GMC YUKON DENALI 2008 User 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) ....................................... 3-73
Driving 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 Identification ............................... 5-107
Electrical System .................................... 5-108
Capacities and Specifications ................... 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 Manual M

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 first
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 first 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 find 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 specific 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 .................................1-56
Where 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 Inflate? .....................1-81
What Makes an Airbag Inflate? .......................1-83
How Does an Airbag Restrain? .......................1-83
What Will You See After an Airbag Inflates? .....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. See Power Reclining Seatbacks on page 1-6.
Your vehicle has a memory function which allows seat
settings to be saved and recalled. See Memory
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. See Memory
Seat, Mirrors, and Pedals on page 1-4 for 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 and
to 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.
See Outside Power Foldaway Mirrors on page 2-42
and Adjustable Throttle and Brake Pedal on
page 2-29 for 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”
under DIC Vehicle Customization (With DIC Buttons) on
page 3-64 for 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

Easy Exit Seat
The control for this feature is located on the driver’s
door panel between buttons 1 and 2.
With the vehicle in PARK (P), the exit position can be
recalled by pressing the exit button. You will hear
a single beep. The driver’s seat will move back.
If the easy exit seat feature is on in the Driver
Information Center (DIC), automatic seat movement will
occur when the key is removed from the ignition.
See “EASY EXIT SEAT” under DIC Vehicle
Customization (With DIC Buttons) on page 3-64 for
more information.
Further programming for the memory seat feature can
be done using the DIC. You can select or not select the
following:
•The automatic easy exit seat feature
•The remote memory seat recall feature
For programming information, see DIC Vehicle
Customization (With DIC Buttons) on page 3-64.
Power Reclining Seatbacks
The controls for the power reclining seatback are
located on the outboard side of the front seats behind
the power seat control.
•To recline the seatback, tilt the top of the control
rearward.
•To bring the seatback forward, tilt the top of the
control forward.
Driver’s Seat with Power Seat Control, Power
Recline, and Power Lumbar shown
1-6

{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. See Memory Seat,
Mirrors, and Pedals on page 1-4.
1-7

Head Restraints
Adjust the head restraint so that the top of the restraint
is at the same height as the top of the occupant’s
head. This position reduces the chance of a neck injury
in a crash.
Pull the head restraint
up to raise it. To lower the
head restraint, press the
release button (A), located
on the top of the seatback,
while you push the head
restraint down.
The front seats may have head restraints that also tilt
forward and rearward.
To tilt the head restraint, grasp the top of the restraint
while pressing the button (B), located on the inboard
side of the head restraint, and move it forward or
rearward until the desired locking position is reached.
Try to move the head restraint after the button is
released to make sure that it is locked in place.
The second row seats may have head rests that can be
adjusted up and down, but they do not tilt.
1-8

Rear Seats
Heated Seats
The rear seats have the
heated seat feature, the
buttons used to control this
feature are located on
the Rear Seat Audio (RSA)
panel.
M(Heated Seat): To heat the seat cushion, press the
button with the heated seat symbol.
A heated seat symbol will be shown in the RSA display
to indicate that the feature is on. Press the button to
cycle through the temperature settings of high, medium,
and low, and to turn it off. Indicator bars next to the
symbol will designate 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 the vehicle is restarted, the
heated seat button will need to be pressed again to
restart the feature.
60/40 Split Bench Seat
(Second Row)
If your vehicle has a 60/40 split bench, the seat(s) can
be folded for additional cargo space or folded and
tumbled for easy entry and exit to the third row seats, if
your vehicle has them. These seats will have either
the manual fold and tumble feature or the automatic seat
release fold and tumble feature.
Driver’s Side RSA
Heated Seat Button
Only shown
1-9

Manual Fold and Tumble Feature
Folding and Tumbling the Seat(s)
To fold and tumble the seat, do the following:
1. Make sure that there is nothing under, in front of, or
on the seat.
Notice: Folding a rear seat with the safety belts still
fastened may cause damage to the seat or the safety
belts. Always unbuckle the safety belts and return
them to their normal stowed position before folding a
rear seat.
2. Lift the lever, located on the outboard side of the
seat, to release the seatback.
The seatback will fold forward automatically.
Leaving the seatback in this position creates a flat
load floor.
If the seatback cannot fold flat, try moving the front
seat forward and/or put the front seatback in the
upright position.
1-10

