
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
40 Keys, Doors, and Windows
Inclination and Intrusion
Sensors Disable Switch
It is recommended that the intrusion
and inclination sensors be
deactivated if pets are left in the
vehicle or if the vehicle is being
transported.
With the vehicle turned off,
press
oin the front overhead
console. The indicator light will
come on momentarily, indicating
that these sensors have been
disabled for the next alarm system
arming cycle.
Immobilizer
See Radio Frequency
Statement 0467.
Immobilizer Operation
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the vehicle is
turned off.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.
The security light, in the instrument
cluster, comes on if there is a
problem with arming or disarming
the theft-deterrent system. When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. It may be
necessary to check the fuse. See
Fuses
0376. If the engine still does
not start with the other key, the
vehicle needs service. If the vehicle
does start, the first key may be
faulty. See your dealer.
It is possible for the immobilizer
system to learn new or replacement
keys. Up to eight keys can be
programmed for the vehicle. To
program additional keys, see Keys
0 28. To program additional
transmitters, see Remote Keyless
Entry (RKE) System Operation 031.
Do not leave the key or device that
disarms or deactivates the vehicle
theft system in the vehicle.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
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46 Keys, Doors, and Windows
Windows
{Warning
Never leave a child, a helpless
adult, or a pet alone in a vehicle,
especially with the windows
closed in warm or hot weather.
They can be overcome by the
extreme heat and suffer
permanent injuries or even death
from heat stroke.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in apulsing sound when either rear
window is down and the front
windows are up. To reduce the
sound, open either a front window
or the sunroof, if equipped.
Manual Windows
If equipped, turn the hand crank on
each door to manually raise or lower
the manual windows.
Power Windows
{Warning
Children could be seriously
injured or killed if caught in the
path of a closing window. Never
leave keys in a vehicle with
children. When there are children
in the rear seat, use the window
lockout button to prevent
operation of the windows. See
Keys
028.
Crew/Double Cab Premium Trim
Shown, Other Models Similar
The windows work when the vehicle
is in ON/RUN, ACC/ACCESSORY,
or Retained Accessory Power
(RAP). See Retained Accessory
Power (RAP) 0262.
Press or pull the switch to open or
close the window.
The windows will be temporarily
disabled if the window switches are
used repeatedly within a short time.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Keys, Doors, and Windows 47
Window Lockout
Crew/Double Cab Premium
Shown, Other Models Similar
This feature stops the rear door
passenger window switches from
working except from the driver
position.
Press
Zto engage the rear
window lockout feature. The
indicator light is on when engaged.
Press
Zagain to disengage.
Window Express Movement
Express-down/up allows the
windows to be opened or closed
without holding the window switch. Press the window switch fully down
or pull it up, and quickly release it to
engage. Briefly press or pull the
same switch to stop window
movement.
Express Window Obstacle
Detection
The express-up feature will reverse
window movement if it comes in
contact with an object. Extreme cold
or ice could cause the window to
auto-reverse. The window will
operate as normal after the object or
condition is removed.
Obstacle Detection Override
{Warning
If obstacle detection override is
activated, the window will not
reverse automatically. You or
others could be injured and the
window could be damaged.
Before you use obstacle detection
override, make sure that all
people and obstructions are clear
of the window path.
The window can be closed by
holding the window switch in the up
position if conditions prevent it from
express closing.
Programming the Power
Windows
Programming may be necessary if
the vehicle's battery has been
disconnected or discharged. If the
window is unable to express-up,
program the window:
1. Close all doors.
2. Place the ignition in ACC/ ACCESSORY or ON/RUN.
3. Partially open the window to be programmed, then close it and
continue to pull the switch
briefly after the window has
fully closed.
4. Press the power window switch until the window is fully open
and briefly hold.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
48 Keys, Doors, and Windows
Rear Windows
Power Sliding Rear Window
If equipped, the power sliding rear
window works when the ignition has
been turned to ACC/ACCESSORY
or ON/RUN, or when Retained
Accessory Power (RAP) is active.
SeeRetained Accessory Power
(RAP) 0262.
. Press the switch to open the
window.
. Pull the switch to close the
window.
The power sliding rear window
cannot be operated manually.
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, if equipped, extend
along the rod.
Roof
Sunroof
If equipped, the sunroof operates
when the ignition is on or in ACC/
ACCESSORY, or when Retained
Accessory Power (RAP) is active.
See Retained Accessory Power
(RAP) 0262.
