2015 GMC SIERRA DENALI ignition

Black plate (3,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
Keys, Doors, and Windows 2-3The key is used for the ignition and
all door locks.
Programming Keys Follow these procedures to program
up to eight keys to the vehicle.
Programming with a
Recognized Key
To program a new key:
1. Insert the original, already
programmed key in the ignition
and turn the key to the ON/RUN
position.
2. Turn the key to LOCK/OFF, and
remove the key.
3. Insert the new key to be
programmed and turn it to the
ON/RUN position within
five seconds.
The security light will turn off
once the key has been
programmed.
4. Repeat Steps 1 – 3 if additional
keys are to be programmed. If a key is lost or damaged, see your
dealer to have a new key made.
Programming without a
Recognized Key
Program a new key to the vehicle
when a recognized key is not
available. Canadian regulations
require that owners see their dealer.
If there are no currently recognized
keys available, follow this procedure
to program the first key.
This procedure will take
approximately 30 minutes to
complete for the first key. The
vehicle must be off and all of the
keys you wish to program must be
with you.
1. Insert the new vehicle key into
the ignition.
2. Turn to ON/RUN. The security
light will come on.
3. Wait 10 minutes until the
security light turns off.
4. Turn the ignition to LOCK/OFF. 5. Repeat Steps 2 – 4 two more
times. After the third time, turn to
ON/RUN; the key is learned and
all previously known keys will no
longer work with the vehicle.
Remaining keys can be learned by
following the procedure in
“ Programming with a
Recognized Key. ”
The key has a bar-coded key tag
that the dealer or qualified locksmith
can use to make new keys. Store
this information in a safe place, not
in the vehicle.
See your dealer if a replacement
key or additional key is needed.
If it becomes difficult to turn a key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
With an active OnStar subscription,
an OnStar Advisor may remotely
unlock the vehicle. See OnStar
Overview on page 14-1 .

Black plate (5,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
Keys, Doors, and Windows 2-5when
Q is pressed again within
three seconds. See Vehicle
Personalization on page 5-42 .
Pressing
Q arms the alarm system.
See Vehicle Alarm System on
page 2-11 .
If equipped with auto mirror folding,
pressing and holding
Q for
one second will fold the mirrors. The
auto mirror folding feature will not
operate unless it is enabled. See
Vehicle Personalization on
page 5-42 .
K (Unlock): Press once to unlock
only the driver door. If
K is 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 Vehicle
Personalization on page 5-42 .
If enabled through the DIC, the exterior lamps may turn on. See
Vehicle Personalization on
page 5-42 .
If equipped, memory seat positions
may be recalled when unlocking the
vehicle if enabled. See Vehicle
Personalization on page 5-42 and
Memory Seats on page 3-5 .
Pressing
K on the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System on page 2-11 .
If equipped with auto mirror folding,
pressing and holding
K for
one second will unfold the mirrors.
The auto mirror folding feature will
not operate unless it is enabled.
See Vehicle Personalization on
page 5-42 .
On some models, press, release
and then press and hold
K to open
all of the windows. Pressing the
button again will stop the windows. 7 (Vehicle Locator/Panic
Alarm): Press and release one
time to initiate vehicle locator. The
turn signal lamps flash and the horn
sounds three times.
Press and hold
7 for at least
three seconds to sound 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
7 is pressed again. The
ignition must be in LOCK/OFF for
the panic alarm to work.
Programming Transmitters to
the Vehicle Only RKE transmitters programmed
to this vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
Each vehicle can have up to
eight transmitters programmed to it.
See your dealer for transmitter
programming.

Black plate (7,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
Keys, Doors, and Windows 2-7
Remote Vehicle Start If equipped with the remote start
feature, the climate control system
will come on when the vehicle is
started remotely, depending on the
outside temperature.
The rear defog and heated and
cooled seats, if equipped, may also
come on. See Heated and Cooled
Front Seats on page 3-7 and
Vehicle Personalization on
page 5-42 .
Laws in some communities may
restrict the use of remote starters.
Check local regulations for any
requirements on remote starting of
vehicles.
Do not use remote start if the
vehicle is low on fuel.
The vehicle cannot be remote
started if: .
The key is in the ignition. .
The hood is not closed. .
There is an emission control
system malfunction and the
malfunction indicator lamp is on.
The engine will turn off during a
remote vehicle start if: .
The coolant temperature gets
too high. .
The oil pressure gets low.
The RKE transmitter range may be
reduced while the vehicle is running.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System on page 2-4 or Vehicle
Personalization on page 5-42 .
Starting the Engine Using Remote
Start
1. Press and release
Q . 2. Immediately press and hold
/ until the turn signal lamps flash
or for at least four seconds.
When the vehicle starts, the
parking lamps will turn on. The
doors will be locked and the
climate control system may
come on.
The engine will continue to run
for 10 minutes. Repeat the
Steps for 1 and 2 for a
10-minute time extension.
Place the ignition in ON/RUN/
START to operate the vehicle.
Extending Engine Run Time
The engine run time can be
extended by 10 minutes, for a total
of 20 minutes, if during the first
10 minutes Steps 1 and 2 are
repeated while the engine is still
running.
A maximum of two remote starts,
or a single start with an extension,
is allowed between ignition cycles.

