light GMC YUKON XL 2010 Owner's Manual

5. If, after reinstalling the child restraint and restartingthe vehicle, the on indicator is still lit, turn the
vehicle off. Then slightly recline the vehicle
seatback and adjust the seat cushion, if adjustable,
to make sure that the vehicle seatback is not
pushing the child restraint into the seat cushion.
Also make sure the child restraint is not trapped
under the vehicle head restraint. If this happens,
adjust the head restraint. See Head Restraints
on
page 2‑3.
6. Restart the vehicle. The passenger sensing system may or may not
turn off the airbag for a child in a child restraint
depending upon the child’s seating posture and
body build. It is better to secure the child restraint
in a rear seat.
If the Off Indicator is Lit for an
Adult-Size Occupant
If a person of adult-size is sitting in the right front
passenger seat, but the off indicator is lit, it could be
because that person is not sitting properly in the seat.
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Q: What if I added a snow plow? Will it keep theairbags 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
inflation.
Q: Because I have a disability, I have to get my vehicle modified. How can I find 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 8‑2.
In addition, your dealer and the service manual have
information about the location of the airbag sensors,
sensing and diagnostic module and airbag wiring.Restraint System Check
Checking the Restraint Systems
Safety Belts
Now and then, check that the safety belt reminder light,
safety belts, buckles, latch plates, retractors, and
anchorages are all working properly.
Look for any other loose or damaged safety belt system
parts that might keep a safety belt system from doing its
job. See your dealer to have it repaired. 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.
Make sure the safety belt reminder light is working.
See Safety Belt Reminders
on page 4‑31for more
information.
Keep safety belts clean and dry. See Care of Safety
Belts
on page 6‑111.
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Airbags
The airbag system does not need regularly scheduled
maintenance or replacement. Make sure the airbag
readiness light is working. SeeAirbag Readiness Light
on page 4‑32for more information.
Notice: If an airbag covering is damaged, opened,
or broken, the airbag may not work properly. Do not
open or break the airbag coverings. If there are any
opened or broken airbag covers, have the airbag
covering and/or airbag module replaced. For the
location of the airbag modules, see What Makes an
Airbag Inflate?
on page 2‑91. See your dealer for
service.
Replacing Restraint System Parts
After a Crash
{WARNING:
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.
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If the vehicle has been in a crash, do you need new
safety belts or LATCH system (if equipped) parts?
After a very minor crash, nothing may be necessary.
But the safety belt assemblies that were used during
any crash may have been stressed or damaged.
See your dealer to have the safety belt assemblies
inspected or replaced.
If the vehicle has the LATCH system and it was being
used during a crash, you may need new LATCH system
parts.New parts and repairs may be necessary even if the
safety belt or LATCH system (if equipped), was not
being used at the time of the crash.
If an airbag inflates, you will need to replace airbag
system parts. See the part on the airbag system earlier
in this section.
Have the safety belt pretensioners checked if the
vehicle has been in a crash, if the airbag readiness light
stays on after the vehicle is started, or while you are
driving. See
Airbag Readiness Light
on page 4‑32.
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K(Unlock):Press once to unlock only the driver
door. If
Kis pressed again within three seconds, all
remaining doors unlock. The interior lamps may come
on and stay on for 20 seconds or until the ignition is
turned on.
If enabled through the DIC, the turn signal lamps flash
twice to indicate unlocking has occurred. See DIC
Vehicle Customization (With DIC Buttons)
on
page 4‑72. If enabled through the DIC, the exterior
lights turn on briefly if it is dark enough outside.
See “APPROACH LIGHTING” underDIC Vehicle
Customization (With DIC Buttons)
on page 4‑72.
Pressing
Kon the RKE transmitter disarms the content
theft‐deterrent system. See Content Theft-Deterrent
on
page 3‑23.
m(Liftglass): For vehicles with a liftglass, press and
hold to unlock the liftglass.
&(Power Liftgate): For vehicles with a power
liftgate, press and hold to open and close the liftgate.
The taillamps flash and a chime sounds to indicate
when the liftgate is opening and closing.
L(Vehicle Locator/Panic Alarm): Press and release
to locate the vehicle. The turn signal lamps flash and
the horn sounds three times.
Press and hold
Lfor more than two seconds to
activate the panic alarm. The turn signal lamps flash
and the horn sounds repeatedly for 30 seconds.
The alarm turns off when the ignition is moved to
ON/RUN or
Lis pressed again. The ignition must
be in LOCK/OFF for the panic alarm to work.
The vehicle comes with two transmitters. Each
transmitter will have a number on it, “1”or“2”.
These numbers correspond to the driver of the vehicle.
For example, the memory seat position for driver 1
will be recalled when using the transmitter labeled “1”,
if enabled through the DIC. See Memory Seat,
Mirrors, and Pedals
on page 2‑10and DIC Vehicle
Customization (With DIC Buttons)on page 4‑72for more information.
3-6

