2012 GMC YUKON Owner's Manual

Black plate (23,1)GMC Yukon/Yukon XL Owner Manual - 2012
Keys, Doors, and Windows 2-23
The sunroof only operates when the
ignition is in ON/RUN or ACC/
ACCESSORY, or in Retained
Accessory Power (RAP). See
Retained Accessory Power (RAP)
on page 9‑27for more information.
To open or close the sunroof, press
the open or close switch (A) to the
first detent position.
To express open or close the
sunroof, press the open or close
switch (A) to the second detent
position and release. To stop the
movement, press the switch again.
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 open or close switch (A) a
second time to open the sunroof to
the full-open position. To automatically vent or close the
sunroof, press the vent open or
close switch (B).
When the sunroof is opened, an air
deflector will automatically raise.
The air deflector will retract when
the sunroof is closed.
The sunroof also has a sunshade
which can be pulled forward to block
sun rays. The sunshade must be
opened and closed manually.
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.
Dirt and debris may collect on the
sunroof seal or in the track. This
could cause an issue with sunroof
operation or noise. It could also plug
the water drainage system.
Periodically open the sunroof and
remove any obstacles or loose
debris. Wipe the sunroof seal and
roof sealing area using a clean
cloth, mild soap, and water. Do not
remove grease from the sunroof.

Black plate (24,1)GMC Yukon/Yukon XL Owner Manual - 2012
2-24 Keys, Doors, and Windows
2NOTES

Black plate (1,1)GMC Yukon/Yukon XL Owner Manual - 2012
Seats and Restraints 3-1
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats
Seat Adjustment . . . . . . . . . . . . . . 3-3
Center Seat . . . . . . . . . . . . . . . . . . . 3-4
Power Seat Adjustment . . . . . . . 3-4
Lumbar Adjustment . . . . . . . . . . . 3-4
Reclining Seatbacks . . . . . . . . . . 3-5
Memory Seats . . . . . . . . . . . . . . . . 3-7
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Rear Seats
Heated Rear Seats . . . . . . . . . . 3-10
Second Row Seats . . . . . . . . . . 3-11
Third Row Seats . . . . . . . . . . . . . 3-16
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . 3-20
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . 3-21
Lap-Shoulder Belt . . . . . . . . . . . 3-22 Safety Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . 3-27
Lap Belt . . . . . . . . . . . . . . . . . . . . . 3-28
Safety Belt Extender . . . . . . . . . 3-28
Safety System Check . . . . . . . . 3-29
Safety Belt Care . . . . . . . . . . . . . 3-29
Replacing Safety Belt System Parts after a Crash . . . . . . . . . 3-29
Airbag System
Airbag System . . . . . . . . . . . . . . . 3-30
Where Are the Airbags? . . . . . 3-32
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . 3-34
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . 3-35
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-36
What Will You See after an Airbag Inflates? . . . . . . . . . . . . 3-36
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 3-38
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . 3-42 Adding Equipment to the
Airbag-Equipped Vehicle . . . 3-42
Airbag System Check . . . . . . . . 3-44
Replacing Airbag System Parts after a Crash . . . . . . . . . 3-44
Child Restraints
Older Children . . . . . . . . . . . . . . . 3-45
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . 3-47
Child Restraint Systems . . . . . 3-50
Where to Put the Restraint . . . 3-51
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . 3-53
Replacing LATCH System Parts After a Crash . . . . . . . . . 3-60
Securing Child Restraints (Rear Seat Position) . . . . . . . . 3-60
Securing Child Restraints (Center Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-63
Securing Child Restraints (Right Front Seat
Position) . . . . . . . . . . . . . . . . . . . 3-63

Black plate (2,1)GMC Yukon/Yukon XL Owner Manual - 2012
3-2 Seats and Restraints
Head Restraints
{WARNING
With head restraints that are not
installed and adjusted properly,
there is a greater chance that
occupants will suffer a neck/
spinal injury in a crash. Do not
drive until the head restraints for
all occupants are installed and
adjusted properly.
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.
Front Seats
The front seats have adjustable
head restraints in the outboard
seating positions.
The height of the head restraint can
be adjusted. Pull the head restraint
up to raise it. Try to move the head
restraint to make sure that it is
locked in place.
To lower the head restraint, press
the button, located on the top of the
seatback, and push the head
restraint down. Try to move the
head restraint after the button is
released to make sure that it is
locked in place.
The front seat outboard head
restraints are not designed to be
removed.

