2008 GMC YUKON DENALI mirror

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

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

To save your positions in memory, do the following:
1. Adjust the driver’s seat, including the seatback
recliner and lumbar, both outside mirrors, and
the throttle and brake pedals to a comfortable
position.
SeeOutside Power Foldaway Mirrors on page 2-42
andAdjustable Throttle and Brake Pedal on
page 2-29for more information.
Not all mirrors will have the ability to save and
recall the mirror positions.
2. Press and hold button 1 until two beeps let you
know that the position has been stored.
A second seating, mirror, and throttle and brake pedal
position can be programmed by repeating the above
steps and pressing button 2.
To recall the memory positions, the vehicle must be in
PARK (P). Press and release either button 1 or button 2
corresponding to the desired driving position. The
seat, outside mirrors, and adjustable throttle and brake
pedals will move to the position previously stored.
You will hear a single beep.If you use the remote keyless entry transmitter to enter
your vehicle and the remote recall memory feature
is on, automatic seat, mirror, and adjustable pedal
movement will occur. See “MEMORY SEAT RECALL”
underDIC Vehicle Customization (With DIC Buttons) on
page 3-64for more information.
To stop recall movement of the memory feature at any
time, press one of the power seat controls, memory
buttons, power mirror buttons, or adjustable pedal
switch.
If something has blocked the driver’s seat and/or the
adjustable pedals while recalling a memory position, the
driver’s seat and/or the adjustable pedals recall may
stop working. If this happens, press the appropriate
control for the area that is not recalling for two seconds,
after the obstruction is removed. Then try recalling
the memory position again by pressing the appropriate
memory button. If the memory position is still not
recalling, see your dealer for service.
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.
Do not have a seatback reclined if your vehicle is
moving.
Your vehicle has a memory function which allows seat
settings to be saved and recalled. SeeMemory Seat,
Mirrors, and Pedals on page 1-4.
1-7

Keys...............................................................2-3
Remote Keyless Entry (RKE) System................2-4
Remote Keyless Entry (RKE) System
Operation...................................................2-5
Remote Vehicle Start......................................2-8
Doors and Locks............................................2-10
Door Locks..................................................2-10
Power Door Locks........................................2-11
Delayed Locking...........................................2-11
Programmable Automatic
Door Locks...............................................2-11
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Liftgate/Liftglass............................................2-13
Power Liftgate..............................................2-15
Power Running Boards..................................2-18
Windows........................................................2-19
Power Windows............................................2-20
Sun Visors...................................................2-21
Theft-Deterrent Systems..................................2-21
Content Theft-Deterrent.................................2-22
PASS-Key
®III+............................................2-23
PASS-Key®III+ Operation..............................2-24Starting and Operating Your Vehicle................2-25
New Vehicle Break-In....................................2-25
Ignition Positions..........................................2-26
Retained Accessory Power (RAP)...................2-27
Starting the Engine.......................................2-27
Adjustable Throttle and Brake Pedal................2-29
Engine Coolant Heater..................................2-29
Automatic Transmission Operation...................2-30
Tow/Haul Mode............................................2-34
Parking Brake..............................................2-35
Shifting Into PARK (P)...................................2-36
Shifting Out of PARK (P)...............................2-37
Parking Over Things That Burn.......................2-38
Engine Exhaust............................................2-38
Running the Engine While Parked...................2-39
Mirrors...........................................................2-40
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display....................................................2-40
Outside Power Foldaway Mirrors.....................2-42
Object Detection Systems...............................2-44
Ultrasonic Rear Parking Assist (URPA)............2-44
Section 2 Features and Controls
2-1