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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, height,
front end or side sheet metal, 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 570.
Q:Because I have a disability, I have to get
my vehicle modi ed. 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, rollover sensor
module, 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. SeeCustomer
Satisfaction Procedure on page 570.
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Page 108 of 608

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 530for 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. Do not
open or break the airbag coverings.
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Page 140 of 608

Ignition Positions
Use the key to turn the ignition switch to
four different positions.
A (LOCK):This position locks the ignition and
transmission. It is a theft-deterrent feature. You will
only be able to remove the key when the ignition
is turned to LOCK.Notice:Using a tool to force the key from
the ignition switch could cause damage
or break the key. Use the correct key and turn
the key only with your hand. Make sure the
key is all the way in. If it is, turn the steering
wheel left and right while you turn the key
hard. If none of this works, then your vehicle
needs service.
B (ACCESSORY):This position lets you use
things like the radio and the windshield wipers
when the engine is off.
Notice:Lengthy operation of features such as
the radio in the accessory ignition position
and the RUN position may drain the battery and
prevent your vehicle from starting. Do not
operate your vehicle in the accessory ignition
position for a long period of time.
C (RUN):This is the position for driving. It is the
position the switch returns to after the engine
starts, and you release the key.
D (START):This position starts the engine.
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Page 146 of 608
PARK (P):This position locks your rear wheels. It
is the best position to use when you start your
engine because your vehicle cannot move easily.
When parked on a hill, especially when the
vehicle has a heavy load, you may notice an
increase in the effort to shift out of Park.
See Torque Lock (Automatic Transmission) under
Shifting Into Park (P) on page 153for more
information.
{CAUTION:
It is dangerous to get out of your vehicle
if the shift lever is not fully in PARK (P)
with the parking brake rmly set. Your
vehicle can roll.
Do not leave your vehicle when the engine
is running unless you have to. If you have
left the engine running, the vehicle can
move suddenly. You or others could be
injured. To be sure your vehicle will not
move, even when you are on fairly level
ground, always set your parking brake
and move the shift lever to PARK (P). See
Shifting Into Park (P) on page 153.Ifyou
are pulling a trailer, seeTowing a Trailer
on page 400.
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Page 147 of 608

REVERSE (R):Use this gear to back up.
Notice:Shifting to REVERSE (R) while your
vehicle is moving forward could damage
the transmission. The repairs would not
be covered by your warranty. Shift to
REVERSE (R) only after your vehicle is
stopped.
To rock your vehicle back and forth to get out
of snow, ice, or sand without damaging your
transmission, seeIf Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow on page 390.
NEUTRAL (N):In this position, your engine does
not connect with the wheels. To restart when
you are already moving, use NEUTRAL (N) only.
Also, use NEUTRAL (N) when your vehicle is
being towed.
{CAUTION:
Shifting into a drive gear while your
engine is running at high speed is
dangerous. Unless your foot is rmly on
the brake pedal, your vehicle could move
very rapidly. You could lose control and
hit people or objects. Do not shift into a
drive gear while your engine is running at
high speed.
Notice:Shifting out of PARK (P) or
NEUTRAL (N) with the engine running at high
speed may damage the transmission. The
repairs would not be covered by your warranty.
Be sure the engine is not running at high
speed when shifting your vehicle.
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Page 166 of 608

OnStar®Steering Wheel Controls
Your vehicle is equipped
with a Talk/Mute button
that can be used to
interact with OnStar
®.
SeeAudio Steering Wheel Controls on page 335
for more information.
When calling into voice mail systems or to dial
directory numbers, press this button once, wait for
the response, say the number(s) to be dialed,
wait for the number(s) to be repeated and then
say “dial.”
See the OnStar
®Owner’s guide for more
information.
Universal Home Remote
System
Universal Home Remote System
(With Three Round LED)
The Universal Home Remote System provides
a way to replace up to three hand-held
radio-frequency (RF) transmitters used to activate
devices such as garage door openers, security
systems, and home lighting.
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions:
1. This device may not cause harmful
interference.
2. This device must accept any interference
received, including interference that may
cause undesired operation.
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Page 179 of 608

Center Console Storage Area
Your vehicle has a console compartment between
the bucket seats.
To open it, press the button on the front of the
console and swing the console cover open.
The console may be equipped with an accessory
power outlet inside. SeeAccessory Power
Outlet(s) on page 213.
The rear of the console also has a cupholder
that swings down for the rear seat passengers
to use.
Luggage Carrier
You can load things on top of your vehicle with
this feature.
The luggage carrier has slats and siderails
attached to the roof and crossrails which can be
moved back and forth to help secure cargo. Tie the
load to the siderails or siderail supports.Notice:Loading cargo on the luggage carrier
that weighs more than 200 lbs (91 kg) or
hangs over the rear or sides of the vehicle
may damage your vehicle. Load cargo so that
it rests on the slats as far forward as
possible and against the side rails, making
sure to fasten it securely.
Don’t exceed the maximum vehicle capacity when
loading your vehicle. For more information on
vehicle capacity and loading, seeLoading Your
Vehicle on page 392.
To prevent damage or loss of cargo as you’re
leaving, check now and then to make sure
the luggage and cargo are still securely fastened.
Be sure the cargo is properly loaded.If small heavy objects are placed on the roof,
place the load in the area over the rear
wheels (behind the rear side door on
Yukon XL Denali models). If you need to, cut
a piece of 3/8 inch plywood to t inside
the crossrails and siderails to spread the load.
If plywood is used, tie it to the siderail
supports.
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Page 181 of 608

Cargo Cover
{CAUTION:
An improperly stored cargo cover could
be thrown about the vehicle during a
collision or sudden maneuver. You or
others could be injured. If you remove the
cover, always store it in the proper
storage location. When you put it back,
always be sure that it is securely
reattached.
If you have a cargo cover, you can use it to cover
items in the cargo area of your vehicle.
To use the cover, do the following:
1. Pull the cover handle toward the rear of the
vehicle.
2. Latch the cover posts into the retaining
sockets on the cargo area trim panels.To return the cover to the retracted position, do
the following:
1. Pull up on the cover handle to release the
cover posts from the retaining sockets.
2. Let the cover move forward to the full retracted
position.
To remove the cover, from a regular wheelbase
model, do the following:
1. Let the cover go all the way into the holder.
2. Then, grasping the driver’s side cover endcap,
push the cover endcap toward the passenger’s
side of the vehicle.
3. Swing the cover rearward and take it out of
the vehicle.
To put the cover in the vehicle, do the following:
1. Make sure the cover slot in the holder
faces rearward with the round surface
facing down.
2. Then, hold the cover at an angle and place
the cover endcap into the slot in the
passenger’s side trim panel.
3. Move the other end of the cover forward and
hold it next to the driver’s side trim panel slot.
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