1997 GMC JIMMY Owner's Manual

What to Add
When you
do need brake fluid, use only DOT-3 brake
fluid
-- such as Delco Supreme 1 l@ (GM Part
No. 12377967). Use new brake fluid from a sealed
container only.
Always clean the brake fluid reservoir
cap and the area
around the
cap before removing it. This will help keep
dirt from entering the reservoir.
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.
NOTICE:
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.
0 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.
6-30

Brake Wear
Your vehicle has front disc brakes and rear drum brakes.
If you have the all-wheel drive option, your vehicle 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).
I A CAUTION: I
The brake wear warning sound means that soon
your brakes won't
work well. That could lead to
an accident. When you hear the brake wear
warning
sound, have your vehicle serviced.
NOTICE:
Continuing to drive with worn-out brake pads
could result in costly brake repair.
Some driving conditions or climates may cause a brake
squeal when the brakes are first applied or lightly
applied. This does not mean something is wrong
with
your brakes.
Properly torqued wheel nuts are necessary to help
prevent brake pulsation. When tires are rotated, inspect
brake
pads for wear and evenly torque wheel nuts in the
proper sequence to
GM specifications.
Your rear
drum brakes don't have wear indicators,
but
if you ever hear a rear brake rubbing noise: have
the rear brake linings inspected. Also, the rear brake
drums should be removed and inspected each time the
tires are removed
for rotation or changing. When you
have the front brake pads replaced. have the rear brakes
inspected, too.
Brake linings should always be replaced as complete
axle sets.
See
"Brake System Inspection" in Section 7 of this manual
under
Part C "Periodic Maintenance Inspections."
6-31

Brake Pedal Travel
See your dealer if the brake pedal does not return to
nor~nal height, or
if there is a rapid increase in pedal
travel.
This could be a sign of brake trouble.
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 app1yin.g the brakes a lew times.
Replacing Brake System Parts
The braking system on a modern 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
haw 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
Every new vehicle has a Delco Freedom@ battery. You
never have to add water to one of these. When it’s time
for a new battery, we recomlnend a Delco Freedom
battery. Get one that has the replacement number shown
on the original battery‘s label.
6-32

Vehicle Storage
If you’re not going to drive your vehicle for 25 days or
more, take off the black, negative (-) cable from the battely.
This will help keep your battery from running down.
Bulb Replacement
Before you replace any bulbs, be sure that all the lamps
are
off and the engine isn’t running. See “Replacement
Bulbs‘‘
in the Index.
,/i Cfi JTION:
Batteries have acid that can burn you and gas
that can explode.
You can be badly hurt if you
aren’t careful. See “Jump Starting” 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 ”Theft-Deterrent
Feature”
in the Index.
Halogen Bulbs
A CAU ION:
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.
6-33

Headlamps
Sealed Beam Lamps
1. Remove the screws from
the headlamp retainer.
2. Pull the headlamp out
and remove the retainer.
3. Unplug and remove the headlamp.
4. PILI^ in the new headlamp and put it in place.
5. Put the retainer on the headlamp and install and
tighten
the screws.
6-34

Composite Headlamps
I. Open the 1700d.
3 -.
4. Unplug the electrical connector.
5. Turn the bulb
counterclockwise to
remove It ,
3. 6. Put the new bulb into the headlamp lens assembly
and turn it clockwise until it is tight.
7. Plug in the electrical connector.
8. Put the headlamp lens assembly back into the
vehicle. Install and tighten the screws.
6-35

Front Turn Signal Lamps
If you have fog lamps, the fog lamp bracket must be
removed before
you can replace the front turn
signal lamps.
3 -.
3.
Turn the socket counterclockwise and pull it out.
Holding the base
of the bulb, pull the bulb straight
out of the socket.
Push the new bulb
into the socket until it clicks.
Put the socket back into
the turn signal lamp
usembly and turn ii clockwise until it locks
into place.
Front Sidemarker Lamps
1.
3 -.
3.
4.
5.
6.
7.
9. 8.
Remove the lens retaining screws.
Remove the sidernarker
lens from the radiator grille.
Turn hc bulb and socket one-quarter turn
counterclockwise.
Remove the
bulb and socket from the lens.
Install the
new bulb and socket to the
sidemarker lens.
Rotate the bulb and socket one-quarter
of a
turn clockwise.
Install the sidemarker lens to the radiator grille.
Insert the tabs into the locators.
Install and tighten the screws.
6-36

Taillamps
1. Open the endgate.
2. Remove the two screws
from the lamp assembly.
3. Pull the assembly away from the vehicle.
4. Turn the socket counterclockwise to remove it. Push
the tab in while you turn the socket
counterclockwise.
5. Holding the base of the bulb, pull the bulb straight
out of the socket.
6. Push the new bulb straight into the socket until
it clicks.
7. Put the socket into the lamp assembly and turn the
socket clockwise
until it locks into place.
8. Install the lamp assembly and screws.
9. Close the endgate.
Underhood Lamp
1. Disconnect the electrical connector from the
underhood lamp assembly.
2. Remove the screws.
3. Disconnect the ground wire.
4. Remove the lamp assembly from the hood.
5. Install the new bulb.
6. Replace the assembly. Install and tighten the screws.
7. Connect the ground wire.
8. Connect the electrical connector to the
lamp assembly.
6-37