2009 GMC YUKON roof

Servicing Your Airbag-Equipped
Vehicle
Airbags affect how the vehicle should be serviced.
There are parts of the airbag system in several places
around the vehicle. Your dealer/retailer and the
service manual have information about servicing the
vehicle and the airbag system. To purchase a service
manual, seeService Publications Ordering Information
on page 7-15.
{CAUTION:
For up to 10 seconds after the ignition 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.
Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to or change
about 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. Changing or moving any parts of
the front seats, safety belts, the airbag sensing and
diagnostic module, steering wheel, instrument panel,
roof-rail airbag modules, ceiling headliner or pillar
garnish trim, overhead console, front sensors, side
impact sensors, rollover sensor module, or airbag
wiring can affect the operation of the airbag system.
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In addition, your vehicle has a passenger sensing
system for the right front passenger’s position, which
includes sensors that are part of the passenger’s
seat. The passenger sensing system may not
operate properly if the original seat trim is replaced
with non-GM covers, upholstery or trim, or with GM
covers, upholstery or trim designed for a different
vehicle. Any object, such as an aftermarket seat
heater or a comfort enhancing pad or device,
installed under or on top of the seat fabric, could also
interfere with the operation of the passenger sensing
system. This could either prevent proper deployment
of the passenger airbag(s) or prevent the passenger
sensing system from properly turning off the
passenger airbag(s). SeePassenger Sensing
System on page 1-90.
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 7-2.
If your vehicle has rollover roof-rail airbags, see
Different Size Tires and Wheels on page 5-82
for additional important information.Q:What if I added a snow plow? Will it keep the
airbags from working properly?
A:We have designed our airbag systems to work
properly under a wide range of conditions, including
snow plowing with vehicles that have the optional
Snow Plow Prep Package (RPO VYU). But do
not change or defeat the snow plow’s “tripping
mechanism.” If you do, it can damage your snow
plow and your vehicle, and it may cause an airbag
ination.
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: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 7-2.
In addition, your dealer/retailer and the service manual
have information about the location of the airbag sensors,
sensing and diagnostic module and airbag wiring.
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Outside Automatic Dimming Mirror..................2-51
Park Tilt Mirrors............................................2-51
Outside Convex Mirror...................................2-52
Outside Heated Mirrors..................................2-52
Object Detection Systems...............................2-53
Ultrasonic Rear Parking Assist (URPA)..............2-53
Side Blind Zone Alert (SBZA).........................2-56
Rear Vision Camera (RVC)............................2-59
OnStar
®System.............................................2-64
Universal Home Remote System......................2-68
Universal Home Remote System Operation
(With Three Round LED)............................2-68Storage Areas................................................2-74
Glove Box...................................................2-74
Cupholders..................................................2-74
Center Console Storage.................................2-75
Luggage Carrier...........................................2-75
Rear Storage Area........................................2-76
Rear Seat Armrest........................................2-76
Cargo Cover................................................2-77
Sunroof.........................................................2-78
Section 2 Features and Controls
2-2

Retained Accessory Power (RAP)
The following vehicle accessories can be used for up to
10 minutes after the engine is turned off:
Audio System
Power Windows
OnStar®System (if equipped)
Sunroof (if equipped)
These features work when the key is in ON/RUN or
ACC/ACCESSORY. Once the key is turned from
ON/RUN to LOCK/OFF, the windows and sunroof
continue to work up to 10 minutes until any door
is opened. The radio continues to work for up to
10 minutes or until the driver door is opened.
Starting the Engine
If the vehicle is a Two-mode Hybrid, see the Two-mode
Hybrid manual for more information.
Move the shift lever to P (Park) or N (Neutral). The
engine will not start in any other position. To restart the
engine when the vehicle is are already moving, use
N (Neutral) only.
Notice:Do not try to shift to P (Park) if the vehicle
is moving. If you do, you could damage the
transmission. Shift to P (Park) only when the vehicle
is stopped.
Starting Procedure
1. With your foot off the accelerator pedal, turn the
ignition key to START. When the engine starts, let go
of the key. The idle speed will go down as the engine
gets warm. Do not race the engine immediately after
starting it. Operate the engine and transmission
gently to allow the oil to warm up and lubricate all
moving parts.
The vehicle has a Computer-Controlled Cranking
System. This feature assists in starting the engine
and protects components. If the ignition key is turned
to the START position, and then released when the
engine begins cranking, the engine will continue
cranking for a few seconds or until the vehicle starts.
If the engine does not start and the key is held in
START for many seconds, cranking will be stopped
after 15 seconds to prevent cranking motor damage.
To prevent gear damage, this system also prevents
cranking if the engine is already running. Engine
cranking can be stopped by turning the ignition
switch to the ACC/ACCESSORY or LOCK/OFF
position.
Notice:Cranking the engine for long periods of
time, by returning the key to the START position
immediately after cranking has ended, can overheat
and damage the cranking motor, and drain the
battery. Wait at least 15 seconds between each try,
to let the cranking motor cool down.
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Pull downward on the lid to access the rear oor
console cupholders.
There could also be cupholderslocated in the second
and third row seat armrest areas.
Center Console Storage
For vehicles with a console compartment, it is located
between the bucket seats.
Press the button and lift the lid to access the console
compartment.
A cupholder located in the rear of the console, swings
down for the rear seat passenger to use.
Luggage Carrier
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 can damage
the 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.
For vehicles with a luggage carrier, items can be loaded
on top of the vehicle.
The luggage carrier has siderails attached to the roof.
It can also have crossrails which can be moved back and
forth to help secure cargo. Tie the load to the siderails or
siderail supports.
Do not exceed the maximum vehicle capacity when
loading the vehicle. For more information on vehicle
capacity and loading, seeLoading the Vehicle on
page 4-33.
Make sure the cargo is properly loaded.
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To prevent damage or loss of cargo while driving,
periodically stop and check to make sure cargo is still
securely fastened.
If small heavy objects are placed on the roof, cut a
piece of 3/8 inch plywood to t inside the crossrails
and siderails to spread the load. Tie the plywood
to the siderail supports.
Tie the load and secure it to the crossrails or the
siderail supports. Use the crossrails only to keep
the load from sliding. To move a crossrail, lift
the release lever up, on both sides of the rail. Then
slide the crossrail to the desired position balancing
the force side to side. Press the release lever
down on both sides of the rail, down to tighten it.
Try to slide the crossrail back and forth slightly
to make sure it is tight.
To carry long items, move the crossrails as far
apart as possible. Tie the load to the crossrails and
the siderails or siderail supports. Also tie the
load to the bumpers, but do not tie the load so
tightly that the crossrails or siderails are damaged.
After moving a crossrail, be sure it is securely
locked into the siderail.A Center High-Mounted Stoplamp (CHMSL) is located
above the rear window glass.
Make sure items loaded on the roof of the vehicle do
not block or damage the CHMSL.
Rear Storage Area
For vehicles with a rear storage area, it is located in the
rear cargo area of the vehicle on the driver’s side
trim panel.
Turn the knobs and swing the storage door to access
the storage compartment. The door can be removed.
Rear Seat Armrest
For vehicle with a rear seat armrest, pull the loop at the
top of the armrest down to access the cupholders.
2-76

Sunroof
Your vehicle may be equipped with a power sliding
sunroof. To open or close the sunroof, the ignition needs
to be turned to ON/RUN, or Retained Accessory Power
(RAP) must be active. When RAP is active, the sunroof
will work for 10 minutes after the ignition is turned off, or
until a front door is opened. SeeRetained Accessory
Power (RAP) on page 2-26for more information.
There are two switches in
the overhead console that
operate the sunroof.Manual-Open/Manual-Close:To open the sunroof
press and hold the rear of the driver’s side switch until
the sunroof reaches the desired position. To close
the sunroof, press and hold the front of the driver’s side
switch until the sunroof reaches the desired position.
The sunshade will open automatically with the sunroof,
but can also be opened manually.
The sunroof has a comfort stop feature which stops the
sunroof from opening to the full-open position. From
the comfort stop position, press the rear of the driver’s
side switch a second time to open the sunroof to
the full-open position.
When the sunroof is opened, an air deector will
automatically raise. The air deector will retract when
the sunroof is closed.
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Express-Open/Express-Close:To express-open the
sunroof, fully press and release the rear of the driver’s
side switch. The sunroof will open automatically. To stop
the sunroof partway, press the switch a second time.
To express-close the sunroof, fully press and release
the front of the driver’s side switch. The sunroof will
close automatically. To stop the sunroof partway, press
the switch a second time. The sunshade will open
automatically with the sunroof, but can also be opened
manually.
The sunroof has a comfort stop feature which stops the
sunroof from opening to the full-open position. From the
comfort stop position, press the rear of the driver’s side
switch a second time to open the sunroof to the full-open
position.
When the sunroof is opened, an air deector will
automatically raise. The air deector will retract when the
sunroof is closed.
Vent:The sunroof has an express-vent open feature.
From the closed position, press the rear of the
passenger’s side switch to vent the sunroof. To stop
the sunroof partway, press the switch a second time.
To close the sunroof, press and hold the front of the
passenger’s side switch. To stop the sunroof partway,
release the switch.Anti-Pinch Feature:If an object is in the path of the
sunroof while it is closing, the anti-pinch feature will
detect the object and stop the sunroof from closing at
the point of the obstruction. The sunroof will then
open halfway, and the air deector will raise. To close
the sunroof once it has re-opened, refer to the
“Express-Close” or “Manual-Close” functions described
previously. If the sunroof is in the vent position, and
there is an object in the path of the sunroof when
it closing, the anti-pinch feature will detect the object
and stop the sunroof. To close the sunroof once it has
re-opened, refer to the “Manual-Close” or
“Express-Close” functions described previously.
Do not keep the sunroof open for long periods of time
while the vehicle is not in use. Debris can collect in
the tracks, damage the sunroof operation and plug the
water draining system.
2-79