brakes GMC ENVOY XUV 2004 Owner's Guide

Brake Wear
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 ®rmly).
{CAUTION:
The brake wear warning sound means that
soon your brakes will not 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 ®rst 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 tighten wheel nuts in
the proper sequence to GM torque speci®cations.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal 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.
5-39

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 Ð for example, when your brake linings
wear down and you need new ones put in Ð be sure
you get new approved GM replacement parts. If you do
not, 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 Ð for the worse. The braking
performance you have 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
ACDelcožbattery. When it is time for a new battery, get
one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
ž
battery. SeeEngine Compartment Overview on
page 5-12for 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.
Vehicle Storage
If you are 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
are not careful. See
Jump Starting on
page 5-41
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 (RDS Radios) on page 3-117.
5-40

(A) Light Truck (LT-Metric) Tire:The United States
version of a metric tire sizing system. The letter ªLTº as
the ®rst two characters in the tire size means a light
truck tire engineered to standards set by the U. S. Tire
and Rim Association.
(B) Tire Width:The three-digit number indicates the
tire section width in millimeters from sidewall to sidewall.
(C) Aspect Ratio:A two-digit number that indicates
the tire height-to-width measurements. For example, if
the tire size aspect ratio is ª75,º as shown in item ªCº of
the illustration, it would mean that the tire's sidewall is
75% as high as it is wide.(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire. The letter
ªRº means radial ply construction; the letter ªDº means
diagonal or bias ply construction; and the letter ªBº
means belted-bias ply construction.
(E) Rim Diameter:Diameter of the wheel in inches.
(F) Service Description:The service description
indicates the load range and speed rating of a tire. The
load index can range from 1 to 279. Speed ratings
range from ªAº to ªZº. The light truck tire size example
above shows dual or single tire con®gurations.Tire Terminology and De®nitions
Air Pressure:The amount of air inside the tire pressing
outward on each square inch of the tire. Air pressure
is expressed in pounds per square inch (psi) or
kilopascal (kPa).
Accessory Weight:This means the combined weight
of optional accessories. Some examples of optional
accessories are, automatic transmission, power steering,
power brakes, power windows, power seats, and air
conditioning.
Aspect Ratio:The relationship of a tire's height to
its width. Light Truck (LT-Metric) Tire
5-57

Tire Chains
{CAUTION:
Don't use tire chains. There's not enough
clearance. Tire chains used on a vehicle
without the proper amount of clearance can
cause damage to the brakes, suspension or
other vehicle parts. The area damaged by the
tire chains could cause you to lose control of
your vehicle and you or others may be injured
in a crash. Use another type of traction device
only if its manufacturer recommends it for use
on your vehicle and tire size combination and
road conditions. Follow that manufacturer's
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it's contacting your vehicle, and don't
spin your wheels. If you do ®nd traction
devices that will ®t, install them on the
rear tires.
Accessory In¯ator
Your vehicle may be equipped with an air in¯ator
system. You can in¯ate things like basketballs and
bicycle tires. Also, you can use it to bring your tire
pressure up to the proper pressure. It is not designed to
in¯ate large objects which will require more than ®ve
minutes to in¯ate, such as an air mattress.
The air in¯ator is located in
the rear compartment on
the driver's side of the
vehicle behind an
access cover.
Pull the tab on the cover to access the in¯ator.
The air in¯ator kit may be located in the glove box. The
kit includes a 22 ft (6.7 m) hose with three nozzle
adapters.
5-68

Fuses Usage
8 Automatic Transfer Case
9 Windshield Wipers
10 Powertrain Control Module B
11 Fog Lamps
12 Stop Lamp
13 Cigarette Lighter
14 Ignition Coils
15 Blank
16 TBD-Ignition 1
17 Crank
18 Air Bag
19 Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25 Automatic Shift Lock Control System
26 Engine 1
27 Back-Up
28 Powertrain Control Module 1
29 Oxygen Sensor
30 Air Conditioning
31 Truck Body Controller
32 Trailer
33 Anti-Lock Brakes (ABS)Fuses Usage
34 Ignition A
35 Blower Motor
36 Ignition B
50 Passenger's Side Trailer Turn
51 Driver's Side Trailer Turn
52 Hazard Flashers
53 Electric Adjustable Pedal
54 A.I.R. Solenoid
56 A.I.R. Pump
Relays Usage
37 Blank
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Wipers/Washer
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
55 A.I.R. Solenoid
Miscellaneous Usage
48 Instrument Panel Battery
49 Blank
5-95

Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger's Side High-Beam
Headlamp
3Passenger's Side Low-Beam
Headlamp
4 Back-Up-Trailer Lamps
5Driver's Side High-Beam
Headlamp
6Driver's Side Low-Beam
Headlamp
7 Wash
8 Automatic Transfer Case
9 Windshield Wipers
10 Powertrain Control Module B
11 Fog Lamps
12 Stop Lamp
13 Cigarette Lighter
14 Ignition Coils
15 Canister Vent
16 TBD-Ignition 1
17 Crank
18 Air Bag
19 Electric Brake
20 Cooling FanFuses Usage
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25Automatic Shift Lock Control
System
26 Engine 1
27 Back-Up
28 Powertrain Control Module 1
30 Air Conditioning
31 Truck Body Controller
32 Trailer
33 Anti-Lock Brakes (ABS)
34 Ignition A
35 Blower Motor
36 Ignition B
50 Passenger's Side Trailer Turn
51 Driver's Side Trailer Turn
52 Hazard Flashers
53 Oxygen Sensor Bank A
54 Oxygen Sensor Bank B
55 Injector Bank A
56 Injector Bank B
5-97