/(Remote Start): This button will be on the RKE
transmitter if you have remote start.
To start the vehicle using the remote start feature:
1. Aim the transmitter at the vehicle.
2. Press and release the transmitter's lock button. The vehicle's doors will lock. Immediately press
and hold the transmitter's remote start button until
the turn signal lights flash. If you cannot see the
vehicle's lights, press and hold the remote start
button for two to four seconds. Pressing the remote
start button again after the vehicle has started will
turn the engine off.
When the vehicle starts, the parking lamps will turn
on and remain on while the vehicle is running.
If the vehicle is left running it will automatically shut
off after 10 minutes unless a time extension has
been done.
3. If it is the first remote start since the vehicle has been driven, repeat these steps, while the engine
is still running, to extend the engine running time
by 10 minutes. Remote start can be extended
one time.
After entering the vehicle during a remote start, insert
and turn the key to RUN to drive the vehicle. To manually shut off a remote start, do any of the
following:
.Aim the RKE transmitter at the vehicle and press
the remote start button until the parking lamps
turn off.
.Turn on the hazard warning flashers.
.Turn the ignition switch on and then off.
The vehicle can be remote started two separate times
between driving sequences. The engine will run for
10 minutes after each remote start.
Or, you can extend the engine run time by another
10 minutes within the first 10 minute remote start time
frame, and before the engine stops.
For example, if the lock button and then the remote start
buttons are pressed again after the vehicle has been
running for five minutes, 10 minutes are added, allowing
the engine to run for 15 minutes.
The additional ten minutes are considered a second
remote vehicle start.
Once two remote starts, or a single remote start with
one time extension has been done, the vehicle must be
started with the key. After the key is removed from the
ignition, the vehicle can be remote started again.
3-9

The vehicle cannot be remote started if the key is
in the ignition, the hood is not closed, or if there is an
emission control system malfunction and the check
engine light comes on.
Also, the engine will turn off during a remote vehicle
start if the coolant temperature gets too high or if the
oil pressure gets low.
Vehicles that have the remote vehicle start feature are
shipped from the factory with the remote vehicle start
system enabled. The system may be enabled or
disabled through the DIC. See“REMOTE START”
under DIC Vehicle Customization (With DIC Buttons)
on
page 4‑72for additional information. If your vehicle
does not have DIC buttons, see your dealer to enable
or disable the remote vehicle start system.
Remote Start Ready
If your vehicle does not have the remote vehicle start
feature, it may have the remote start ready feature.
This feature allows your dealer to add the
manufacturer's remote vehicle start feature.
See your dealer if you would like to add the
manufacturer's remote vehicle start feature to
your vehicle.
Doors and Locks
Door Locks
{WARNING:
Unlocked doors can be dangerous.
.Passengers, especially children, can easily
open the doors and fall out of a moving
vehicle. When a door is locked, the handle
will not open it. The chance of being thrown
out of the vehicle in a crash is increased if
the doors are not locked. So, all passengers
should wear safety belts properly and the
doors should be locked whenever the vehicle
is driven.
.Young children who get into unlocked vehicles
may be unable to get out. A child can be
overcome by extreme heat and can suffer
permanent injuries or even death from heat
stroke. Always lock the vehicle whenever
leaving it.
(Continued)
3-10

