1999 GMC JIMMY Rear brakes

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6-33 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 an ACDelco Freedom

battery. When it's time for a new battery, we recommend
an ACDelco Freedom battery. Get one that has the
replacement number shown on the original battery's label.
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.

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6-61
Fuse/Circuit
BreakerUsage
3 Cruise Control Module and
Switch, Body Control Module,
Heated Seats
4 Gages, Body Control Module,
Instrument Panel Cluster
5 Parking Lamps, Power Window
Switch, Body Control Module,
Ashtray Lamp
6 Steering Wheel Radio Controls
7 Headlamps Switch, Body control
Module, Headlamp Relay
8 Courtesy Lamps, Battery
Run
-Down Protection
9 HVAC Control Head (Manual)
10 Turn Signal
11 Cluster, Engine Control Module
12 Interior lightsFuse/Circuit
BreakerUsage
13 Auxiliary Power
14 Power Locks Motor
15 4WD Switch, Engine Controls
(VCM, PCM, Transmission)
16 Supplemental Inflatable Restraint
17 Front Wiper
18 Steering Wheel Radio Controls
19 Radio, Battery
20 Amplifier
21 HVAC (Manual), HVAC I
(Automatic), HVAC Sensors
(Automatic)
22 Anti
-Lock Brakes
23 Rear Wiper
24 Radio, Ignition

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7-46 Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Drive Axle Service
Check rear/front axle fluid level and add as needed.
Check constant velocity joints and axle seals for leaking.
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
-road use.
Brake System Inspection
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 may need to have your brakes
inspected more often if your driving habits or conditions
result in frequent braking.

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9-1
Section 9 Index
A
ccessory Power Outlets 2-67 . . . . . . . . . . . . . . . . . . . . . . . .
Adding Equipment to the Outside of Your Vehicle 6-3 . . . . . .
Adding Sound Equipment 3-41 . . . . . . . . . . . . . . . . . . . . . . . .
Add-On Equipment 4-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Bag
Adding Equipment 1
-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How Does it Restrain 1-28 . . . . . . . . . . . . . . . . . . . . . . . . . .
How it Works 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location 1-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Readiness Light 1-25, 2-77 . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing 1-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System 1-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What Makes it Inflate 1-27 . . . . . . . . . . . . . . . . . . . . . . . . . .
What You See After it Inflates 1-28 . . . . . . . . . . . . . . . . . . .
When Should it Inflate 1-27 . . . . . . . . . . . . . . . . . . . . . . . . .
Air Cleaner Filter 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 3-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants 6-66 . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance, Tire 6-47 . . . . . . . . . . . . . . . . . . . . . .
Aluminum Wheels, Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . .
Antenna, Fixed 3-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning Light 2-80, 4-7 . . . . . . . . .
Anti-Lock Brakes 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appearance Care and Materials 6-57 . . . . . . . . . . . . . . . . . . . . Arbitration Program 8
-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Armrest, Storage 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ashtrays 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio Steering Wheel Controls 3-40 . . . . . . . . . . . . . . . . . . . .
Audio Systems 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Headlamp System 2-49 . . . . . . . . . . . . . . . . . . . . . .
Automatic Transmission
Check 7
-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 6-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Park Mechanism Check 7-44 . . . . . . . . . . . . . . . . . . . . . . . .
Shifting 2-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your Engine 2-19 . . . . . . . . . . . . . . . . . . . . . . . . . .
Axle
Front 6
-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backglass Wiper, Blade Replacement 6-41 . . . . . . . . . . . . . .
Battery 6-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charge Light 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement, Keyless Entry 2-8 . . . . . . . . . . . . . . . . . . . . .
Run-Down Protection 2-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 5-3, 5-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-2
BBB Auto Line 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Better Business Bureau Mediation 8-4 . . . . . . . . . . . . . . . . . . .
Blizzard, Driving In 4-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Fluid 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake, Parking 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake System Warning Light 2-79 . . . . . . . . . . . . . . . . . . . . . .
Brakes
Adjustment 6
-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-33 . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wear 6-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake-Transmission Shift Interlock Check 7-43 . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-8 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Brightness Control 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-34, 6-65 . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Roadside Assistance 8-8 . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-65 . . . . . . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-9, 2-38, 4-40, 4-51 . . . . . . . . . . . . . . . .
Care of Your Cassette Tape Player 3-42 . . . . . . . . . . . . . . . . . .
Cargo Cover 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cargo Tie Downs 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Front Passenger Position 1-30 . . . . . . . . . . . . . . . . . . . Certification/Tire Label 4
-42 . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains
Safety 4
-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Light 2-77 . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gages Light 2-85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-56 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-56 . . . . . . . . . . . . . . . . . . . . . . . . . .
Child Restraints 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Seat Positions 1-50 . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in a Rear Outside Seat Position 1-48 . . . . . . . . . . .
Securing in the Right Front Seat Position 1-50 . . . . . . . . . .
Top Strap 1-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where Not to Put 1-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where to Put 1-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Breakers and Fuses 6-59 . . . . . . . . . . . . . . . . . . . . . . .
Cleaner, Air 6-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum Wheels 6
-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior Lamps and Lenses 6-54 . . . . . . . . . . . . . . . . . . . . .
Fabric 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside of Your Vehicle 6-50 . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Plastic Components 6-52 . . . . . . . . . . . . . . . . . . . . .
Leather 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside of Your Vehicle 6-53 . . . . . . . . . . . . . . . . . . . . . . . .
Stains 6-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .