Page 30 of 518

Black plate (24,1)GMC Yukon/Yukon XL Owner Manual - 2012
1-24 In Brief
Universal Remote System
Vehicles with the Universal Remote
System will have these buttons
located in the headliner.
This system provides a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Read the instructions completely
before attempting to program the
transmitter. Because of the steps
involved, it may be helpful to have
another person assist with
programming the transmitter.
SeeUniversal Remote System on
page 5‑55.
Sunroof
A. Open or Close
B. Vent
On vehicles with a sunroof, there
are two sunroof switches on the
overhead console above the
rearview mirror. The sunroof only operates when the
ignition is in the ACC/ACCESSORY
or ON/RUN or the Retained
Accessory Power (RAP) is active.
See
Retained Accessory Power
(RAP) on page 9‑27 for 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.
Page 35 of 518

Black plate (1,1)GMC Yukon/Yukon XL Owner Manual - 2012
Keys, Doors, and Windows 2-1
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 2-2
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . 2-3
Remote Vehicle Start . . . . . . . . . 2-5
Door Locks . . . . . . . . . . . . . . . . . . . 2-7
Power Door Locks . . . . . . . . . . . . 2-8
Delayed Locking . . . . . . . . . . . . . . 2-8
Automatic Door Locks . . . . . . . . . 2-8
Lockout Protection . . . . . . . . . . . . 2-8
Safety Locks . . . . . . . . . . . . . . . . . . 2-8
Doors
Liftgate (Manual) . . . . . . . . . . . . . . 2-9
Liftgate (Power) . . . . . . . . . . . . . . 2-10
Power Assist Steps . . . . . . . . . . 2-13
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . 2-14
Anti-theft Alarm System . . . . . . 2-14
Immobilizer . . . . . . . . . . . . . . . . . . 2-15
Immobilizer Operation . . . . . . . 2-15
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . 2-17
Manual Mirrors . . . . . . . . . . . . . . . 2-17
Trailer-Tow Mirrors . . . . . . . . . . . 2-17
Power Mirrors . . . . . . . . . . . . . . . . 2-17
Folding Mirrors . . . . . . . . . . . . . . . 2-18
Heated Mirrors . . . . . . . . . . . . . . . 2-19
Automatic Dimming Mirror . . . 2-19
Park Tilt Mirrors . . . . . . . . . . . . . . 2-19
Interior Mirrors
Manual Rearview Mirror . . . . . . 2-20
Automatic Dimming Rearview Mirror . . . . . . . . . . . . . . . . . . . . . . . 2-20
Windows
Windows . . . . . . . . . . . . . . . . . . . . . 2-20
Power Windows . . . . . . . . . . . . . 2-21
Sun Visors . . . . . . . . . . . . . . . . . . . 2-22
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . 2-22
Page 51 of 518

Black plate (17,1)GMC Yukon/Yukon XL Owner Manual - 2012
Keys, Doors, and Windows 2-17
Exterior Mirrors
Convex Mirrors
{WARNING
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you
cut too sharply into the right lane,
you could hit a vehicle on the
right. Check the inside mirror or
glance over your shoulder before
changing lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from
the driver seat.
Manual Mirrors
Vehicles with outside manual
mirrors can be adjusted by moving
the mirror up and down or left to right to see a little of the side of the
vehicle, and have a clear view
behind the vehicle.
Using hood-mounted air deflectors
and add-on convex mirror
attachments could decrease mirror
performance.
Trailer-Tow Mirrors
If the vehicle has towing mirrors,
they can be adjusted for a clearer
view of the objects behind you.
Manually pull out the mirror head to
extend it for better visibility when
towing a trailer.
The lower portion of the mirror is
convex. A convex mirror's surface is
curved to see more from the driver
seat. The convex mirror can be
adjusted manually to the driver
preferred position for better vision.
The mirror may have a turn signal
arrow that flashes in the direction of
the turn or lane change.
Power Mirrors
Vehicles with outside power mirrors
have the controls on the driver door
armrest.
Page 52 of 518

Black plate (18,1)GMC Yukon/Yukon XL Owner Manual - 2012
2-18 Keys, Doors, and Windows
To adjust each mirror:
1. Press (A) or (B) to select thedriver or passenger side mirror.
2. Press the arrows on the control pad to move the mirror up,
down, right, or left.
3. Adjust each outside mirror so that a little of the vehicle and the
area behind it can be seen.
4. Press either (A) or (B) again to deselect the mirror.
The mirrors may also include a
memory function that works with the
memory seats. See Memory Seats
on page 3‑7 for more information.Folding Mirrors
Vehicles with outside power
foldaway mirrors have the controls
located on the driver door armrest.
Power Foldaway
1. Press (A) to fold the mirrors out
to the driving position.
2. Press (B) to fold the mirrors in to the folded position. Resetting the Power Foldaway
Mirrors
Reset the power foldaway mirrors if:
.The mirrors are accidentally
obstructed while folding.
.They are accidentally manually
folded/unfolded.
.The mirrors will not stay in the
unfolded position.
.The mirrors shake and flutter at
normal driving speeds.
Fold and unfold them one time
using the mirror controls to reset
them to their normal position.
Manual Foldaway
Manually fold the mirrors inward to
prevent damage when going
through an automatic car wash. To
fold, push the mirrors toward the
vehicle. Push the mirrors outward,
to return to its original position.
Page 53 of 518

