1997 GMC JIMMY brakes

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

Short Trip/City Maintenance Schedule
The services shown in this schedule LIP to 100.000 miles
( I66 000 km) should be performed after 100,000 miles
( 166 000 km) at the same intervals. The services shown
at 150.000 miles (240
000 km) should be performed at
the
same interval after 150.000 miles (240 000 km).
See "Owner Checks and Services" and "Periodic
Maintenance Inspections" following.
Footnotes
-f 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. ball joints. steering
linkage and transfer case shift linkage. parking brake
cable guides, propshaft splines. Lulivel-sal joints and
brake
pedal springs.
+ A good time to check your brakes is during tire
rotation. See "Brake System Inspection" under "Periodic
Maintenance Inspection"
in Part C of this schedule.
'i::k Drive axle service (see "Recommended Fluids and
Lubricants"
in the Index for proper lubricant to use):
0
0
0
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 tluid and refil
every 15,000 miles
(25 000 km).
Standard Differential
-- Check fluid level and add
tluid
as needed at every oil change. If driving in
dusty areas or towing a trailer, drain fluid and refil
every
15,000 miles (25 000 km).
More frequent lubrication may be required
for
heavy-duty or off-road use.
1
1
7-7

I Long Trip/Highway Maintenance Schedule
The services shown in this schedule up to 100,000 miles
( I66 000 km) should be performed after 100,000 miles
( 166 000 km) at the same intervals. The services shown
at
150,000 miles (240 000 km) should be performed at
the same interval after
150,000 miles (240 000 km).
See "Owner Checks and Services" and "Periodic
Maintenance Inspections'' following.
Footnotes
3' The U.S. Environmental Protection Agency 01- 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 Ihe front suspension, ball joints, steering
linkage and transfer case
shift linkage, parking brake
cable guides, propshaft splines, universal
joints and
brake pedal springs.
+ A good time to check your brakes is during tire
rotation. See "Brake System Inspection'' under "Periodic
Maintenance Inspections"
in Part C of this schedule.
Drive axle service (see "Recommended Fluids and
Lubricants"
in the Index for proper lubricant to use):
0 Locking Differential -- Drain fluid and refill at first
engine oil change.
At subsequent oil changes, check
fluid level and
add fluid as needed.
0 Standard Differential -- Check fluid level and add
fluid as needed at every engine
oil change.
More frequent lubrication may be required for
heavy-duty or off-road use.
7-30

Ignition Transmission Lock Check While parked, and with
the parking brake set, try to turn
the ignition key to LOCK
in ex11 shift lever position.
0 With an automatic transmission. the key should turn
to LOCK only when the shift lever is in PARK (P).
With a manual transmission, the key should turn to
LOCK only when the shift lever is in REVERSE (R).
On vehicles with a key release button, try to turn the key
to LOCK witl~out pressing the button. The key should
turn
to LOCK only when you press the key button.
On all ve.hicles, the key should come out only in LOCK. Parking Brake and Automatic Transmission
PARK
(P) Mechanism Check
CAUTION:
--
When you are doing this check, your vehicle
could begin to move.
You or others could be
injured and property could be damaged. Make
sure there
is room in front of your vehicle in case
it begins to roll. Be ready to apply the regular
brake at once should the vehicle begin
to move.
Park
on a fairly steep hill. with the vehicle facing
downhill. Keeping your
foot on the regular brake. set the
parki ng brake.
e To check the parking brake's holding ability:
With the engine running and transmission
in
NEUTRAL (N). slowly remove foot pressure from
the regular brake pedal. Do this until the vehicle is
held by the parking brake only.
e To check the PARK (P) meohanisrn's holding ability:
With the engine running, shift to PARK (P). Then
release
al I brakes.
7-49

Drive Axle Service
Check rear/front axle fluid le~~el and add as needed.
Check constant velocity .joints and axle seals for leaking.
Transfer Case (All-Wheel Drive) Inspection
Every 12 months or at oil cl~ange intervals. check front
axle and transfer case and add lubricant when necessary.
Check vent hose at transfer case for kinks and
proper installation.
Transfer Case (Four-wheel Drive)
Inspection
Every 12 months or at oil change intervals, check front
axle and transfer case and add lubricant when necessary.
Check vent hose at transfer case for kinks and proper
installation. More frequent lubrication may
be required
on
off-~-oad use.
Brake System Inspection (Two-Wheel and
Four-wheel Drive)
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding. leaks. cracks.
chafing. etc. Inspect disc brake pads for
wear and rotors
for surface condition.
Also inspect drum brake linings
for wear and cracks. Inspect
other brake parts, including
drums.
wl~eel cylinders. calipers. parking brake, etc.
Check parking brake adjustment.
You may need to have
your brakes inspected more often
if your driving habits
or conditions result in freq~~ent braking.
Brake System Inspection (All-Wheel-Drive)
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding. leaks, cracks.
chafing. etc. Inspect disc brake pads for
wear and rotors
for surface condition. Inspect other brake parts,
including calipers. parking brake. etc. Check parking
brake adjustment.
You n~ay need to have your brakes
inspected more often if yo11r driving habits or conditions
result
in freyuent braking.

