2005 GMC ENVOY XL wheel

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-9
Safety Belts
.............................................1-12
Child Restraints
.......................................1-31
Airbag System
.........................................1-52
Restraint System Check
............................1-67
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-14
Theft-Deterrent Systems
............................2-17
Starting and Operating Your Vehicle
...........2-19
Mirrors
....................................................2-37
OnStar
®System
......................................2-47
HomeLink®Wireless Control System
...........2-49
Storage Areas
.........................................2-53
Sunroof
..................................................2-60
Vehicle Personalization
.............................2-60
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-20
Warning Lights, Gages, and Indicators
........3-31
Driver Information Center (DIC)
..................3-49Audio System(s)
.......................................3-62
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-50
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-43
Four-Wheel Drive
.....................................5-44
Front Axle
...............................................5-44
Bulb Replacement
....................................5-45
Windshield Wiper Blade Replacement
.........5-48
Tires
......................................................5-50
Appearance Care
.....................................5-81
Vehicle Identication
.................................5-90
Electrical System
......................................5-91
Capacities and Specications
...................5-103
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
2005 GMC Envoy, Envoy XL, Envoy Denali,
and Envoy XL Denali Owner Manual
M

Why Safety Belts Work
When you ride in or on anything, you go as fast as
it goes.
Take the simplest vehicle. Suppose it is just a seat on
wheels.Put someone on it.
1-14

Where Are the Airbags?
The driver’s airbag is in the middle of the steering
wheel.The right front passenger’s airbag is in the instrument
panel on the passenger’s side.
1-55

{CAUTION:
If something is between an occupant and an
airbag, the bag might not inate properly or it
might force the object into that person causing
severe injury or even death. The path of an
inating airbag must be kept clear. Do not put
anything between an occupant and an airbag,
and do not attach or put anything on the
steering wheel hub or on or near any other
airbag covering. And, if your vehicle has
roof-mounted airbags, never secure anything
to the roof of your vehicle by routing the rope
or tiedown through any door or window
opening. If you do, the path of an inating
side impact airbag will be blocked. The path
of an inating airbag must be kept clear.
When Should an Airbag Inate?
The driver’s and right front passenger’s frontal airbags
are designed to inate in moderate to severe frontal
or near-frontal crashes. But they are designed to inate
only if the impact exceeds a predetermined deployment
threshold. Deployment thresholds take into account
a variety of desired deployment and non-deployment
events and are used to predict how severe a crash
is likely to be in time for the airbags to inate and help
restrain the occupants. Whether your frontal airbags
will or should deploy is not based on how fast your
vehicle is traveling. It depends largely on what you hit,
the direction of the impact and how quickly your
vehicle slows down.
In addition, your vehicle has “dual stage” frontal
airbags, which adjust the restraint according to crash
severity. 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. For moderate frontal impacts, these
airbags inate at a level less than full deployment.
1-57

The airbag system is designed to work properly under
a wide range of conditions, including off-road usage.
Observe safe driving speeds, especially on rough
terrain. As always, wear your safety belt. SeeOff-Road
Driving with Your Four-Wheel-Drive Vehicle on
page 4-15for tips on off-road driving.
What Makes an Airbag Inate?
In an impact of sufficient severity, the airbag sensing
system detects that the vehicle is in a crash. In the
case of a “rollover capable” roof-mounted airbag, the
sensing system detects that the vehicle is about to
roll over. For both frontal and roof-mounted airbags,
the sensing system triggers a release of gas from the
inator, which inates the airbag. The inator, airbag,
and related hardware are all part of the airbag modules
inside the steering wheel and in the instrument panel
in front of the right front passenger. For vehicles
with roof-mounted airbags, the airbag modules are
located in the ceiling of the vehicle, near the side
windows.
How Does an Airbag Restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle. The airbag supplements the protection
provided by safety belts. Airbags distribute the force of
the impact more evenly over the occupant’s upper
body, stopping the occupant more gradually. But the
frontal airbags would not help you in many types
of collisions, including rollovers, rear impacts, and
many side impacts, primarily because an occupant’s
motion is not toward the airbag. Roof-mounted airbags
would not help you in many types of collisions,
including frontal or near frontal collisions, and rear
impacts, primarily because an occupant’s motion is
not toward those airbags. Airbags should never
be regarded as anything more than a supplement to
safety belts, and then only in moderate to severe frontal
or near-frontal collisions for the driver’s and right front
passenger’s frontal airbags, and only in moderate
to severe side collisions or rollovers for the roof-mounted
airbags.
1-59

