Miles (5 000 km)
c] Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals for leaking.
**
6,000 Miles (10 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle seals for leaking.
**
0 Rotate tires. See “Tire Inspection and Rotation”
in the Index for proper rotation pattern and
additional information. During
tire rotation,
check brake calipers for freedom of movement. Refer to
the appropriate GM service manual for
proper caliper service procedures.
I DATE I ACTUALMILEAGE I SERVICED BY I
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Short Trip/City Maintenance Schedule -- Gasoline Engines
15,000 Miles (25 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
0 Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add
fluid
as needed. Check constant velocity
joints and axle seals for leaking.
**
0 For Two-Wheel-Drive vehicles only: Clean
and repack the front wheel bearings (or
at
each brake relining, whichever occurs first).
Vehicles With GVWR Above 8,500 lbs.
Only: Inspect shields and underhood
insulation
for damage or looseness. Adjust
or replace
as required. This is CE Noise Emission
Control Service. Applicable only to vehicles sold in
the United Stcrtes.
0 If your engine has a thermostatically
controlled cooling fan, inspect all hoses and
ducts for proper
hook-up (or every 12
months, whichever occurs first). Be sure the
valve works properly. This is n Noise Elnission
Contml Sot*vic'e. Applicuhle only to vehicles sold in
the United Stcrtes.
DATE ACTUAL MILEAGE SERVICED BY:
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I Short TripKity Maintenance Schedule -- Gasoline Engines I
18,000 Miles (30 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Cuntrul Service.
0 Lubricate chassis components; see footnote #
(or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add fluid
as needed. Check constant velocity joints and
axle
seals for leaking. **
Rotate tires. See “Tire Inspection and Rotation’’
in the Index for proper rotation pattern and
additional information. During tire rotation,
check brake calipers for freedom of movement. Refer to the appropriate
GM service manual for
proper caliper service procedures.
I DATE I ACTUAL MILEAGE SERVICED BY:^
21,000 Miles (35 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An En?.issiorz Control Service.
17 Lubricate chassis components; see footnote ##
(or every 3 months, whichever occurs first).
0 Check readfront axle fluid level and add
fluid as needed. Check constant velocity
joints and axle seals
for leaking. **
DATE SERVICED BY ACTUAL MILEAGE
7-10
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