2004 GMC ENVOY XUV service

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................. 1-8
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-50
Restraint System Check
............................1-60
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-19
Theft-Deterrent Systems
............................2-22
Starting and Operating Your Vehicle
...........2-24
Mirrors
....................................................2-41
OnStar
žSystem
......................................2-45
HomeLinkžTransmitter
.............................2-47
Storage Areas
.........................................2-51
Vehicle Personalization
.............................2-54
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages, and Indicators
........3-30
Driver Information Center (DIC)
..................3-46
Audio System(s)
.......................................3-61Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-45
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-46
Four-Wheel Drive
.....................................5-46
Front Axle
...............................................5-47
Bulb Replacement
....................................5-48
Windshield Wiper Blade Replacement
.........5-50
Tires
......................................................5-52
Appearance Care
.....................................5-83
Vehicle Identi®cation
.................................5-91
Electrical System
......................................5-92
Capacities and Speci®cations
...................5-101
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2004 GMC Envoy XUV Owner ManualM

In many crashes severe enough to in¯ate an air bag,
windshields are broken by vehicle deformation.
Additional windshield breakage may also occur from the
right front passenger air bag.
·Air bags are designed to in¯ate only once. After an
air bag in¯ates, you'll need some new parts for
your air bag system. If you don't get them, the air
bag system won't be there to help protect you
in another crash. A new system will include air bag
modules and possibly other parts. The service
manual for your vehicle covers the need to replace
other parts.
·Your vehicle is equipped with electronic frontal
sensors, which help the sensing system distinguish
between a moderate frontal impact and a more
severe frontal impact. Your vehicle is also equipped
with a crash sensing and diagnostic module,
which records information about the frontal air bag
system. The module records information about
the readiness of the system, when the system
commands air bag in¯ation and driver's safety belt
usage at deployment. The module also records
speed, engine rpm, brake and throttle data.
·Let only quali®ed technicians work on your air bag
systems. Improper service can mean that an air
bag system won't work properly. See your dealer for
service.
Notice:If you damage the covering for the driver's
or the right front passenger's air bag, or the air
bag covering on the driver's and right front
passenger's seatback, the air bag may not work
properly. You may have to replace the air bag
module in the steering wheel, both the air bag
module and the instrument panel for the right front
passenger's air bag, or both the air bag module
and seatback for the driver's and right front
passenger's side impact air bag. Do not open or
break the air bag coverings.
1-58

Servicing Your Air Bag-Equipped
Vehicle
Air bags affect how your vehicle should be serviced.
There are parts of the air bag systems in several places
around your vehicle. Your dealer and the service
manual have information about servicing your vehicle
and the air bag systems. To purchase a service manual,
see
Service Publications Ordering Information on
page 7-11.
{CAUTION:
For up to 10 minutes after the ignition key is
turned off and the battery is disconnected, an
air bag can still in¯ate during improper
service. You can be injured if you are close to
an air bag when it in¯ates. Avoid yellow
connectors. They are probably part of the air
bag system. Be sure to follow proper service
procedures, and make sure the person
performing work for you is quali®ed to do so.
The air bag systems do not need regular maintenance.
1-59

Remote Keyless Entry System
If equipped, the keyless entry system operates on a
radio frequency subject to Federal Communications
Commission (FCC) Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference, and
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modi®cations to this system by other than
an authorized service facility could void authorization to
use this equipment.At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:
·Check the distance. You may be too far from your
vehicle. You may need to stand closer during
rainy or snowy weather.
·Check the location. Other vehicles or objects may
be blocking the signal. Take a few steps to the
left or right, hold the transmitter higher, and
try again.
·Check to determine if battery replacement is
necessary. See ªBattery Replacementº under
Remote Keyless Entry System Operation on
page 2-5.
·If you are still having trouble, see your dealer or a
quali®ed technician for service.
2-4

