headlamp GMC ENVOY XL 2005 Owner's Guide

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 5-66for more
information.
5-62

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 airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-66.
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.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow or ice, the wiper will stop until the motor cools.
If the overload is caused by some electrical problem, be
sure to get it xed.
Power Windows and Other Power
Options
Circuit breakers protect the power windows and other
power accessories. When the current load is too heavy,
the circuit breaker opens and closes, protecting the
circuit until the problem is xed or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of your vehicle
that you can get along without — like the radio or
cigarette lighter — and use its fuse, if it is the correct
amperage. Replace it as soon as you can.
5-91

Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger’s Side High-Beam
HeadlampFuses Usage
3Passenger’s Side Low-Beam
Headlamp
4 Back-Up Trailer Lamps L6 Engine
5-93

Fuses Usage
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 Lamps
12 Stoplamp
13 Cigarette Lighter
14 Ignition Coils
15 Electric Adjustable Pedals
16 Truck Body Controller, Ignition 1
17 Crank
18 Airbag
19 Trailer Electric Brake
20 Cooling Fan
21 HornFuses Usage
22 Ignition E
23 Electronic Throttle Control
24Instrument Panel Cluster, Driver
Information Center
25Automatic Shift Lock Control
System
26 Engine 1
27 Backup
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
5-94

Fuses Usage
53 Headlamp Driver Module
54Air Injection Reactor (AIR)
Solenoid
56 Air Injection Reactor (AIR) Pump
Relay Usage
37 Headlamp Washer
38 Rear Window Washer
39 Fog Lamps
40 Horn
41 Fuel Pump
42 Windshield Washer
Relay Usage
43 High-Beam Headlamp
44 Air Conditioning
45 Cooling Fan
46 Headlamp Driver Module
47 Starter
49 Electric Adjustable Pedal
55Air Injection Reactor (AIR)
Solenoid
Miscellaneous Usage
48 Instrument Panel Battery
5-95

Fuses Usage
1Electrically-Controlled Air
Suspension
2Passenger’s Side High-Beam
HeadlampFuses Usage
3Passenger’s Side Low-Beam
Headlamp
4 Back-Up Trailer Lamps V8 Engine
5-96

Fuses Usage
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 Lamps
12 Stoplamp
13 Cigarette Lighter
14 Ignition Coils
15 Canister Vent
16 Truck Body Controller, Ignition 1
17 Crank
18 Airbag
19 Trailer Electric Brake
20 Cooling Fan
21 Horn
22 Ignition E
23 Electronic Throttle ControlFuses Usage
24Instrument Panel Cluster, Driver
Information Center
25Automatic Shift Lock Control
System
26 Engine 1
27 Backup
28 Powertrain Control Module 1
29 Powertrain Control Module
30 Air Conditioning
31 Injector Bank A
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 Transmission
54 Oxygen Sensor Bank B
55 Oxygen Sensor Bank A
56 Injector Bank B
5-97

Fuses Usage
57 Headlamp Driver Module
58 Truck Body Controller 1
59 Electric Adjustable Pedal
Relay 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
60 Powertrain
Miscellaneous Usage
48 Instrument Panel Battery
Rear Underseat Fuse Block
Envoy
5-98

Audio System(s) (cont.)
Fixed Mast Antenna...................................3-129
Navigation/Radio System, see
Navigation Manual..................................3-113
Radio with Cassette and CD.........................3-87
Radio with CD....................................3-63, 3-73
Radio with Six-Disc CD..............................3-100
Rear Seat Audio (RSA)...............................3-124
Setting the Time..........................................3-62
Theft-Deterrent Feature...............................3-125
Understanding Radio Reception...................3-127
XM™ Satellite Radio Antenna System...........3-129
Automatic Headlamp System............................3-16
Automatic Transmission
Fluid..........................................................5-21
Operation...................................................2-24
B
Battery..........................................................5-38
Run-Down Protection...................................3-19
Before Leaving on a Long Trip.........................4-34
Brake
Anti-Lock Brake System (ABS)........................ 4-6
Emergencies................................................ 4-8
Parking......................................................2-31
System Warning Light..................................3-38
Brake Pedal, Throttle.......................................2-22Brakes..........................................................5-35
Braking........................................................... 4-5
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-45
Back-Up Lamps...........................................5-47
Halogen Bulbs............................................5-45
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-46
Replacement Bulbs......................................5-47
Taillamps, Turn Signal, and Stoplamps............5-46
Buying New Tires...........................................5-59
C
California Fuel.................................................. 5-6
Canadian Owners................................................ ii
Capacities and Specications..........................5-103
Carbon Monoxide...................2-13, 2-35, 4-38, 4-55
Care of
Safety Belts................................................5-85
Your Cassette Tape Player..........................3-127
Your CD and DVD Player...........................3-128
Your CDs and DVDs..................................3-128
Cargo Cover..................................................2-58
Center Console Storage Area...........................2-54
Chains, Tire...................................................5-63
Charging System Light....................................3-37
2

Customer Assistance Information (cont.)
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Assistance Program......................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Delayed Locking............................................... 2-9
Displacement on Demand (DoD).......................2-24
Doing Your Own Service Work........................... 5-4
Dome Lamp Override......................................3-18
Dome Lamps.................................................3-17
Door
Delayed Locking........................................... 2-9
Locks.......................................................... 2-8
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-12
Driver
Position, Safety Belt.....................................1-18Driver Information Center (DIC).........................3-49
DIC Operation and Displays..........................3-50
DIC Vehicle Customization............................3-56
DIC Warnings and Messages........................3-53
Driving
At Night.....................................................4-28
City...........................................................4-32
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-33
Hill and Mountain Roads..............................4-36
In Rain and on Wet Roads...........................4-29
Rocking Your Vehicle to Get it Out.................4-43
Winter........................................................4-38
Dual Automatic Climate Control System.............3-23
Dual Climate Control System............................3-20
DVD
Rear Seat Entertainment System..................3-113
E
Electrical System
Add-On Equipment......................................5-91
Engine Compartment Fuse Block...................5-92
Fuses and Circuit Breakers...........................5-91
Headlamps.................................................5-91
Power Windows and Other Power Options......5-91
4