3. Lift the same lever
again to release the
rear of the seat
from the floor. The seat
will tumble forward.
Returning the Seat(s) to the Sitting
Position
To return the seat to the sitting position, do the following:
1. Pull the seat down until it latches to the floor. The
seatback cannot be raised if the seat is not latched
to the floor.
{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
push and pull on the seatback to be sure it is
locked.
2. Lift the seatback and push it rearward. Push and pull
on the seatback to make sure it is locked.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check to
be sure that the safety belts are properly routed
and attached, and are not twisted.
3. Make sure the safety belt in the center seating
position is not caught between the two seats and is
not twisted.
1-11

Folding and Tumbling the Seat(s) from the
Third Row Seats
{CAUTION:
Using the third row seating position while the
second row is folded, or folded and tumbled,
could cause injury in a sudden stop or crash.
Be sure to return the seat to the passenger
seating position. Push and pull on the seat to
make sure it is locked into place.
To fold and tumble the seat from the third rows, if your
vehicle has them, do the following:
1. Make sure that there is nothing under, in front of, or
on the seat.
Notice: Folding a rear seat with the safety belts
still fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts
and return them to their normal stowed position
before folding a rear seat.
2. Lift the lever(s), located on the bottom rear of the
second row seat(s) on the inboard side, to release
the seatback. The seatback will fold forward.
3. Lift the same lever again to release the rear of the
seat from the floor. The seat will tumble forward
automatically.
1-12

Automatic Release Fold and Tumble
Feature
The transmission must be in PARK (P) for this feature
to work.
Folding and Tumbling the Seat(s)
{CAUTION:
Automatically folding and tumbling the seat
when someone is sitting in the seat, could
cause injury to the person sitting there. Always
make sure there is no one sitting in the seat
before pressing the automatic seat release
button.
To fold and tumble the seat, do the following:
1. Make sure that there is nothing under, in front of, or
on the seat.
Notice: Folding a rear seat with the safety belts
still fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts
and return them to their normal stowed position
before folding a rear seat.
2. From the front seats,
press one of the
automatic seat release
buttons located on
the overhead console.
When accessing the third row seats, if your vehicle
has them, from the outside of the vehicle, press
the button on the panel behind either rear door.
One press of the button automatically folds
the seatback flat and tumbles the seat forward.
There will be a slight delay between the folding of
the seatback and the tumbling of the seat.
Overhead Console
Buttons shown, Panel
Button similar
1-13

Returning the Seat(s) to the Sitting
Position
To return the seat to the sitting position, do the following:
1. Pull the seat down until it latches to the floor. The
seatback cannot be raised if the seat is not latched
to the floor.
{CAUTION:
If the seatback is not locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
push and pull on the seatback to be sure it is
locked.
2. Lift the seatback and push it rearward. Push and
pull on the seatback to make sure it is locked.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted will not provide
the protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
3. Make sure that the safety belt in the center seating
position is not caught between the two seats and is
not twisted.
1-14

Folding and Tumbling the Second Row
Seat(s) from the Third Row Seats or
Outside
{CAUTION:
Using the third row seating position while the
second row is folded, or folded and tumbled,
could cause injury in a sudden stop or crash.
Be sure to return the seat to the passenger
seating position. Push and pull on the seat to
make sure it is locked into place.
To fold and tumble the seat from the third row seats, if
your vehicle has them, do the following:
1. Make sure that there is nothing under, in front of, or
on the seat.
Notice: Folding a rear seat with the safety belts
still fastened may cause damage to the seat or the
safety belts. Always unbuckle the safety belts
and return them to their normal stowed position
before folding a rear seat.
2. Press the automatic
seat release button
located on the panel
behind the rear doors.
One press of the button automatically folds the
seatback flat and tumbles the seat forward. There
will be a slight delay between the folding of the
seatback and the tumbling of the seat.
Driver’s Side Rear Panel
Button shown
1-15

Bucket Seats (Second Row)
If your vehicle has bucket seats, the seatbacks can be
reclined, the seats can be folded for additional cargo
space, or folded and tumbled for easy entry and exit to
the third row seats, if your vehicle has them. These
seats will have either the manual fold and tumble feature
or the automatic seat release fold and tumble feature.
Reclining Seatbacks
To recline the seatback, do the following:
1. Lift the lever located on the outboard side of the seat.
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.
1-16