1997 GMC SERVICE PUBLICATIONS ORDERING INFORMATION
The following publications covering the operation and servicing of your vehicle can be purchased by filling G
the Service Publication Order Form in this book and mailing it in with your check, money order,
or credit card information to Helm, Incorporated (address below.)
CURRENT PUBLICATIONS FOR 1997 GMC
SERVICE MANUALS
Service Manuals have the diagnosis and repair information
on engines, transmission, axle, suspension, brakes,
electrical, steering, body, etc.
RETAIL SELL PRICE:
$90.00
TRANSMISSION, TRANSAXLE, TRANSFER CASE
UNIT REPAIR MANUAL
This manual provides information on unit repair service
procedures, adjustments and specifications for the
1997
GM transmissions, transaxles and transfer cases.
RETAIL SELL PRICE:
$40.00
SERVICE BULLETINS
Service Bulletins give technical service information needed
to knowledgeably service General Motors cars and trucks.
Each bulletin contains instructions
to assist in the
diagnosis and service of your vehicle.
PLEASE COMPLETE THE ORDER FORM SHOWN ON
THE FOLLOWING PAGE AND MAIL TO:
Helm, Incorporated P.0. Box 07130 Detroit, MI 48207
OWNER’S INFORMATION
Owner publications are written directly for Owners and
intended
to provide basic operational information about tl
vehicle. The owner’s manual will include the Maintenancl
Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner’s Manual and
Warranty Booklet.
RETAIL SELL PRICE:
$1 5.00
Without Portfolio: Owner’s Manual only.
RETAIL SELL PRICE:
$1 0.00
CURRENT & PAST MODEL ORDER FORMS
Service Publications are available for current and past
model
GM vehicles. To request an order form, please
specify year and model name
of the vehicle.
OR ORDER TOLL FREE: 1-800-782-4356
Monday-Friday 8:OO AM - 6:OO PM Eastern Time
For Credit Card Orders Only (VISA-Mastercard-Discovet

Theft ......................................... 2-12
THEFTLOCK ............................... 3- 1 7
Thermostat .................................... 6-26
Third Gear. Manual Transmission
.................. 2-2 I
Tilt Steering Wheel ............................. 2-38
Time. Setting ................................... 3-6
Tire Chains
.................................... 6-48
Tires Alignme.
nt and Balance ........................ 6-46
BuyingNew
................................. 6-44
Changing a Flat
.............................. 5-23
Cleaning
.................................... 6-55
Inflation
............................... 6-41.7-46
Inspection and Rotation
........................ 6-42
Pressure
.................................... 6-41
Temperature
................................. 6-46
Traction
.................................... 6-46
Treadwear
................................... 6-45
Uniform Quality Grading
....................... 6-45
Wear Indicators
.............................. 6-44
When It’s Time
for New ....................... 6-44
Topstrap
..................................... 1-38
TorqueLock
................................... 2-32
Towing a Trailer ................................ 4-45
Towing. Recreational Vehicle
..................... 4-4 1
Towing Your Vehicle ............................. 5-7
Trailer Brakes
..................................... 4-49
Torque. Wheel
Nut ......................... 5-32. 6-63
Driving on
Grades ............................ 4-52
Hitches
..................................... 4-48
Driving with a Trailer .......................... 4-50
Maintenance When Towing
..................... 4-54
Parking
on Hills .............................. 4-52
Safety Chains
................................ 4-49
Total Weight on Tires
.......................... 4-48
Towing
..................................... 4-45
Weight
............................ [ ........ 4-46
Wiring Harness
............................... 4-55
Transfer Case
.................................. 6-21
Electronic
................................... 2-26
Manual ..................................... 2-24
Automatic
................................... 6-14
Manual
..................................... 6-18
Transmitters. Keyless
Entry ........................ 2-6
Transportation. Courtesy
.......................... 8-8
Trip. Before Leaving ............................ 4-34
Trip Odometer
................................. 2-71
Tongueweight
............................... 4-47
Turnsignals
................................. 4-51
Transmission Fluid
TTYUsers
..................................... 8-4
Turn Signal and Lane Change Signals
............... 2-39
Turn Signals When Towing a Trailer
................ 4-51
Underbody Maintenance
........................ 6-56
Underhood Lamp Bulb Replacement ................ 6-37
9-10