headlamp GMC ENVOY 2004 Owner's Guide

Replacement Bulbs
Exterior Lamp Bulb Number
Halogen Headlamps
Low Beam 9006 HB4
High Beam 9005 HB3
Front Sidemarker Lamps 194
Front Turn Signal Lamps 3457
Tail and Stoplamps 3057
Rear Turn Signal Lamps 3057
Back Up Lamps 3157
For any bulb not listed here, contact your dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected at least
twice a year for wear or cracking.
Notice:Allowing the wiper blade arm to touch the
windshield when no wiper blade is installed
could damage the windshield. Any damage that
occurs would not be covered by your warranty. Do
not allow the wiper blade arm to touch the
windshield.
1. To remove the old wiper blades, lift the wiper arm
until it locks into a vertical position.
5-54

Wheel Alignment and Tire Balance
The wheels on your vehicle were aligned and balanced
carefully at the factory to give you the longest tire life
and best overall performance.
Scheduled wheel alignment and wheel balancing are
not needed. However, if you notice unusual tire wear or
your vehicle pulling one way or the other, the alignment
may need to be reset. If you notice your vehicle
vibrating when driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked or badly rusted
or corroded. If wheel nuts keep coming loose, the
wheel, wheel bolts and wheel nuts should be replaced.
If the wheel leaks air, replace it (except some
aluminum wheels, which can sometimes be repaired).
See your dealer if any of these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same load-carrying
capacity, diameter, width, offset and be mounted
the same way as the one it replaces.If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.
Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-76for more
information.
5-71

Engine Identication
The 8th character in your VIN is the engine code. This
code will help you identify your engine, specications
and replacement parts.
Service Parts Identication Label
You’ll nd this label on the inside of the glove box.
It’s very helpful if you ever need to order parts. On this
label is:
your VIN,
the model designation,
paint information and
a list of all production options and special
equipment.
Be sure that this label is not removed from the vehicle.
Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your
vehicle unless you check with your dealer rst.
Some electrical equipment can damage your vehicle
and the damage wouldn’t be covered by your
warranty. Some add-on electrical equipment can
keep other components from working as they
should.
Your vehicle has an air bag system. Before attempting
to add anything electrical to your vehicle, see
Servicing Your Air Bag-Equipped Vehicle on page 1-61.
Headlamps
The headlamp wiring is protected by four fuses.
An electrical overload will cause a lamp to go on and
off. If this happens, have your headlamp wiring checked
right away.
5-100

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
7Rear Window Washer, Headlamp
Washer
8 Active Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog LampsFuses Usage
12 Stop Lamp
13 Cigarette Lighter
14 Ignition Coils
15 Blank
16 TBC-Ignition 1
17 Crank
18 Air Bag
19 Trailer Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25Automatic Shift Lock Control
System
5-104

Fuses Usage
26 Backup
27 Engine 1
28 Powertrain Control Module 1
29 Oxygen Sensor
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 Electric Adjustable Pedal
54 A.I.R. Solenoid
56 A.I.R. PumpFuses Usage
Relays Usage
37 Headlamp Washer
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield 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
5-105

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
7Rear Window Washer, Headlamp
Washer
8 Active Transfer Case
9 Windshield Washer
10 Powertrain Control Module B
11 Fog LampsFuses Usage
12 Stop Lamp
13 Cigarette Lighter
14 Ignition Coils
15 Canister Vent
16 TBC-Ignition 1
17 Crank
18 Air Bag
19 Trailer Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25Automatic Shift Lock Control
System
5-107

Fuses Usage
26 Backup
27 Engine 1
28 Powertrain Control Module 1
30 Air Conditioning
31 Truck Body Controller 1
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 B
54 Oxygen Sensor Bank A
55 Injector Bank A
56 Injector Bank B
57 Electric Adjustable PedalFuses Usage
Relays Usage
37 Headlamp Washer
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
58 Ignition 1
Miscellaneous Usage
48 Instrument Panel Battery
5-108

