GMC YUKON XL 2007 Owners Manual

The passenger sensing system works with sensors
that are part of the right front passenger’s seat and
safety belt. The sensors are designed to detect the
presence of a properly-seated occupant and
determine if the passenger’s airbag should be
enabled (may inate) or not.
Accident statistics show that children are safer if
they are restrained in the rear rather than the front
seat. General Motors recommends that child
restraints be secured in a rear seat, including an
infant riding in a rear-facing infant seat, a child
riding in a forward-facing child seat and an older
child riding in a booster seat.
Your vehicle has a rear seat that will accommodate
a rear-facing child restraint. A label on your sun
visor says, “Never put a rear-facing child seat
in the front.” This is because the risk to the
rear-facing child is so great, if the airbag deploys.
{CAUTION:
A child in a rear-facing child restraint can
be seriously injured or killed if the right
front passenger’s airbag inates. This is
because the back of the rear-facing child
restraint would be very close to the
inating airbag.
Even though the passenger sensing
system is designed to turn off the
passenger’s frontal airbag if the system
detects a rear-facing child restraint, no
system is fail-safe, and no one can
guarantee that an airbag will not deploy
under some unusual circumstance, even
though it is turned off. We recommend
that rear-facing child restraints be secured
in the rear seat, even if the airbag is off.
If you need to secure a forward-facing
child restraint in the right front seat,
always move the front passenger seat as
far back as it will go. It is better to secure
the child restraint in a rear seat.
101

The passenger sensing system is designed to turn
off the right front passenger’s airbag if:
the right front passenger seat is unoccupied
the system determines that an infant is present
in a rear-facing infant seat
the system determines that a small child is
present in a forward-facing child restraint
the system determines that a small child is
present in a booster seat
a right front passenger takes his/her weight off
of the seat for a period of time
the right front passenger seat is occupied by a
smaller person, such as a child who has
outgrown child restraints
or if there is a critical problem with the airbag
system or the passenger sensing system.
When the passenger sensing system has turned
off the passenger’s airbag, the off indicator will light
and stay lit to remind you that the airbag is off.
If a child restraint has been installed and the on
indicator is lit, turn the vehicle off. Remove the child
restraint from the vehicle and reinstall the child
restraint following the child restraint manufacturer’s
directions and refer toSecuring a Child Restraint in
the Right Front Seat Position on page 86.If after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, check to make
sure that the vehicle’s seatback is not pressing the
child restraint into the seat cushion. If this happens,
slightly recline the vehicle’s seatback and adjust the
seat cushion if possible. Also make sure the child
restraint is not trapped under the vehicle head
restraint. If this happens, adjust the head restraint.
If the on indicator is still lit, secure the child in the
child restraint in a rear seat position in the
vehicle and check with your dealer.
The passenger sensing system is designed to
enable (may inate) the right front passenger’s
airbag anytime the system senses that a person
of adult size is sitting properly in the right front
passenger’s seat. When the passenger sensing
system has allowed the airbag to be enabled, the
on indicator will light and stay lit to remind you
that the airbag is active.
For some children who have outgrown child
restraints and for very small adults, the passenger
sensing system may or may not turn off the right
front passenger’s airbag, depending upon the
person’s seating posture and body build. Everyone
in your vehicle who has outgrown child restraints
should wear a safety belt properly — whether or not
there is an airbag for that person.
102

If a person of adult-size is sitting in the right front
passenger’s seat, but the off indicator is lit, it could
be because that person is not sitting properly in the
seat. If this happens, turn the vehicle off and ask
the person to place the seatback in the fully upright
position, then sit upright in the seat, centered on the
seat cushion, with the person’s legs comfortably
extended. Restart the vehicle and have the person
remain in this position for about two minutes. This
will allow the system to detect that person and then
enable the passenger’s airbag.
{CAUTION:
If the airbag readiness light in the
instrument panel cluster ever comes on
and stays on, it means that something
may be wrong with the airbag system.
If this ever happens, have the vehicle
serviced promptly, because an adult-size
person sitting in the right front
passenger’s seat may not have the
protection of the frontal airbag. See
Airbag Readiness Light on page 227for
more on this, including important safety
information.
103

Aftermarket equipment, such as seat covers,
can affect how well the passenger sensing system
operates. You may want to consider not using
seat covers or other aftermarket equipment if your
vehicle has the passenger sensing system. See
Adding Equipment to Your Airbag-Equipped
Vehicle on page 105for more information about
modications that can affect how the system
operates.
{CAUTION:
Stowing of articles under the passenger’s
seat or between the passenger’s seat
cushion and seatback may interfere with
the proper operation of the passenger
sensing system.
Servicing Your Airbag-Equipped
Vehicle
Airbags affect how your vehicle should be serviced.
There are parts of the airbag system in several
places around your vehicle.You do not want the system to inate while
someone is working on your vehicle. Your dealer
and the service manual have information about
servicing your vehicle and the airbag system. To
purchase a service manual, seeService
Publications Ordering Information on page 590.
{CAUTION:
For up to 10 seconds after the ignition key
is turned off and the battery is
disconnected, an airbag can still inate
during improper service. You can be
injured if you are close to an airbag when
it inates. Avoid yellow connectors. They
are probably part of the airbag system. Be
sure to follow proper service procedures,
and make sure the person performing
work for you is qualied to do so.
The airbag system does not need regular
maintenance.
104

Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your
vehicle’s frame, bumper system, front end or
side sheet metal or height, they may keep the
airbag system from working properly. Also, the
airbag system may not work properly if you
relocate any of the airbag sensors. If you have
any questions about this, you should contact
Customer Assistance before you modify your
vehicle. The phone numbers and addresses for
Customer Assistance are in Step Two of the
Customer Satisfaction Procedure in this
manual. SeeCustomer Satisfaction Procedure
on page 572.
Q:Because I have a disability, I have to get
my vehicle modied. How can I nd out
whether this will affect my airbag system?
A:Changing or moving any parts of the front
seats, safety belts, the airbag sensing and
diagnostic module (located under the driver’s
seat), rollover sensor module (located under
the center console), instrument panel, steering
wheel, ceiling headliner, ceiling and pillar
garnish trim, roof-mounted rollover airbag
modules or airbag wiring can affect the
operation of the airbag system. If you have
questions, call Customer Assistance. The
phone numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual. See
Customer Satisfaction Procedure on page 572.
105

Restraint System Check
Checking the Restraint Systems
Now and then, make sure the safety belt reminder
light and all your belts, buckles, latch plates,
retractors and anchorages are working properly.
Look for any other loose or damaged safety
belt system parts. If you see anything that might
keep a safety belt system from doing its job, have
it repaired. Keep safety belts clean and dry.
SeeCare of Safety Belts on page 531for more
information.
Torn or frayed safety belts may not protect you in
a crash. They can rip apart under impact forces.
If a belt is torn or frayed, get a new one right away.Also look for any opened or broken airbag
covers, and have them repaired or replaced.
(The airbag system does not need regular
maintenance.)
Notice:If you damage the covering for the
driver’s or the right front passenger’s airbag,
or the side impact airbag covering on the
ceiling near the side windows, the airbag may
not work properly. You may have to replace
the airbag module in the steering wheel, both
the airbag module and the instrument panel
for the right front passenger’s airbag, or
side impact airbag module and ceiling covering
for roof-mounted rollover airbags (if equipped.)
Do not open or break the airbag coverings.
106

Replacing Restraint System Parts
After a Crash
{CAUTION:
A crash can damage the restraint systems
in your vehicle. A damaged restraint
system may not properly protect the
person using it, resulting in serious injury
or even death in a crash. To help make
sure your restraint systems are working
properly after a crash, have them
inspected and any necessary
replacements made as soon as possible.
If you have had a crash, do you need new belts or
LATCH system parts?
After a very minor collision, nothing may be
necessary. But if the belts were stretched, as they
would be if worn during a more severe crash,
then you need new parts.
If the LATCH system was being used during a
more severe crash, you may need new LATCH
system parts.If belts are cut or damaged, replace them.
Collision damage also may mean you will need to
have LATCH system, safety belt or seat parts
repaired or replaced. New parts and repairs may
be necessary even if the belt or LATCH system
was not being used at the time of the collision.
If an airbag inates, you will need to replace airbag
system parts. See the part on the airbag system
earlier in this section.
If the airbags inate you will also need to replace
the driver and front passenger’s safety belt
retractor assembly. Be sure to do so. Then the
new retractor assembly will be there to help protect
you in a collision.
After a crash you may need to replace the driver
and front passenger’s safety belt retractor
assemblies, even if the airbags have not deployed.
The driver and front passenger’s safety belt
retractor assemblies contain the safety belt
pretensioners. Have your safety belt pretensioners
checked if your vehicle has been in a collision, or if
your airbag readiness light stays on after you start
your vehicle or while you are driving. SeeAirbag
Readiness Light on page 227.
107

✍NOTES
108

Keys.............................................................111
Remote Keyless Entry System.....................112
Remote Keyless Entry System Operation......113
Doors and Locks.........................................120
Door Locks................................................120
Power Door Locks......................................121
Delayed Locking.........................................121
Programmable Automatic Door Locks.........121
Rear Door Security Locks..........................122
Lockout Protection......................................122
Liftgate/Liftglass..........................................123
Power Liftgate............................................125
Power Running Boards...............................129
Windows......................................................130
Power Windows.........................................131
Sun Visors.................................................132
Theft-Deterrent Systems..............................132
Content Theft-Deterrent..............................132
PASS-Key
®III+..........................................134
PASS-Key®III+ Operation..........................134
Starting and Operating Your Vehicle..........136
New Vehicle Break-In.................................136
Ignition Positions........................................137Retained Accessory Power (RAP)..............138
Starting the Engine.....................................138
Adjustable Throttle and Brake Pedal...........140
Engine Coolant Heater...............................140
Displacement on Demand™ (DoD™)..........141
Automatic Transmission Operation..............142
Tow/Haul Mode..........................................145
Four-Wheel Drive.......................................146
Parking Brake............................................151
Shifting Into Park (P)..................................152
Shifting Out of Park (P)..............................154
Parking Over Things That Burn..................154
Engine Exhaust..........................................155
Running the Engine While Parked..............156
Mirrors..........................................................157
Automatic Dimming Rearview Mirror with
OnStar
®, Compass and Temperature
Display....................................................157
Automatic Dimming Rearview Mirror with
Compass and Temperature Display.........160
Outside Manual Mirrors..............................163
Outside Trailer-Tow Mirrors........................163
Outside Power Mirrors................................164
Section 2 Features and Controls
109

Outside Power Foldaway Mirrors................165
Outside Automatic Dimming Mirror.............166
Outside Curb View Assist Mirrors...............166
Outside Convex Mirror................................166
Outside Heated Mirrors..............................167
OnStar
®System...........................................167
Universal Home Remote System.................169
Universal Home Remote System................169
Universal Home Remote System
Operation................................................170Storage Areas..............................................174
Glove Box..................................................174
Cupholder(s)...............................................174
Center Console Storage Area.....................175
Luggage Carrier.........................................175
Rear Storage Area.....................................176
Rear Seat Armrest.....................................176
Cargo Cover..............................................176
Cargo Management System.......................178
Sunroof........................................................181
Section 2 Features and Controls
110