Black plate (8,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
2-8 Keys, Doors, and Windows The vehicle's ignition must be
turned on and then back off to use
remote start again.
Canceling a Remote Start
To cancel a remote start, do one of
the following: .
Press and hold
/ until the
parking lamps turn off. .
Turn on the hazard warning
flashers. .
Turn the ignition on and then off.
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
(Continued) Warning (Continued) 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. .
Outsiders can easily enter
through an unlocked door
when you slow down or stop
the vehicle. Locking the doors
can help prevent this from
happening. There are several ways to lock and
unlock the vehicle.
From outside, use the Remote
Keyless Entry (RKE) transmitter or
the key in the driver door.
From inside, use the power door
locks. See Power Door Locks on
page 2-9 .
From inside, pull the door handle
once to unlock the door. Pull the
handle again to open the door.
See Vehicle Alarm System on
page 2-11 .

Black plate (9,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
Keys, Doors, and Windows 2-9
Power Door Locks
Crew/Double Cab Premium Trim
Shown, Other Models Similar
Q : Press to lock the doors.
K : Press to unlock the doors. Delayed Locking If equipped, when locking the doors
with the power lock switch and a
door open, the doors will lock
five seconds after the last door is
closed. Three chimes signal that
delayed locking is in use.
Pressing the power lock switch
twice overrides the delayed locking
feature and immediately locks all
doors.
This feature will not operate if the
key is in the ignition.
Turn delayed locking on or off using
vehicle personalization. See Vehicle
Personalization on page 5-42 .Automatic Door Locks The doors will lock automatically
when all doors are closed, the
ignition is on, and the shift lever is
moved out of P (Park).
To unlock the doors: .
Press
K on a door. .
Shift the transmission into
P (Park).
Lockout Protection When locking is requested with the
driver door open and the key in the
ignition, all the doors will lock and
then the driver door will unlock.
This can be manually overridden by
pressing and holding
Q on the
power door lock switch.
Safety Locks The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.

Black plate (13,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
Keys, Doors, and Windows 2-13
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 on page 10-41 . 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
on page 2-1 . To program additional
transmitters, see Remote Keyless
Entry (RKE) System Operation on
page 2-4 .
Do not leave the key or device that
disarms or deactivates the vehicle
theft system in the vehicle.
See your dealer to get a new key
blank cut exactly as the ignition key
that operates the system.

Black plate (16,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
2-16 Keys, Doors, and Windows
Folding Mirrors
Crew/Double Cab Premium
Shown, Other Models Similar
Power Folding If equipped with power folding
mirrors:
1. Press (2) to fold the mirrors out
to the driving position.
2. Press (2) again to fold the
mirrors in to the folded position. The mirrors may also include a
memory function that works with the
memory seats. See Memory Seats
on page 3-5 .
Resetting the Power Folding
Mirrors
Reset the power folding 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 vibrate at normal
driving speeds.
Fold and unfold the mirrors three
times using the mirror controls to
reset them to their normal position.
A popping noise may be heard. This
sound is normal after a manual
folding operation. Manual Folding If equipped, push the mirror toward
the vehicle to fold. Push the mirror
outward to return to its original
position.
Manually fold the mirrors inward to
prevent damage when going
through an automatic car wash.
Auto Mirror Folding If equipped, with the ignition off,
press and hold
Q on the RKE
transmitter for approximately
one second to automatically fold the
exterior mirrors. Press and hold
Kon the RKE transmitter for
approximately one second to unfold.
See Remote Keyless Entry (RKE)
System Operation on page 2-4 .
This feature is turned on or off
through vehicle personalization. See
Vehicle Personalization on
page 5-42 .

Black plate (18,1)GMC 2015i Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-8431500) - 2015 - CRC - 6/20/14
2-18 Keys, Doors, and Windows 1. When the approaching vehicle is
a long distance away, the image
in the main mirror is small and
near the inboard edge of the
mirror.
2. As the vehicle gets closer, the
image in the main mirror gets
larger and moves outboard.
3. As the vehicle enters the blind
zone, the image transitions from
the main mirror to the blind spot
mirror.
4. When the vehicle is in the blind
zone, the image only appears in
the blind spot mirror. Using the Outside Mirror with
the Blind Spot Mirror 1. Set the main mirror so that the
side of the vehicle can just be
seen and the blind spot mirror
has an unobstructed view.
2. When checking for traffic or
before changing a lane, look at
the main driver/passenger side
mirror to observe traffic in the
adjacent lane, behind your
vehicle. Check the blind spot
mirror for a vehicle in the blind
zone. Then, glance over your
shoulder to double check before
moving slowly into the
adjacent lane. Reverse Tilt Mirrors If equipped with memory seats, the
passenger and/or driver mirror tilts
to a preselected position when the
vehicle is in R (Reverse). This
allows the curb to be seen when
parallel parking.
The mirror(s) return to the original
position when: .
The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about
30 seconds. .
The ignition is turned off. .
The vehicle is driven in
R (Reverse) above a set speed.
To turn this feature on or off, see
Vehicle Personalization on
page 5-42 .