2004 GMC ENVOY warning

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-5
Safety Belts
.............................................. 1-8
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-51
Restraint System Check
............................1-61
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-19
Mirrors
....................................................2-36
OnStar
®System
......................................2-40
HomeLink®Transmitter
.............................2-41
Storage Areas
.........................................2-45
Sunroof
..................................................2-52
Vehicle Personalization
.............................2-52
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages and Indicators
.........3-32
Driver Information Center (DIC)
..................3-50
Audio System(s)
.......................................3-63Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-43
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-49
Four-Wheel Drive
.....................................5-50
Front Axle
...............................................5-51
Bulb Replacement
....................................5-52
Windshield Wiper Blade Replacement
.........5-54
Tires
......................................................5-57
Appearance Care
.....................................5-91
Vehicle Identication
.................................5-99
Electrical System
....................................5-100
Capacities and Specications
...................5-115
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index.................................................................1
2004 GMC Envoy/Envoy XL Owner ManualM

Safety Warnings and Symbols
You will nd a number of safety cautions in this book.
We use a box and the word CAUTION to tell you about
things that could hurt you if you were to ignore the
warning.
{CAUTION:
These mean there is something that could hurt
you or other people.
In the caution area, we tell you what the hazard is.
Then we tell you what to do to help avoid or reduce the
hazard. Please read these cautions. If you don’t, you
or others could be hurt.You will also nd a circle
with a slash through it in
this book. This safety
symbol means “Don’t,”
“Don’t do this” or “Don’t let
this happen.”
iii

Vehicle Damage Warnings
Also, in this book you will nd these notices:
Notice:These mean there is something that could
damage your vehicle.
A notice will tell you about something that can damage
your vehicle. Many times, this damage would not be
covered by your warranty, and it could be costly.
But the notice will tell you what to do to help avoid the
damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different
colors or in different words.
You’ll also see warning labels on your vehicle. They use
the same words, CAUTION or NOTICE.
Vehicle Symbols
Your vehicle has components and labels that use
symbols instead of text. Symbols, used on your vehicle,
are shown along with the text describing the operation
or information relating to a specic component, control,
message, gage or indicator.
If you need help guring out a specic name of a
component, gage or indicator, reference the following
topics:
Seats and Restraint Systems in Section 1
Features and Controls in Section 2
Instrument Panel Overview in Section 3
Climate Controls in Section 3
Warning Lights, Gages and Indicators in Section 3
Audio System(s) in Section 3
Engine Compartment Overview in Section 5
iv

An indicator light in the knob will show you which
position the transfer case is in. The indicator lights will
come on briey when you turn on the ignition and
one will stay on. If the lights do not come on, you should
take your vehicle to your dealer for service. An
indicator light will ash while shifting the transfer case. It
will remain illuminated when the shift is complete. If
for some reason the transfer case cannot make a
requested shift, it will return to the last chosen setting.
If the service four-wheel drive light on the instrument
panel cluster stays on, you should take your vehicle to
your dealer for service. SeeService Four-Wheel
Drive Warning Light on page 3-47for further information.
Shifting into 4HI or A4WD
Turn the knob to 4HI or A4WD. This can be done at any
speed unless you are shifting out of 4LO. The indicator
light will ash while shifting. It will remain illuminated
when the shift is complete.
Shifting into 2HI
Turn the knob to 2HI. This can be done at any speed
unless you are shifting out of 4LO.
Shifting into 4LO
To shift to 4LO, the vehicle’s engine must be running
and the vehicle must be stopped or moving less
than 2 mph (3.2 km/h) with the transmission in
NEUTRAL (N). The preferred method for shifting into4LO is to have your vehicle moving 1 or 2 mph (1.6 to
3.2 km/h). Turn the knob to 4LO. You must wait for
the 4LO indicator light to stop ashing and remain
illuminated before shifting your transmission into gear.
If you turn the knob to 4LO when your vehicle is in gear
and/or moving, the 4LO indicator light will ash for
30 seconds and not complete the shift unless your
vehicle is moving less than 2 mph (3.2 km/h) and the
transmission is in NEUTRAL (N). After 30 seconds, the
transfer case will return to the setting last chosen.
Shifting Out of 4LO
To shift from 4LO to 4HI, A4WD or 2HI your vehicle must
be stopped or moving less than 2 mph (3.2 km/h) with the
transmission in NEUTRAL (N) and the engine running.
The preferred method for shifting out of 4LO is to have
your vehicle moving 1 or 2 mph (1.6 to 3.2 km/h). Turn
the knob to 4HI, A4WD or 2HI. You must wait for the 4HI,
A4WD or 2HI indicator light to stop ashing and remain
illuminated before shifting your transmission into gear.
If the knob is turned to 4HI, A4WD or 2HI when your
vehicle is in gear and/or moving, the 4HI, A4WD or 2HI
indicator light will ash for 30 seconds. It will not
complete the shift unless your vehicle is moving less
than 2 mph (3.2 km/h) with the transmission in
NEUTRAL (N).
2-28