Fuses Usage
23Endgate Module/Driver Seat
Module
24 Unlock
25 Roof Module
26 OH Battery/OnStar
27 Midgate
28 Sunroof
29 RainsenseŸ Wipers
30 Parking Lamps
31Truck Body Controller 4 Cruise
Control
32 Truck Body Controller 5
33 Front Wipers
34 Vehicle Stop
35 Blank
36Heat Ventilation Air
Conditioning B
37 Front Parking LampsFuses Usage
38 Left Turn Signal
39Heat Ventilation Air
Conditioning 1
40 Truck Body Controller 4
41 Radio
42 Trailer Park
43 Right Turn Signal
44 Heat Ventilation Air Conditioning
45 Blank
46 Auxiliary Power 1
47 Ignition 0
48 Four-Wheel Drive
49 Blank
50 Truck Body Controller Ignition
51 Brakes
52 Truck Body Controller Run
5-100

Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may write to:
Transport Canada
330 Sparks Street
Tower C
Ottawa, Ontario K1A 0N5
Reporting Safety Defects to General
Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, we certainly hope you'll notify us.
Please call us at 1-800-GMC-8782 (1-800-462-8782),
or write:
Pontiac-GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE: $120.00
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments, and speci®cations for GM
transmissions, transaxles, and transfer cases.
RETAIL SELL PRICE: $50.00
7-11

Audio System(s) (cont.)
Understanding Radio Reception...................3-119
XMŸ Satellite Radio Antenna System...........3-121
Automatic Headlamp System............................3-14
Automatic Transfer Case..................................2-32
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-29
B
Backglass Wiper Blade Replacement.................5-52
Backing Up....................................................4-63
Battery..........................................................5-40
BATTERY NOT CHARGING.............................3-56
Battery Replacement......................................... 2-6
Battery Run-Down Protection............................3-18
Before Leaving on a Long Trip.........................4-35
Before You Drive...........................................3-104
Before You Go Off-Roading..............................4-15
Brake
Parking......................................................2-35
System Warning Light..................................3-36
Brake Adjustment............................................5-39
Brake Fluid....................................................5-37
Brake Pedal, Throttle.......................................2-27
Brake Pedal Travel.........................................5-39
Brake Wear...................................................5-39
Brakes..........................................................5-37Braking........................................................... 4-5
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-24
Bulb Replacement...........................................5-48
Headlamps.................................................5-48
Replacement Bulbs......................................5-50
Taillamps and Turn Signal Lamps..................5-49
Buying New Tires...........................................5-64
C
California Fuel.................................................. 5-5
Canada........................................................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations..........................5-101
Carbon Monoxide...........4-39, 4-56, 2-12, 2-13, 2-39
Care of
Safety Belts................................................5-87
Your Cassette Tape Player..........................3-119
Your CD and DVD Player...........................3-121
Your CDs and DVDs..................................3-120
Cargo Area, All-Weather..................................2-52
Cargo Area Floor Drains..................................2-52
Cargo Tie Downs............................................2-53
Cassette Tape Messages.................................3-85
CD Adapter Kits.............................................3-85
CD Messages...............................3-73, 3-88, 3-103
Chains, Tires..................................................5-68
2

Sun Visors.....................................................2-21
Sunroof.........................................................2-54
T
Tachometer....................................................3-33
Tailgate.........................................................2-13
TAILGATE AJAR.............................................3-60
TAILGATE GLASS DOWN................................3-60
TAILGATE OPEN............................................3-60
Taillamps
Turn Signal Lamps......................................5-49
Testing the Alarm............................................2-23
Theft-Deterrent, Radio....................................3-117
Theft-Deterrent Systems...................................2-22
Content Theft-Deterrent................................2-22
Passlock
ž...................................................2-23
Throttle, Adjustable..........................................2-27
TIGHTEN FUEL CAP......................................3-60
Tilt Wheel........................................................ 3-6
Tire Sidewall Labeling......................................5-52
Tire Size.......................................................5-56
Tire Terminology and De®nitions........................5-57
Tires.............................................................5-52
Buying New Tires........................................5-64
Chains.......................................................5-68
Changing a Flat Tire....................................5-71
If a Tire Goes Flat.......................................5-70
In¯ation - Tire Pressure................................5-60Tires (cont.)
Inspection and Rotation................................5-61
Spare Tire..................................................5-83
Uniform Tire Quality Grading.........................5-65
Wheel Alignment and Tire Balance.................5-66
Wheel Replacement.....................................5-66
When It Is Time for New Tires......................5-63
To Use the Engine Coolant Heater....................2-28
Top Strap......................................................1-38
Top Strap Anchor Location...............................1-40
Torque Lock...................................................2-37
Total Weight on Your Vehicle's Tires..................4-60
Towing
Recreational Vehicle.....................................4-45
Towing a Trailer..........................................4-56
Your Vehicle...............................................4-45
Traction
Assist System (TAS)...................................... 4-8
Trailer Brakes.................................................4-61
Trailer Wiring Harness.....................................4-66
Transfer Case................................................5-46
Transmission
Fluid, Automatic...........................................5-21
Transmission Operation, Automatic....................2-29
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-11
Transportation Options...................................... 7-8
Traveling to Remote Areas...............................4-17
Trip Information..............................................3-47
Trip Odometer................................................3-32
14