fuses GMC ENVOY 2004 Owner's Manual

Remember, the theft-deterrent system won’t activate if
you lock the doors with a key or use the manual
door lock. It activates only if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that
you can start your vehicle with the correct ignition key if
the alarm has been set off.
Here’s how to avoid setting off the alarm by accident:
If you don’t want to activate the theft-deterrent
system, the vehicle should be locked with the door
keyafterthe doors are closed.
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set off the alarm.
If you set off the alarm by accident, unlock any door with
the key. You can also turn off the alarm by pressing
unlock on the remote keyless entry transmitter. The alarm
won’t stop if you try to unlock a door any other way.
Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the security light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set off the alarm.
When the alarm is set the power door unlock switch is
not operational.
If the alarm does not sound when it should but the
headlamps ash, check to see if the horn works. The
horn fuse may be blown. To replace the fuse, seeFuses
and Circuit Breakers on page 5-101.
If the alarm does not sound or the headlamps do not
ash, the vehicle should be serviced by your dealer.
2-18

Passlock®
Your vehicle is equipped with the
Passlock®theft-deterrent system.
Passlock
®is a passive theft-deterrent system that
enables fuel if the ignition lock cylinder is turned with a
valid key. If a correct key is not used or the ignition
lock cylinder is tampered with, the fuel system is
disabled and the vehicle will not start.
During normal operation, the security light will turn off
approximately ve seconds after the key is turned
to RUN.
If the engine stalls and the security light ashes, wait
about 10 minutes until the light stops ashing before
trying to restart the engine. Remember to release
the key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the engine
off. However, your Passlock
®system is not working
properly and must be serviced by your dealer. Your
vehicle is not protected by Passlock
®at this time. You
may also want to check the fuse. SeeFuses and Circuit
Breakers on page 5-101. See your dealer for service.
In an emergency, call the GM Roadside Assistance
Center. SeeRoadside Assistance Program on page 7-6.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
“break-in.” But it will perform better in the long run
if you follow these guidelines:
Keep your speed at 55 mph (88 km/h) or less for
the rst 500 miles (805 km).
Do not drive at any one speed — fast or
slow — for the rst 500 miles (805 km). Do not
make full-throttle starts.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new
brake linings are not yet broken in. Hard stops
with new linings can mean premature wear
and earlier replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. SeeTowing
a Trailer on page 4-55for more information.
2-19

Turn and Lane Change Signals
The turn signal has two upward (for right) and two
downward (for left) positions. These positions allow you
to signal a turn or a lane change.
To signal a turn, move the lever all the way up or down.
When the turn is nished, the lever will return
automatically.
An arrow on the instrument
panel cluster will ash in
the direction of the
turn or lane change.
To signal a lane change, just raise or lower the lever
until the arrow starts to ash. Hold it there until you
complete your lane change. The lever will return by itself
when you release it. The bottom of the outside
rearview mirrors may also be equipped with lane change
indicators.As you signal a turn or a lane change, if the arrows
ash more quickly than normal, a signal bulb may
be burned out and other drivers won’t see your turn
signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows don’t go on at all when you signal
a turn, check the fuse. SeeFuses and Circuit Breakers
on page 5-101and check for burned-out bulbs.
If you have a trailer towing option with added wiring for
the trailer lamps, a different turn signal asher is
used. With this asher installed, the signal indicator will
ash even if a turn signal bulb is burned out. Check
the front and rear turn signal lamps regularly to make
sure they are working.
Turn Signal On Chime
If your turn signal is left on for more than 3/4 of a mile
(1.2 km), a chime will sound at each ash of the
turn signal. To turn off the chime, move the turn signal
lever to the off position.
3-8

