GMC ENVOY DENALI 2008 Owners Manual

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
..............................................1-11
Safety Belts
.............................................1-13
Child Restraints
.......................................1-32
Airbag System
.........................................1-53
Restraint System Check
............................1-68
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-7
Windows
.................................................2-13
Theft-Deterrent Systems
............................2-16
Starting and Operating Your Vehicle
...........2-20
Mirrors
....................................................2-39
OnStar
®System
......................................2-48
Universal Home Remote System
................2-52
Storage Areas
.........................................2-57
Sunroof
..................................................2-60
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-21
Warning Lights, Gages, and Indicators
........3-30
Driver Information Center (DIC)
..................3-49
Audio System(s)
.......................................3-65Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-40
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-46
Four-Wheel Drive
.....................................5-47
Front Axle
...............................................5-48
Headlamp Aiming
.....................................5-49
Bulb Replacement
....................................5-49
Windshield Wiper Blade Replacement
.........5-54
Tires
......................................................5-57
Appearance Care
...................................5-100
Vehicle Identication
...............................5-108
Electrical System
....................................5-109
Capacities and Specications
...................5-120
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-15
Vehicle Data Recording and Privacy
...........7-18
Index................................................................ 1
2008 GMC Envoy and Envoy Denali Owner ManualM

GENERAL MOTORS, GM, the GM Emblem, GMC,
the GMC Truck Emblem and the names ENVOY, and
DENALI are registered trademarks of General Motors
Corporation.
This manual includes the latest information at the time it
was printed. We reserve the right to make changes
after that time without further notice. For vehicles rst
sold in Canada, substitute the name “General Motors of
Canada Limited” for GMC whenever it appears in this
manual.
This manual describes features that may be available in
this model, but your vehicle may not have all of them.
For example, more than one entertainment system may
be offered or your vehicle may have been ordered
without a front passenger or rear seats.
Keep this manual in the vehicle for quick reference.
Canadian Owners
A French language copy of this manual can be obtained
from your dealer/retailer or from:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
www.helminc.com
Propriétaires Canadiens
On peut obtenir un exemplaire de ce guide en français
auprès de concessionnaire ou à l’adresse suivante:
Helm Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
www.helminc.com
Litho in U.S.A.
Part No. 15912670 A First Printing
©2007 General Motors Corporation. All Rights Reserved.
ii

Using this Manual
Many people read the owner manual from beginning to
end when they rst receive their new vehicle to learn
about the vehicle’s features and controls. Pictures
and words work together to explain things.
Index
A good place to quickly locate information about the
vehicle is the Index in the back of the manual. It is
an alphabetical list of what is in the manual and
the page number where it can be found.
Safety Warnings and Symbols
There are a number of safety cautions in this book.
A box with the word CAUTION is used to tell about
things that could hurt you or others if you were to
ignore the warning.
{CAUTION:
These mean there is something that could hurt
you or other people.
We tell you what the hazard is and what to do to help
avoid or reduce the hazard. Please read these cautions.
If you do not, you or others could be hurt.
A circle with a slash
through it is a safety
symbol which means
“Do Not,” “Do Not do this”
or “Do Not let this
happen.”
iii

Vehicle Damage Warnings
You will also nd notices in this manual.
Notice:These mean there is something that could
damage your vehicle.
A notice tells about something that can damage the
vehicle. Many times, this damage would not be covered
by your vehicle’s warranty, and it could be costly.
The notice tells 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.
There are also warning labels on the vehicle which use
the same words, CAUTION or NOTICE.
Vehicle Symbols
The vehicle has components and labels that use
symbols instead of text. Symbols are shown along
with the text describing the operation or information
relating to a specic component, control, message,
gage, or indicator.
iv

Front Seats......................................................1-2
Manual Seats................................................1-2
Power Seats..................................................1-3
Manual Lumbar..............................................1-3
Power Lumbar...............................................1-4
Heated Seats.................................................1-4
Memory Seat, Mirrors, and Pedals....................1-5
Reclining Seatbacks........................................1-7
Head Restraints............................................1-10
Rear Seats.....................................................1-11
Rear Seat Operation.....................................1-11
Safety Belts...................................................1-13
Safety Belts: They Are for Everyone................1-13
How to Wear Safety Belts Properly.................1-18
Lap-Shoulder Belt.........................................1-26
Safety Belt Use During Pregnancy..................1-31
Safety Belt Extender.....................................1-31
Child Restraints.............................................1-32
Older Children..............................................1-32
Infants and Young Children............................1-35
Child Restraint Systems.................................1-38
Where to Put the Restraint.............................1-40Lower Anchors and Tethers for
Children (LATCH)......................................1-41
Securing a Child Restraint in a
Rear Outside Seat Position.........................1-47
Securing a Child Restraint in the
Center Rear Seat Position..........................1-49
Securing a Child Restraint in the
Right Front Seat Position............................1-50
Airbag System...............................................1-53
Where Are the Airbags?................................1-56
When Should an Airbag Inate?.....................1-58
What Makes an Airbag Inate?.......................1-59
How Does an Airbag Restrain?.......................1-59
What Will You See After an Airbag Inates?.....1-60
Passenger Sensing System............................1-61
Servicing Your Airbag-Equipped Vehicle...........1-66
Adding Equipment to Your
Airbag-Equipped Vehicle.............................1-66
Restraint System Check..................................1-68
Checking the Restraint Systems......................1-68
Replacing Restraint System Parts
After a Crash............................................1-69
Section 1 Seats and Restraint Systems
1-1