Parking Brake
To set the parking brake, hold the regular brake pedal
down with your foot and pull up on the parking brake
lever. If the ignition is on, the brake system warning light
will come on.
To release the parking brake, hold the regular brake
pedal down. Pull the parking brake lever up until you can
press in the button at the end of the lever. Hold the
button in as you move the parking brake lever all the
way down.Notice:Driving with the parking brake on can
overheat the brake system and cause premature
wear or damage to brake system parts. Verify that
the parking brake is fully released and the brake
warning light is off before driving.
If you are towing a trailer and you must park on a hill,
seeTowing a Trailer on page 4-55. That section
shows what to do rst to keep the trailer from moving.
2-30

Outside Manual Mirrors
Adjust your outside mirrors so you can see a little of the
side of your vehicle.
Fold the mirrors in before entering a car wash. To do
this, pull the mirrors in toward the vehicle. Push the
mirrors back out when nished.
Outside Power Mirrors
Your vehicle may have this feature.
The control is located
on the driver’s door.1. Turn the knob toward the mirror you desire to
adjust.
2. Move the knob in the direction you want the
mirror to go.
3. Adjust the mirror in all four directions.
4. After you are satised with the position of the
mirror, turn the knob to the center position or turn it
to the other mirror to adjust that mirror.
If you reach the mirror’s end of the travel position in any
direction, the mirror will enter a ratcheting mode. This
action is harmless. It is a warning that the mirror can go
no further. To stop this action, back the mirror up by
moving the knob in the opposite direction.
When the knob is turned to the center position, the
mirrors can not be moved with the control knob.
2-38

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-7
Tilt Wheel.....................................................3-7
Turn Signal/Multifunction Lever.........................3-7
Exterior Lamps.............................................3-15
Interior Lamps..............................................3-17
Accessory Power Outlets...............................3-19
Ashtrays and Cigarette Lighter........................3-20
Climate Controls............................................3-20
Dual Climate Control System..........................3-20
Dual Automatic Climate Control System...........3-24
Rear Climate Control System.........................3-28
Climate Controls Personalization.....................3-31
Warning Lights, Gages and Indicators.............3-32
Instrument Panel Cluster................................3-33
Speedometer and Odometer...........................3-34
Tachometer.................................................3-35
Safety Belt Reminder Light.............................3-35Air Bag Readiness Light................................3-35
Charging System Light..................................3-36
Voltmeter Gage............................................3-37
Brake System Warning Light..........................3-38
Anti-Lock Brake System Warning Light.............3-39
Engine Coolant Temperature Gage..................3-39
Malfunction Indicator Lamp.............................3-40
Oil Pressure Gage........................................3-44
Change Engine Oil Light................................3-45
Security Light...............................................3-45
Cruise Control Light......................................3-46
Reduced Engine Power Light.........................3-46
Service Four-Wheel Drive Warning Light..........3-47
Check Gages Warning Light...........................3-47
Gate Ajar Light.............................................3-48
Fuel Gage...................................................3-48
Low Fuel Warning Light.................................3-49
Driver Information Center (DIC).......................3-50
DIC Operation and Displays...........................3-50
DIC Warnings and Messages.........................3-59
Section 3 Instrument Panel
3-1

Hazard Warning Flashers
Your hazard warning ashers let you warn others. They
also let police know you have a problem. Your front
and rear turn signal lamps will ash on and off.The button for the hazard
warning ashers is located
on top of the steering
column.
The hazard warning ashers work no matter what
position your key is in, and even if the key isn’t in.
Press the button all the way down to make your front
and rear turn signal lamps ash on and off. To turn
off the ashers, press the button again until it clicks and
then release it.
When the hazard warning ashers are on, the turn
signals won’t work.
Other Warning Devices
If you carry reective triangles, you can set one up at
the side of the road about 300 feet (100 m) behind your
vehicle.
3-6