Page 279 of 412
6-10 Engine Compartment Overview
When you lift the hood, you'll see these items:
A. Battery
B. Coolant Recovery Tank
C. Engine Oil DipstickD. Engine Oil Fill
E. Transmission Dipstick
F. Engine Air Cleaner/FilterG. Power Steering Reservoir
H. Brake Master Cylinder
I. Windshield Washer Fluid
Page 301 of 412

6-32 Brake Adjustment
Every time you make a brake stop, your disc brakes
adjust for wear.
If your brake pedal goes down farther than normal, your
rear drum brakes may need adjustment. Adjust them by
backing up and firmly applying the brakes a few times.
Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together if
the vehicle is to have really good braking. Your vehicle
was designed and tested with top
-quality GM brake
parts. When you replace parts of your braking
system
-- for example, when your brake linings wear
down and you have to have new ones put in
-- be sure
you get new approved GM replacement parts. If you
don't, your brakes may no longer work properly. For
example, if someone puts in brake linings that are wrong
for your vehicle, the balance between your front and
rear brakes can change
-- for the worse. The braking
performance you've come to expect can change in many
other ways if someone puts in the wrong replacement
brake parts.
Battery
Your new vehicle comes with a maintenance free
ACDelco battery. When it's time for a new battery, get
one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
battery. See ªEngine Compartment Overviewº in the
Index for battery location.
WARNING: Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
If you have a diesel engine, you have two batteries. The
primary battery is located on the passenger's side of the
engine compartment. The second battery is located on
the driver's side framerail.
Page 302 of 412

6-33 Vehicle Storage
If you're not going to drive your vehicle for 25 days
or more, remove the black, negative (
-) cable from
the battery. This will help keep your battery from
running down.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
-Deterrent
Featureº in the Index.
Bulb Replacement
For any bulb changing procedure not listed in this
section, contact your GM dealer service department.
Before replacing any bulbs, make sure all lamps are off
and the vehicle is not running. See ªReplacement Bulbsº
in the Index.
Halogen Bulbs
CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Headlamps
You have either a sealed beam headlamp or a
composite system.
Page 303 of 412
6-34
Sealed Beam Headlamp
1. Remove the four screws from the headlamp retainer.
Pull the retainer out and set it aside.
2. Unplug the lamp assembly from the connector.
3. Remove the old headlamp
4. Install a new headlamp into the assembly.
5. Plug the assembly back into the connector.
6. Reassemble the headlamp assembly with the retainer.Composite Headlamps
1. Open the hood.
2. Locate the rear side of each of the headlamps.
3. Without removing the headlamp assembly itself,
remove the bulb socket from the back of the headlamp
on the driver's side. Turn the bulb counterclockwise
one quarter turn to remove it from the socket.
4. On the passenger's side, turn the bulb clockwise one
quarter turn. Also, to remove the bulb on the
passenger's side, you will need to move the battery.
Do not touch the glass part of the bulb.
Page 332 of 412
6-63
POSITION NAME CIRCUITS PROTECTED
15. DRL DRL Relay
16. TURN B/U
Front Turn, RR Turn, Back
-up Lamps, BTSI Solenoid
17.
RADIO
-1Radio (Ign, Accy), Upfitter Provision Relay
18. BRAKE 4WAL PCM, ABS, Cruise Control
19.
RADIO
-BRadio (Battery), Power Antenna
20. TRANS PRNDL, Automatic Transmission
21. SECURITY Passlock
22. RR DEFOG Rear Window Defog
23. NOT USED Not Used
24. RR HVAC RR HVAC Controls, HIGH, MED, LOW Relays
A. PWR ACCY
Power Door Lock, Six
-Way Power Seat, Keyless Entry
Illumination Module
B. PWR WDO Power Windows