You can also turn the dome lamps on by turning the
thumbwheel, located next to the exterior lamps knob, all
the way up to the top detent position. In this position,
the dome lamps will remain on until they are turned off.
Battery Run-Down Protection
This feature shuts off the dome, courtesy, vanity, and
reading lamps if they are left on for more than
20 minutes when the ignition is off. This will keep your
battery from running down.
If the battery run-down protection shuts off the interior
lamps, it may be necessary to do one of the following to
return to normal operation:
Shut off all lamps and close all doors, or
turn the ignition key to RUN.
This feature will also turn off the parking lamps and
headlamps under most circumstances, if they are left on.
If you would like to turn them back on, turn the exterior
lamps knob.
Accessory Power Outlets
Your vehicle may have accessory power outlets. With
the accessory power outlets, you can plug in auxiliary
electrical equipment such as a cellular telephone or
CB radio.The rst two outlets are located below the cigarette
lighter and the rear wiper switch on the instrument panel.
The third outlet is located on the rear of the center
console.
Remove the cover from the outlet to use the outlet.
Be sure to put the cover back on when not using the
accessory power outlet.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adaptor fuses. If you experience a
problem, see your dealer for additional information
on the accessory power outlets.
Notice:Adding any electrical equipment to your
vehicle may damage it or keep other components
from working as they should. The repairs would not
be covered by your warranty. Check with your
dealer before adding electrical equipment.
When adding electrical equipment, be sure to follow the
proper installation instructions included with the
equipment.
Notice:Improper use of the power outlet can cause
damage not covered by your warranty. Do not
hang any type of accessory or accessory bracket
from the plug because the power outlets are
designed for accessory power plugs only.
3-19

Dinghy Towing
When towing your vehicle, turn the ignition to LOCK.
To prevent your battery from draining while towing,
remove the Ignition A and the Ignition B fuses from the
engine compartment fuse block. Be sure to reinstall
the fuse when you reach your destination.
Two-Wheel-Drive Vehicles
Notice:If you tow your vehicle with all four wheels
on the ground, the drivetrain components could
be damaged. The repairs would not be covered by
your warranty. Do not tow your vehicle with all
four wheels on the ground.
Two-wheel-drive vehicles should not be towed with all
four wheels on the ground. Two-wheel-drive
transmissions have no provisions for internal lubrication
while being towed. To properly tow these vehicles,
they should be placed on a platform trailer, or dolly
towed. See “Dolly Towing” following for more
information.
4-45

Wheel Alignment and Tire Balance..................5-71
Wheel Replacement......................................5-71
Tire Chains..................................................5-72
Accessory Inator.........................................5-73
If a Tire Goes Flat........................................5-75
Changing a Flat Tire.....................................5-76
Spare Tire...................................................5-91
Appearance Care............................................5-91
Cleaning the Inside of Your Vehicle.................5-92
Care of Safety Belts......................................5-94
Weatherstrips...............................................5-94
Cleaning the Outside of Your Vehicle..............5-95
Sheet Metal Damage.....................................5-97
Finish Damage.............................................5-97Underbody Maintenance................................5-98
Chemical Paint Spotting.................................5-98
Vehicle Care/Appearance Materials..................5-98
Vehicle Identication......................................5-99
Vehicle Identication Number (VIN).................5-99
Service Parts Identication Label...................5-100
Electrical System..........................................5-100
Add-On Electrical Equipment.........................5-100
Headlamps.................................................5-100
Windshield Wiper Fuses...............................5-101
Power Windows and Other Power Options......5-101
Fuses and Circuit Breakers..........................5-101
Capacities and Specications........................5-115
Section 5 Service and Appearance Care
5-2

A. Coolant Recovery Tank. SeeEngine Coolant on
page 5-25.
B. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-21.
C. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-38.
D. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
E. Automatic Transmission Dipstick. SeeAutomatic
Transmission Fluid on page 5-22.
F. Engine Oil Dipstick. SeeEngine Oil on page 5-16.G. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-27.
H. Engine Oil Fill Cap. SeeEngine Oil on page 5-16.
I. Remote Negative (-) Terminal Marked GND.
SeeJump Starting on page 5-43.
J. Brake Master Cylinder. SeeBrakes on page 5-39.
K. Battery. SeeBattery on page 5-42.
L. Engine Compartment Fuse Block. See “Engine
Compartment Fuse Block” underFuses and Circuit
Breakers on page 5-101.
5-13

A. Coolant Recovery Tank. SeeEngine Coolant on
page 5-25.
B. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-21.
C. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-38.
D. Engine Oil Dipstick. SeeEngine Oil on page 5-16.
E. Automatic Transmission Dipstick. SeeAutomatic
Transmission Fluid on page 5-22.
F. Engine Oil Fill Cap. SeeEngine Oil on page 5-16.
G. Radiator Pressure Cap. SeeRadiator Pressure Cap
on page 5-27.H. Remote Negative (-) Terminal Marked GND. See
Jump Starting on page 5-43.
I. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
J. Brake Master Cylinder. SeeBrakes on page 5-39.
K. Engine Compartment Fuse Block. See “Engine
Compartment Fuse block” underFuses and Circuit
Breakers on page 5-101.
L. Battery. SeeBattery on page 5-42.
5-15

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

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.
5-101