4. Press the midgate release button located on the
driver's side of the midgate while pulling the
release handle.
5. Lower the midgate and secure it in the down
position by engaging the midgate to the ¯oor
support. The latch for the ¯oor support is found on
the driver's side of the vehicle.
Raising the Midgate
To return the midgate to its normal position, release the
midgate by pulling up on the lever found on the
driver's side midgate support. Reverse the steps for
lowering the midgate listed previously. The midgate must
be fully latched on both sides before the midgate
glass can be raised.
Tailgate
Your vehicle is equipped with a tailgate which can be
swung out or opened ¯at. It can be locked and unlocked
with the driver or passenger door power lock button
or the remote keyless entry transmitter. The tailgate has
power rear glass. The glass must be fully lowered to
open the tailgate to its ¯at position.
The power roof and tailgate must both be fully closed to
raise the rear glass. If the roof or tailgate are not fully
closed, the words CLOSE THE ROOF or CLOSE
THE TAILGATE will appear on the DIC when you try to
raise the rear glass.
If the tailgate drop/swing, power roof, rear wiper and
rear window defogger functions are inoperative, or SEE
MANUAL± TAILGATE is displayed on the Driver
Information Center, the tailgate window position needs
to be reset. To reset the window position, activate
the tailgate window up switch and continue to hold it for
two seconds after the window is fully closed. Then
activate the tailgate window down switch and continue
to hold it for two seconds after the window is fully open.
If this process does not restore function, see your
dealer for service.
2-13

Using the Tailgate Key Cylinder
To operate the power roof using the tailgate key
cylinder, the rear glass must be fully lowered. Turn and
hold the key clockwise to lower the rear glass. Once
the glass is completely lowered, the roof may be opened
by returning the key to the neutral (vertical) position
and then turning and holding the key clockwise again.
The roof may be closed by turning and holding the
key counterclockwise. Maintain the key in the
counterclockwise position until the roof is fully closed.
Resetting the Roof Position
The words OPEN THE ROOF may appear on the DIC.
This indicates a need to reset the roof position.
When this message appears, place the vehicle in
PARK (P) and the ignition in RUN or ACCESSORY.
Open the power roof using the power roof switch in the
overhead console. When the roof has fully opened,
the words CLOSE THE ROOF will appear and a chime
will sound. This completes the ®rst step of the roof
reset process.With the vehicle still in PARK (P) and the ignition in
RUN or ACCESSORY, close the power roof using the
power roof switch in the overhead console until the
words ROOF IS CLOSED appear and a chime sounds.
If the words ROOF IS CLOSED do not appear within
one minute or the roof does not operate after this reset
process, see your dealer for service.
Resetting the Rear Glass Position
The words TAILGATE ÐSEE MANUAL may appear on
the DIC after the rear glass has been fully lowered
and the roof has not moved. Although this message may
appear when you attempt to operate the roof, it
indicates a need to reset the rear glass position.
2-18

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, see
Fuses and Circuit Breakers on page 5-93.
If the alarm does not sound or the headlamps do not
¯ash, the vehicle should be serviced by your dealer.
Passlockž
Your vehicle is equipped with the
Passlockžtheft-deterrent system.
Passlock
žis a passive theft-deterrent system.
Passlockženables 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
žsystem is
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock
žat this
time. You may also want to check the fuse. See your
dealer for service.
2-23

Notice:If your key seems stuck in LOCK and you
can not turn it, be sure you are using the correct
key; if so, is it all the way in? Turn the key only with
your hand. Using a tool to force it could break the
key or the ignition switch. If none of these works,
then your vehicle needs service.
B (ACCESSORY):This position lets you use things like
the radio and the windshield wipers when the engine
is off.
Notice:Lengthy operation of features such as the
radio in the accessory ignition position may
drain the battery and prevent your vehicle from
starting. Do not operate your vehicle in the
accessory ignition position for a long period
of time.
C (RUN):This is the position for driving.
D (START):This position starts the engine.
Retained Accessory Power (RAP)
Your vehicle is equipped with a Retained Accessory
Power (RAP) feature which will allow certain features of
your vehicle to continue to work up to 20 minutes
after the ignition key is turned to LOCK.
Your radio, power windows, sunroof (option) and
overhead console (including tailgate glass and power
roof) will work when the ignition key is in RUN or
ACCESSORY. Once the key is turned from RUN to
LOCK, these features will continue to work for up
to 20 minutes or until a door is opened.
2-25