Slide Switch
Express-Open/Express-Close : To
express-open the sunroof, fully
press and release
I. Press the
switch again to stop the movement.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
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Keys, Doors, and Windows 49
To express-close the sunroof, fully
press and release
K. Press the
switch again to stop the movement.
Open/Close (Manual Mode) : To
open the sunroof, press and
hold
I. Release the switch to stop
the movement. Press and hold
K
to close the sunroof. Release the
switch to stop the movement.
Tilt Switch
Vent : From the closed position,
press
Jto vent the sunroof. Press
Kto close the vent.
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.
Automatic Reversal System
The sunroof is equipped with an
automatic reversal system that is
only active when the sunroof is
being operated in express-close. If an object is in the path of the
sunroof while it is express closing,
the reversal system will detect the
object and stop. In the event of
closing difficulties like frost or other
conditions, it is possible to override
the reversal system. To override the
reversal system, close in manual
mode. To stop the movement,
release the switch.
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
tracks.
If water is seen dripping into the
water drainage system, this is
normal.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Seats and Restraints 51
Head Restraints
Front Seats
The vehicle’s front seats have
adjustable head restraints in the
outboard seating positions.
{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.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 restraint
down. Try to move the head
restraint after the button is released
to make sure that it is locked in
place.
The head restraints adjust forward
and rearward. To adjust the head
restraint forward, grasp the head
restraint and pull forward to the
desired locking position. To adjust

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Seats and Restraints 55
Easy Exit Recall
If programmed on in the vehicle
personalization menu, the easy exit
feature automatically recalls the
previously stored
B(Exit) position.
See “Storing Memory Positions”
listed previously. See also Vehicle
Personalization 0155.
Easy exit recall automatically
activates when one of the following
occurs:
. The vehicle is turned off and the
driver door is opened within a
short time.
. The vehicle is turned off with the
driver door open.
To stop recall movement, press one
of the memory, power mirror or
power seat controls; or press the
adjustable pedal control (if
equipped).
Obstructions
If something has blocked the driver
seat and/or adjustable pedals while
recalling a memory position, the recall may stop. Remove the
obstruction. Then do one of the
following:
.
For manual or automatic recall
positions, press and hold the
appropriate manual control for
two seconds. Try recalling again
by pressing the appropriate
memory button.
. For exit recall position, press
and hold the appropriate manual
control for the exit feature not
recalling for two seconds. Then
try recalling the exit position
again.
If the memory position is still not
recalling, see your dealer for
service.
Heated and Ventilated
Front Seats
{Warning
If you cannot feel temperature
change or pain to the skin, the
seat heater may cause burns. To (Continued)
Warning (Continued)
reduce the risk of burns, people
with such a condition should use
care when using the seat heater,
especially for long periods of
time. Do not place anything on
the seat that insulates against
heat, such as a blanket, cushion,
cover, or similar item. This may
cause the seat heater to
overheat. An overheated seat
heater may cause a burn or may
damage the seat.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
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Seats and Restraints 57
Rear Seats
Rear Seats (Double Cab
Full Bench)
Rear Seat Reminder (Full
Bench Only)
Look in Rear Seat Reminder
Feature
If equipped, this message displays
under certain conditions indicating
there may be an item or passenger
in the rear seat. Check before
exiting the vehicle.
This feature will activate when a
second row door is opened while
the vehicle is on or up to 10 minutes
before the vehicle is turned on,
including if the vehicle was started
remotely. There will be an alert
when the vehicle is turned off. The
alert does not directly detect objects
in the rear seat; instead, under
certain conditions, it detects when a
rear door is opened and closed,
indicating that there may be
something in the rear seat.The feature is active only once each
time the vehicle is turned on and off,
and will require reactivation by
opening and closing the second row
doors. There may be an alert even
when there is nothing in the rear
seat; for example, if a child entered
the vehicle through the rear door
and left the vehicle without the
vehicle being shut off.
The feature can be turned on or off
through
Vehicle
Personalization 0155.
Folding the Rear Seat
Caution
Folding a rear seat with the safety
belts still fastened may cause
damage to the seat or the safety
belts. Always unbuckle the safety
belts and return them to their
normal stowed position before
folding a rear seat.
To fold the seat:1. Pull up on the front of the seat cushion while pulling down on
the release strap loop under
the seat cushion.
2. Pull the seat cushion up until it latches with the seatback.
3. Pull forward on the seat cushion to make sure it is
locked in place.
To unfold the seat: 1. Push the seat cushion rearward while pulling the
release strap loop under the
seat cushion. Pull the seat
cushion down until it latches.