The power liftgate may be temporarily disabled under
extreme temperatures, or under low battery conditions.
If this occurs, the liftgate can still be operated manually.
If you shift the transmission out of P (Park) while the
power function is in progress, the liftgate power function
will continue to completion. If you shift the transmission
out of P (Park) and accelerate before the power liftgate
latches closed, the liftgate may reverse to the open
position. Cargo could fall out of the vehicle. Always
make sure the power liftgate is closed and latched
before you drive away.
If you power open the liftgate and the liftgate support
struts have lost pressure, the lights will flash and a
chime will sound. The liftgate will stay open temporarily,
then slowly close. See your dealer for service before
using the liftgate.Obstacle Detection Features
If the liftgate encounters an obstacle during a power
open or close cycle, a warning chime will sound and
the liftgate will automatically reverse direction to the full
closed or open position. After removing the obstruction,
the power liftgate operation can be used again. If the
liftgate encounters multiple obstacles on the same
power cycle, the power function will deactivate, and
you must manually open or close the liftgate. The
REAR ACCESS OPEN warning message in the Driver
Information Center (DIC) will indicate that the liftgate is
open. After removing the obstructions, manually open
the liftgate to the full open position or close the liftgate
to the fully closed and latched position. The liftgate will
now resume normal power operation.
Your vehicle has pinch sensors located on the side
edges of the liftgate. If an object is caught between
the liftgate and the body and presses against this
sensor, the liftgate will reverse direction and open fully.
The liftgate will remain open until it is activated again or
closed manually. Do not force the liftgate open or closed
during a power cycle.
3-17

Manual Operation of Power Liftgate
To change the liftgate to manual operation, press the
switch on the overhead console to the OFF position.
With the power liftgate disabled and all of the doors
unlocked, the liftgate can be manually opened and
closed.
To open the liftgate, press the touchpad on the handle
on the outside of the liftgate, and lift the gate open.
To close the liftgate, use the pull cup to lower the
liftgate and close. The liftgate latch will power close.
Always close the liftgate before driving.
If the RKE button or the power close button on the
liftgate is pressed while power operation is disabled, the
lights will flash three times, but the liftgate will not move.
It is not recommended that you drive with the liftgate
open, however, if you must drive with the liftgate open,
the liftgate should be set to manual operation by
pressing the OFF switch on the center console.
The liftgate has an electric latch. If the battery is
disconnected or has low voltage, the liftgate will not
open. The liftgate will resume operation when the
battery is reconnected and charged.
If the battery is properly connected with adequate
voltage, the switch is not disabled, and the liftgate
still will not function, your vehicle should be taken
to a dealer for service.
Power Assist Steps
Your vehicle may have power assist steps.
The power assist steps automatically extend from
beneath the vehicle on the side in which the door has
been opened. Once the door is closed, the assist steps
automatically move back under the vehicle after a brief
delay. The vehicle must not be moving for the assist
steps to extend or retract.
The switch used to
disable the power assist
steps is located on the
center console below the
climate control system.
The assist steps cannot be disabled in the extended
position.
3-18

Programming the Power Windows
If the battery on the vehicle has been recharged,
disconnected, or is not working, you will need to
reprogram each front power window for the express-up
feature to work. Before reprogramming, replace or
recharge the vehicle's battery.
To program each front window, follow these steps:1. With the ignition in ACC/ACCESSORY, ON/RUN, or when Retained Accessory Power (RAP) is
active, close all doors.
2. Press and hold the power window switch until the window is fully open.
3. Pull the power window switch up until the window is fully closed.
4. Continue holding the switch up for approximately two seconds after the window is completely closed.
The window is now reprogrammed. Repeat the process
for the other windows.
Window Lockout
o (Window Lockout): The rear window lockout button
is located on the driver door near the window switches.
Press the right side of the button to disable the rear
window controls. The light on the button will illuminate,
indicating the feature is in use. The rear windows still
can be raised or lowered using the driver window
switches when the lockout feature is active.
To restore power to the rear windows, press the button
again. The light on the button will go out.
Sun Visors
Swing down the visor to block out glare. It can also be
detached from the center mount and moved to the side
to block glare from that direction.
The driver visor may also have buttons for a built-in
garage door opener. See Universal Home Remote
System
on page 3‑69for more information.
Lighted Visor Vanity Mirror
Pull the visor down and lift the cover to access the
mirror. A light comes on when the cover is lifted and
goes out when it is closed.
3-22