Black plate (3,1)GMC Yukon/Yukon XL Owner Manual - 2012
Seats and Restraints 3-3
Rear Seats
The vehicle's second-row seats
have head restraints in the outboard
seating positions that cannot be
adjusted.
The vehicle's third-row seats,
if equipped, have adjustable
headrests in the outboard seating
positions.
The height of the headrest can be
adjusted. Pull the headrest up to
raise it. To lower the headrest, push
down on the headrest.
Rear seat head restraints and
headrests are not designed to be
removed.
Front Seats
Seat Adjustment
{WARNING
You can lose control of the
vehicle if you try to adjust a
manual driver seat while the
vehicle is moving. The sudden
movement could startle and
confuse you, or make you push a
pedal when you do not want to.
Adjust the driver seat only when
the vehicle is not moving.
To adjust the seat:
1. Lift the bar under the front edgeof the seat cushion to unlock
the seat.
2. Slide the seat to the desired position and release the bar.
3. Try to move the seat back and forth to be sure the seat is
locked in place.

Black plate (4,1)GMC Yukon/Yukon XL Owner Manual - 2012
3-4 Seats and Restraints
Center Seat
If equipped, the center front
seatback doubles as an armrest and
cupholder/storage area for the driver
and passenger when the center
front seat is not used. Do not use it
as a seating position when the
seatback is folded down.
Power Seat Adjustment
To adjust a power seat, if equipped:
.Move the seat forward or
rearward by sliding the control
forward or rearward.
.If available, raise or lower the
front or rear part of the seat
cushion by moving the front or
rear of the control up or down.
.If available, raise or lower the
entire seat by moving the entire
control up or down.
To adjust the seatback, see “Power
Reclining Seatbacks” under
Reclining Seatbacks on page 3‑5.
Lumbar Adjustment
Manual Lumbar
If equipped, increase or decrease
manual lumbar support by turning
the knob forward or rearward.

Black plate (5,1)GMC Yukon/Yukon XL Owner Manual - 2012
Seats and Restraints 3-5
Power Lumbar
To adjust the power lumbar support,
if equipped:
.On vehicles with two-way
lumbar, press and hold the top
or bottom of the control to
increase or decrease lumbar
support.
.On vehicles with four-way
lumbar, press and hold the front
or rear of the control to increase
or decrease lumbar support.To raise or lower the height of
the support, press and hold the
top or bottom of the control.
Reclining Seatbacks
{WARNING
Sitting in a reclined position when
the vehicle is in motion can be
dangerous. Even when buckled
up, the safety belts cannot do
their job when reclined like this.
The shoulder belt cannot do its
job because it will not be against
your body. Instead, it will be in
front of you. 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.
(Continued)
WARNING (Continued)
For proper protection when the
vehicle is in motion, have the
seatback upright. Then sit well
back in the seat and wear the
safety belt properly.
Do not have a seatback reclined if
the vehicle is moving.

Black plate (6,1)GMC Yukon/Yukon XL Owner Manual - 2012
3-6 Seats and Restraints
Manual Reclining Seatbacks
{WARNING
You can lose control of the
vehicle if you try to adjust a
manual driver seat while the
vehicle is moving. The sudden
movement could startle and
confuse you, or make you push a
pedal when you do not want to.
Adjust the driver seat only when
the vehicle is not moving.
{WARNING
If either 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
seatbacks to be sure they are
locked.
To adjust a manual seatback:
1. Lift the lever.The seatback will automatically
fold forward. 2. To recline, move the seatback
rearward 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.
To return the seatback to the upright
position:
1. Lift the lever fully without applying pressure to the
seatback, and the seatback will
return to the upright position.
2. Push and pull on the seatback to make sure it is locked.