What Will You See After an
Airbag Inates?
After an airbag inates, it quickly deates, so
quickly that some people may not even realize the
airbag inated. Some components of the airbag
module — the steering wheel hub for the driver’s
airbag, the instrument panel for the right front
passenger’s bag or the ceiling of your vehicle near
the side windows — will be hot for a short time. The
parts of the bag that come into contact with you may
be warm, but not too hot to touch. There will be
some smoke and dust coming from the vents in the
deated airbags. Airbag ination does not prevent the
driver from seeing or being able to steer the vehicle,
nor does it stop people from leaving the vehicle.
{CAUTION:
When an airbag inates, there is dust in the
air. This dust could cause breathing problems
for people with a history of asthma or other
breathing trouble. To avoid this, everyone in
the vehicle should get out as soon as it is safe
to do so. If you have breathing problems but
cannot get out of the vehicle after an airbag
inates, then get fresh air by opening a
window or a door. If you experience breathing
problems following an airbag deployment,
you should seek medical attention.
1-60

Your vehicle has a feature that will automatically unlock
the doors and turn the interior lamps on when the
airbags inate (if battery power is available). You can
lock the doors again and turn the interior lamps off
by using the door lock and interior lamp controls.
In many crashes severe enough to inate an airbag,
windshields are broken by vehicle deformation.
Additional windshield breakage may also occur from
the right front passenger airbag.
Airbags are designed to inate only once. After
an airbag inates, you will need some new parts
for your airbag system. If you do not get them, the
airbag system will not be there to help protect
you in another crash. A new system will include
airbag modules and possibly other parts. The
service manual for your vehicle covers the need
to replace other parts.
Your vehicle is equipped with a crash sensing and
diagnostic module which records information after
a crash. SeeVehicle Data Collection and Event
Data Recorders on page 7-9.
Let only qualied technicians work on your airbag
system. Improper service can mean that your
airbag system will not work properly. See your
dealer for service.
Notice:If you damage the covering for the driver’s
or the right front passenger’s airbag, or the side
impact airbag covering on the ceiling near the side
windows, the airbag may not work properly. You
may have to replace the airbag module in the
steering wheel, both the airbag module and the
instrument panel for the right front passenger’s
airbag, or side impact airbag module and ceiling
covering for roof-mounted side impact airbags.
Do not open or break the airbag coverings.
1-61

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks.............................................2-8
Door Locks....................................................2-8
Delayed Locking.............................................2-9
Programmable Automatic Door Locks..............2-10
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Liftgate/Liftglass............................................2-13
Windows........................................................2-14
Power Windows............................................2-14
Power Rear Quarter Windows........................2-16
Sun Visors...................................................2-16
Theft-Deterrent Systems..................................2-17
Content Theft-Deterrent.................................2-17
Passlock
®....................................................2-18
Starting and Operating Your Vehicle................2-19
New Vehicle Break-In....................................2-19
Ignition Positions..........................................2-20
Retained Accessory Power (RAP)...................2-21
Starting the Engine.......................................2-21
Adjustable Throttle and Brake Pedal................2-22
Engine Coolant Heater..................................2-23Displacement on Demand (DoD).....................2-24
Automatic Transmission Operation...................2-24
Four-Wheel Drive..........................................2-27
Parking Brake..............................................2-31
Shifting Into Park (P).....................................2-32
Shifting Out of Park (P).................................2-34
Parking Over Things That Burn.......................2-34
Engine Exhaust............................................2-35
Running the Engine While Parked...................2-36
Mirrors...........................................................2-37
Manual Rearview Mirror.................................2-37
Manual Rearview Mirror with OnStar
®..............2-37
Manual Rearview Mirror with Compass............2-38
Manual Rearview Mirror with OnStar
®
and Compass...........................................2-40
Manual Rearview Mirror with Compass
and Temperature.......................................2-42
Manual Rearview Mirror with OnStar
®,
Compass, and Temperature Display.............2-44
Outside Manual Mirrors..................................2-46
Outside Power Mirrors...................................2-46
Outside Curb View Assist Mirror.....................2-46
Outside Convex Mirror...................................2-47
Outside Heated Mirrors..................................2-47
Section 2 Features and Controls
2-1