2008 GMC YUKON DENALI Owners Manual

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-9
Safety Belts
.............................................1-28
Child Restraints
.......................................1-49
Airbag System
.........................................1-75
Restraint System Check
............................1-92
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-19
Theft-Deterrent Systems
............................2-21
Starting and Operating Your Vehicle
...........2-25
Mirrors
....................................................2-40
Object Detection Systems
..........................2-44
OnStar
®System
......................................2-47
Universal Home Remote System
................2-50
Storage Areas
.........................................2-58
Sunroof
..................................................2-62
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-23
Warning Lights, Gages, and Indicators
........3-31
Driver Information Center (DIC)
..................3-49
Audio System(s)
.......................................3-73Driving 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
All-Wheel Drive
........................................5-45
Rear Axle
...............................................5-46
Front Axle
...............................................5-47
Headlamp Aiming
.....................................5-48
Bulb Replacement
....................................5-50
Windshield Wiper Blade Replacement
.........5-53
Tires
......................................................5-55
Appearance Care
.....................................5-98
Vehicle Identication
...............................5-107
Electrical System
....................................5-108
Capacities and Specications
...................5-114
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-13
Vehicle Data Recording and Privacy
...........7-15
Index.................................................................1
2008 GMC Yukon Denali/Yukon XL Denali Owner ManualM

GENERAL MOTORS, GM, the GM Emblem, GMC, the
GMC Truck Emblem, and the names YUKON 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, so it will be there if it is
needed while you are on the road. If the vehicle is
sold, leave this manual in the vehicle.
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. 15854807 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
Power Seats..................................................1-2
Power Lumbar...............................................1-3
Heated Seats.................................................1-4
Memory Seat, Mirrors, and Pedals....................1-4
Power Reclining Seatbacks..............................1-6
Head Restraints.............................................1-8
Rear Seats.......................................................1-9
Heated Seats.................................................1-9
60/40 Split Bench Seat (Second Row)...............1-9
Bucket Seats (Second Row)...........................1-16
Third Row Seat............................................1-23
Safety Belts...................................................1-28
Safety Belts: They Are for Everyone................1-28
How to Wear Safety Belts Properly.................1-33
Lap-Shoulder Belt.........................................1-41
Safety Belt Use During Pregnancy..................1-47
Lap Belt......................................................1-47
Safety Belt Extender.....................................1-48
Child Restraints.............................................1-49
Older Children..............................................1-49
Infants and Young Children............................1-52
Child Restraint Systems.................................1-56Where to Put the Restraint.............................1-58
Lower Anchors and Tethers for Children
(LATCH)..................................................1-60
Securing a Child Restraint in a Rear
Seat Position............................................1-68
Securing a Child Restraint in the Center
Front Seat Position....................................1-71
Securing a Child Restraint in the Right
Front Seat Position....................................1-71
Airbag System...............................................1-75
Where Are the Airbags?................................1-78
When Should an Airbag Inate?.....................1-81
What Makes an Airbag Inate?.......................1-83
How Does an Airbag Restrain?
.......................1-83
What Will You See After an Airbag Inates?.....1-84
Passenger Sensing System............................1-85
Servicing Your Airbag-Equipped Vehicle...........1-90
Adding Equipment to Your Airbag-Equipped
Vehicle....................................................1-90
Restraint System Check..................................1-92
Checking the Restraint Systems......................1-92
Replacing Restraint System Parts After
a Crash...................................................1-93
Section 1 Seats and Restraint Systems
1-1

Front Seats
Power Seats
The power seat controls are located on the outboard
side of the front seats.
Move the seat forward or rearward by sliding the
control forward or rearward.
Raise or lower the front part of the seat cushion by
moving the front of the control up or down.
Raise or lower the rear part of the seat cushion by
moving the rear of the control up or down.
Raise or lower the entire seat by moving the entire
control up or down.
The power reclining seatback control is located behind
the power seat control on the outboard side of the
seats. SeePower Reclining Seatbacks on page 1-6.
Your vehicle has a memory function which allows seat
settings to be saved and recalled. SeeMemory
Seat, Mirrors, and Pedals on page 1-4.
Driver’s Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
1-2

Power Lumbar
The controls used to operate the power lumbar feature
are located on the outboard side of the seats.
To increase lumbar support, press and hold the
front of the control.
To decrease lumbar support, press and hold the
rear of the control.
To raise the height of the support, press and hold
the top of the control.
To lower the height of the support, press and hold
the bottom of the control.
Let go of the control when the lower seatback reaches
the desired level of support.
Your vehicle has a memory function which allows seat
settings to be saved and recalled. SeeMemory
Seat, Mirrors, and Pedals on page 1-4for more
information.
Keep in mind that as your seating position changes, as
it may during long trips, so should the position of
your lumbar support. Adjust the seat as needed.
1-3

Heated Seats
The seats have the heated
seat feature, the buttons
used to control this feature
are located on the front
doors near the door
handle.
I(Heated Seatback):Press this button to turn on the
heated seatback.
The light on the button will come on to indicate that the
feature is working. Press the button to cycle through the
temperature settings of high, medium, and low and to turn
the heat to the seatback off. Indicator lights below the
button show the level of heat selected:
three for high, two for medium, and one for low.
J(Heated Seat and Seatback):Press this button to
turn on the heated seat and seatback.
The light on the button will come on to indicate that the
feature is working. Press the button to cycle through
the temperature settings of high, medium, and low andto turn the heat to the seat off. Indicator lights above the
button will show the level of heat selected: three for
high, two for medium, and one for low.
The heated seats will be canceled ten seconds after the
ignition is turned off. If you want to use the heated
seat feature after you restart your vehicle, you will need
to press the appropriate heated seat or seatback
button again.
Memory Seat, Mirrors, and Pedals
Your vehicle has the memory package.
The controls for this
feature are located on the
driver’s door panel, and
are used to program
and recall memory settings
for the driver’s seat,
outside mirrors, and the
adjustable throttle and
brake pedal feature if your
vehicle has it.
1-4