Front Seats
Manual Seats
{CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle
is moving. The sudden movement could startle
and confuse you, or make you push a pedal
when you do not want to. Adjust the driver’s
seat only when the vehicle is not moving.
Lift the bar located under the front of the seat to unlock
it. Slide the seat to where you want it and release
the bar. Try to move the seat with your body to be
sure the seat is locked in place.
1-2

Power Seats
On vehicles with power
seats, the controls used to
operate them are located
on the outboard side of
the seats.
To adjust the seat:
Move the seat forward or rearward using the
horizontal control.
Raise or lower the front of the seat cushion using
the front of the horizontal control.
Raise or lower the rear of the seat cushion using
the rear of the horizontal control.
Raise or lower the entire seat using the entire
horizontal control.For seats with power reclining seatbacks, see “Power
Reclining Seatbacks” underReclining Seatbacks
on page 1-7.
Manual Lumbar
On vehicles with this
feature, the knob is
located on the outboard
side of the driver’s seat.
Turn the knob to increase or decrease lumbar support.
1-3

Power Lumbar
On vehicles with power
lumbar, the control is
located on the outboard
side of the seat.
To increase or decrease support, hold the control
forward or rearward.
Heated Seats
Your vehicle may have
heated front seats. The
buttons used to control this
feature are located on the
front door armrests. The
engine must be running
for the heated seat feature
to work.
To heat the entire seat, press the horizontal button with
the heated seat and seatback symbol. Press the button to
cycle through the temperature settings of high, medium,
and low and to turn the heated seat off. The indicator
lights above the button will come on to designate the
level of heat selected: three for high, two for medium,
and one for low. The low setting warms the seatback
and seat cushion until the seat temperature is near
body temperature. The medium and high settings heat
the seatback and seat cushion to a slightly higher
temperature. You will be able to feel heat in about
two minutes.
1-4

To heat only the seatback, press the vertical button with
the heated seatback symbol. An indicator light on the
button will come on to designate that only the seatback
is being heated. Additional presses will cycle through
the heat levels for the seatback only.
The feature will shut off automatically when the ignition
is turned off.
Memory Seat, Mirrors, and Pedals
If your vehicle has this
feature, the controls for
the memory function are
located on the driver’s door.
These buttons are used to program and recall memory
settings for the driver’s seating position, both outside
mirror positions, and the adjustable pedals, if equipped.
The settings for these features can be saved for up
to two drivers.To store the memory settings, do the following:
1. Adjust the driver’s seat, including the seatback
recliner and lumbar, both of the outside mirrors,
and the adjustable pedals, if equipped, to the
desired position.
SeeAdjustable Throttle and Brake Pedal on
page 2-24for more information.
2. Press and hold the 1 or 2 button of the memory
control for three seconds. A double chime will
sound to let you know that the position has been
stored.
To repeat the procedure for a second driver, follow
the preceding steps, but press the other numbered
memory control button.
To recall the memory settings, do one of the following:
Press and release button 1 or 2 while the vehicle
is in PARK (P). A single chime will sound and
the memory position will be recalled.
If programmed to do so through the Driver
Information Center (DIC), pressing the unlock button
on the remote keyless entry transmitter will recall the
preset driver’s memory seat, mirrors, and adjustable
pedals position. The numbers on the back of the
transmitters, 1 or 2, correspond to the numbers
on the memory controls.
If programmed to do so through the DIC, placing the
key in the ignition will recall the driver’s memory seat,
mirrors, and adjustable pedals positions.
1-5

See “Seat Recall” underDIC Vehicle Customization on
page 3-58for more information.
To stop recall movement of the memory seat feature at
any time, press one of the memory buttons or power
seat controls.
Easy Exit Seat
The control for the easy exit seat function is located on
the driver’s door below the memory buttons 1 and 2.
The easy exit seat button is used to program and recall
the desired driver’s seat position when exiting or entering
the vehicle. The mirrors, power lumbar, recline, and
adjustable pedals, if equipped, positions will not be stored
or recalled when using the easy exit seat function.
The seat position can be saved for up to two drivers.
To store the easy exit seat position, do the following:
1. Press and release the 1 or 2 button of the memory
control for less than three seconds. The seat will
move to the stored memory position.
2. Adjust the seat to the desired exit position.
3. Press and hold the easy exit seat button for more
than three seconds. A double chime will sound to
let you know that the position has been stored
for the selected button 1 or 2.To repeat the procedure for a second driver, follow
the preceding steps, but press the other numbered
memory control button.
To recall the easy exit seat position, do one of the
following:
Press the easy exit seat button on the memory
control while the vehicle is in PARK (P). The
seat will move to the stored exit position.
Or, if the easy exit seat feature is activated in the
Driver Information Center (DIC), removing the key
from the ignition will move the seat to the exit
position. See “Easy Exit Seat” underDIC Vehicle
Customization on page 3-58for more information
on activating this feature in the DIC.
If an easy exit seat position has not been stored, the
default position is all the way rearward.
1-6