Black plate (19,1)GMC Yukon/Yukon XL Owner Manual - 2012
Keys, Doors, and Windows 2-19
Turn Signal Indicator
The vehicle may have a turn signal
indicator on the mirror. An arrow on
the mirror flashes in the direction of
the turn or lane change.
Ground Illumination Lamps
The mirrors may also include
ground illumination lamps in the
base of the mirror. These lamps
help to see the area near the base
of the front doors when it is
dark out.
Heated Mirrors
For vehicles with heated mirrors:
1(Rear Window Defogger):
Press to heat the mirrors.
See “Rear Window Defogger” under
Dual Automatic Climate Control
System on page 8‑4 orClimate
Control Systems on page 8‑1 for
more information.
Side Blind Zone Alert (SBZA)
If your vehicle has the Side Blind
Zone Alert (SBZA) system, see Side
Blind Zone Alert (SBZA) on
page 9‑54.
Automatic Dimming
Mirror
Vehicles with the dimming feature
have a driver outside mirror that
adjusts for the glare of headlamps
behind you. See Manual Rearview
Mirror on page 2‑20 for more
information.
Park Tilt Mirrors
Vehicles with the memory package
have a passenger and/or driver
mirror that tilts to a preselected
position when the vehicle is in
R (Reverse). This feature lets the
driver view the curb when parallel
parking. The mirror(s) return to the
original position when the vehicle is
shifted out of R (Reverse), or the
ignition is turned off.
Turn this feature on or off through
the Driver Information Center (DIC).
See Vehicle Personalization (With
DIC Buttons) on page 5‑47 for more
information.
Page 54 of 518

Black plate (20,1)GMC Yukon/Yukon XL Owner Manual - 2012
2-20 Keys, Doors, and Windows
Interior Mirrors
Manual Rearview Mirror
Hold the mirror in the center to
move it for a clearer view of behind
your vehicle. Adjust the mirror to
avoid glare from the headlamps
behind you. Push the tab at the
bottom of the mirror forward for
daytime use and pull it for
nighttime use.
Automatic Dimming
Rearview Mirror
The vehicle may have an automatic
dimming inside rearview mirror.
Automatic dimming reduces the
glare from the headlamps of the
vehicle behind you. The dimming
feature comes on and the indicator
light illuminates each time the
ignition is turned to start.
O(On/Off):Press to turn the
dimming feature on or off. The vehicle may also have a Rear
Vision Camera (RVC). See
Rear
Vision Camera (RVC) on page 9‑57
for more information.
If the vehicle has a RVC, the
O
button for turning the dimming
feature on or off will not be
available.
Vehicles with OnStar have three
additional control buttons for the
OnStar system. See your dealer for
more information about OnStar and
how to subscribe to it. See OnStar
Overview on page 14‑1.
Cleaning the Mirror
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.
Windows
{WARNING
Leaving children, helpless adults,
or pets in a vehicle with the
windows closed is dangerous.
They can be overcome by the
extreme heat and suffer
permanent injuries or even death
from heat stroke. Never leave a
child, a helpless adult, or a pet
alone in a vehicle, especially with
the windows closed in warm or
hot weather.
Page 56 of 518
Black plate (22,1)GMC Yukon/Yukon XL Owner Manual - 2012
2-22 Keys, Doors, and Windows
Express Down Windows
Windows that have the express‐
down feature allow the windows to
be lowered without holding the
switch. Press the window switch
fully and release it to activate the
express‐down feature. The express
mode can be canceled at any time
by briefly pressing, or pulling the
switch.
Window Lockout
o(Window Lockout):The
window lockout switch is on the
driver door. This feature prevents
the rear passenger windows from
operating, except from the driver
position. Press the switch to turn the
lockout feature on or off. An
indicator light shows the feature
is on.
Sun Visors
Pull the sun visor down to block
glare. Detach the sun visor from the
center mount to pivot to the side
window, or to extend along the rod,
if available.
Roof
Sunroof
A. Open or Close Sunroof
B. Vent
On vehicles with a sunroof, there
are two sunroof switches on the
overhead console above the
rearview mirror.
Page 65 of 518

Black plate (7,1)GMC Yukon/Yukon XL Owner Manual - 2012
Seats and Restraints 3-7
Power Reclining Seatbacks
To recline a power seatback,
if equipped:
.Tilt the top of the control
rearward to recline.
.Tilt the top of the control forward
to raise.
Memory Seats
On vehicles with the memory
feature, the controls on the driver
door are used to program and recall
memory settings for the driver seat,
outside mirrors, and the adjustable
throttle and brake pedals,
if equipped.Storing Memory Positions
To save into memory:
1. Adjust the driver seat, seatback
recliner, both outside mirrors,
and the throttle and brake
pedals, if equipped.
See Power Mirrors on page 2‑17
and Adjustable Throttle and
Brake Pedal on page 9‑22 for
more information.
Not all mirrors and adjustable
throttle and brake pedals will
have the ability to save and
recall their positions.
2. Press and hold “1”until
two beeps sound.
3. Repeat for a second driver position using “2.”
To recall, press and release “1”or
“2.” The vehicle must be in P (Park).
A single beep will sound. The seat,
outside mirrors, and adjustable
throttle and brake pedals will move
to the position previously stored for
the identified driver.