2008 GMC YUKON seats

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
..............................................1-11
Safety Belts
.............................................1-30
Child Restraints
.......................................1-51
Airbag System
.........................................1-76
Restraint System Check
............................1-92
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-19
Theft-Deterrent Systems
............................2-22
Starting and Operating Your Vehicle
...........2-26
Mirrors
....................................................2-49
Object Detection Systems
..........................2-58
OnStar
®System
......................................2-60
Universal Home Remote System
................2-64
Storage Areas
.........................................2-71
Sunroof
..................................................2-74
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-23
Warning Lights, Gages, and Indicators
........3-37
Driver Information Center (DIC)
..................3-55
Audio System(s)
.......................................3-81Driving 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
......................................................... 5-5
Checking Things Under the Hood
...............5-12
Rear Axle
...............................................5-52
Four-Wheel Drive
.....................................5-54
Front Axle
...............................................5-55
Headlamp Aiming
.....................................5-56
Bulb Replacement
....................................5-59
Windshield Wiper Blade Replacement
.........5-62
Tires
......................................................5-64
Appearance Care
...................................5-108
Vehicle Identication
...............................5-116
Electrical System
....................................5-117
Capacities and Specications
...................5-124
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-14
Vehicle Data Recording and Privacy
...........7-16
Index................................................................ 1
2008 GMC Yukon, Yukon XL Owner ManualM

GENERAL MOTORS, GM, the GM Emblem, GMC, the
GMC Truck Emblem, and the name YUKON 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. 15854805 A First Printing
©2007 General Motors Corporation. All Rights Reserved.
ii

Front Seats......................................................1-2
Manual Seats................................................1-2
Power Seats..................................................1-3
Manual Lumbar..............................................1-4
Power Lumbar...............................................1-4
Heated Seats.................................................1-5
Memory Seat, Mirrors, and Pedals....................1-6
Reclining Seatbacks........................................1-8
Head Restraints............................................1-10
Center Seat.................................................1-11
Rear Seats.....................................................1-11
Heated Seats...............................................1-11
60/40 Split Bench Seat (Second Row).............1-12
Bucket Seats (Second Row)...........................1-18
Third Row Seat............................................1-25
Safety Belts...................................................1-30
Safety Belts: They Are for Everyone................1-30
How to Wear Safety Belts Properly.................1-35
Lap-Shoulder Belt.........................................1-43
Safety Belt Use During Pregnancy..................1-49
Lap Belt......................................................1-49
Safety Belt Extender.....................................1-50
Child Restraints.............................................1-51
Older Children..............................................1-51
Infants and Young Children............................1-54
Child Restraint Systems.................................1-57Where to Put the Restraint.............................1-60
Lower Anchors and Tethers for
Children (LATCH)......................................1-61
Securing a Child Restraint in a Rear Seat
Position...................................................1-69
Securing a Child Restraint in the Center
Front Seat Position....................................1-71
Securing a Child Restraint in the Right
Front Seat Position....................................1-72
Airbag System...............................................1-76
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
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.To move a manual seat forward or rearward:
1. Lift the bar to unlock
the seat.
2. Slide the seat to the
desired position and
release the bar.
Try to move the seat with your body to be sure the seat
is locked in place.
1-2

Power SeatsOn a vehicle with power seats, the controls used to
operate them are located on the outboard side of the
seats. To adjust the seat, do any of the following:
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.
On seats with power reclining seatbacks, the control is
located behind the power seat control on the outboard
side of the seats. See “Power Reclining Seatbacks”
underReclining Seatbacks on page 1-8.
A vehicle with a memory function allows seat settings to
be saved and recalled. SeeMemory Seat, Mirrors,
and Pedals on page 1-6for more information. Driver’s Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
1-3

Manual Lumbar
On vehicles with this feature, turn the knob forward or
rearward to increase or decrease lumbar support.
Power Lumbar
If the seats have power lumbar, the controls used to
operate this 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.
1-4

To raise the height of the lumbar support, press
and hold the top of the control.
To lower the height of the lumbar support, press
and hold the bottom of the control.
Release the control when the lower seatback reaches
the desired level of lumbar support.
Your vehicle may have a memory function which allows
seat settings to be saved and recalled. SeeMemory
Seat, Mirrors, and Pedals on page 1-6for 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.
Heated Seats
On vehicles with heated front seats, the controls are
located on the driver’s and passenger’s doors.
I(Heated Seatback):Press to turn on the heated
seatback.
J(Heated Seat and Seatback):Press 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 and
to turn the heat to the seat off. Indicator lights 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. To use the heated seat feature
after restarting your vehicle, press the heated seat
or seatback button again.
1-5

{CAUTION:
Sitting in a reclined position when your vehicle
is in motion can be dangerous. Even if you
buckle up, your safety belts cannot do their
job when you are reclined like this.
The shoulder belt cannot do its job. In a crash,
you could go into it, receiving neck or other
injuries.
The lap belt cannot do its job either. In a crash
the belt could go up over your abdomen. The
belt forces would be there, not at your pelvic
bones. This could cause serious internal
injuries.
For proper protection when the vehicle is in
motion, have the seatback upright. Then sit
well back in the seat and wear your safety belt
properly.
On seats with manual reclining seatbacks, the lever
used to operate them is located on the outboard side of
the seat(s).To recline the seatback:
1. Lift the recline lever.
2. Move the seatback to the desired position, then
release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is
locked.
To return the seatback to an upright position, do the
following:
1. Lift the lever fully without applying pressure to the
seatback and the seatback will return to the upright
position.
2. Push and pull on the seatback to make sure it is
locked.
1-9