Audio System(s) (cont.)
Rear Seat Audio (RSA)...............................3-114
Setting the Time..........................................3-63
Theft-Deterrent Feature...............................3-116
Understanding Radio Reception...................3-117
XM™ Satellite Radio Antenna System...........3-120
Automatic Headlamp System............................3-15
Automatic Transfer Case..................................2-27
Automatic Transmission
Fluid..........................................................5-22
Operation...................................................2-24
B
Backglass Wiper Blade Replacement.................5-56
Backing Up....................................................4-62
Battery..........................................................5-42
BATTERY NOT CHARGING.............................3-60
Battery Replacement......................................... 2-7
Battery Run-Down Protection............................3-19
Before Leaving on a Long Trip.........................4-35
Before You Drive...........................................3-104
Before You Go Off-Roading..............................4-15
Brake
Parking......................................................2-30
System Warning Light..................................3-38
Brake Adjustment............................................5-41
Brake Fluid....................................................5-39Brake Pedal, Throttle.......................................2-22
Brake Pedal Travel.........................................5-41
Brake Wear...................................................5-41
Brakes..........................................................5-39
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-52
Front Turn Signal and Sidemarker Lamps.......5-52
Halogen Bulbs............................................5-52
Headlamps.................................................5-52
Replacement Bulbs......................................5-54
Taillamps and Turn Signal Lamps..................5-52
Buying New Tires...........................................5-68
C
California Fuel.................................................. 5-5
Canada........................................................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-115
Carbon Monoxide...................4-38, 4-55, 2-14, 2-34
Care of
Safety Belts................................................5-94
Your Cassette Tape Player..........................3-118
Your CD and DVD Player...........................3-119
Your CDs and DVDs..................................3-119
2

Driver
Position, Safety Belt.....................................1-14
DRIVER DOOR AJAR.....................................3-61
Driver Information Center (DIC).........................3-50
DIC Operation and Displays..........................3-50
DIC Warnings and Messages........................3-59
Driving
At Night.....................................................4-28
City...........................................................4-33
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-34
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-30
Winter........................................................4-38
Driving Across an Incline..................................4-24
Driving Downhill..............................................4-23
Driving in Mud, Sand, Snow or Ice....................4-26
Driving in Water..............................................4-27
Driving On Grades..........................................4-63
Driving on Off-Road Hills.................................4-19
Driving on Snow or Ice....................................4-39
Driving Through Deep Standing Water...............4-32
Driving Through Flowing Water.........................4-32
Driving Uphill..................................................4-20
Driving with a Trailer.......................................4-61Dual Automatic Climate Control System.............3-24
Dual Climate Control System............................3-20
DVD
Cleaning the Video Screen..........................3-119
Distortion..................................................3-117
Rear Seat Entertainment System..................3-104
DVD Player..................................................3-104
E
Electrical System
Add-On Equipment.....................................5-100
Fuses and Circuit Breakers.........................5-101
Headlamps...............................................5-100
Power Windows and Other Power Options....5-101
Windshield Wiper Fuses.............................5-101
Electronically Controlled Air Suspension System....4-53
Emergency Release for Opening Liftgate............2-14
Emissions Inspection and
Maintenance Programs.................................3-43
Engine
Air Cleaner/Filter.........................................5-21
Battery.......................................................5-42
Change Engine Oil Light...............................3-45
Check and Service Engine Soon Light............3-40
Coolant......................................................5-25
5

Fuel (cont.)
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-48
Gasoline Octane........................................... 5-4
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-49
Fuel Information..............................................3-52
FUEL LEVEL LOW.........................................3-61
Fuses
Fuses and Circuit Breakers.........................5-101
Windshield Wiper.......................................5-101
G
Gage
Check Gages Warning Light..........................3-47
Engine Coolant Temperature.........................3-39
Fuel..........................................................3-48
Oil Pressure...............................................3-44
Speedometer..............................................3-34
Tachometer.................................................3-35
Voltmeter Gage...........................................3-37
Garage Door Opener.......................................2-41
Gasoline
Octane........................................................ 5-4
Specications............................................... 5-5Gate Ajar Light...............................................3-48
Gate Operator and Canadian Programming........2-44
Getting Familiar with Off-Road Driving................4-18
Glove Box.....................................................2-45
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-5
Headlamp High/Low-Beam Changer.................... 3-9
Headlamp Washer..........................................3-11
Headlamps....................................................5-52
Bulb Replacement.......................................5-52
Electrical System.......................................5-100
Front Turn Signal and Sidemarker Lamps.......5-52
Halogen Bulbs............................................5-52
Headphones.................................................3-110
Heated Seats................................................... 1-3
Highway Hypnosis...........................................4-36
Hill and Mountain Roads..................................4-36
Hitches..........................................................4-59
HomeLink
®Transmitter....................................2-41
HomeLink®Transmitter, Programming................2-42
Hood
Checking Things Under................................5-10
Release.....................................................5-10
7