2020 GMC SIERRA DENALI horn

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Introduction 7
16. Trailer Brake Control Panel (IfEquipped). See “Integrated
Trailer Brake Control System”
under Towing Equipment
0 296.
17. ENGINE START/STOP. See Ignition Positions (Keyless
Access) 0208 or
Ignition Positions (Key Access)
0 210.
18. Steering Wheel Controls (If Equipped). See the
infotainment manual.
Driver Information Center (DIC)
Controls. See Driver
Information Center (DIC) (Base
Level) 0147 or
Driver Information Center (DIC)
(Midlevel and Uplevel) 0148.
19. Horn 0119.
20. Hood Release. See Hood
0 330.
21. Steering Wheel Adjustment
0118 (Out of View). 22.
Cruise Control 0243.
Adaptive Cruise Control (1500
Series) 0245 (If Equipped).
Forward Collision Alert (FCA)
System 0268 (If Equipped).
Heated Steering Wheel 0119
(If Equipped).
23. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0137.
24. Electric Parking Brake 0233.
25. Fog Lamps 0170 (If
Equipped).
Instrument Panel Illumination
Control 0172.
Exterior Cargo Lamps 0171.
Exterior Lamp Controls 0165.
Task Lighting 0171 (If
Equipped).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
14 Keys, Doors, and Windows
least four seconds. The engine may
be started from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start025.
Q:Press to lock all doors.
If enabled, the turn signal lamps
may flash and/or the horn may
sound on the second press to
indicate locking has occurred.
If enabled, the horn chirps when
Q
is pressed again within
three seconds. See Vehicle
Personalization 0156.
Pressing
Qarms the alarm system.
See Vehicle Alarm System 036.
If equipped with remote mirror
folding, pressing and holding
Qfor
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0156.
K: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, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See
Vehicle
Personalization 0156.
Pressing
Kon the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 036.
If equipped with remote mirror
folding, pressing and holding
Kfor
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0156.
Press and hold
Kto remotely open
the windows, if enabled. See
Vehicle Personalization 0156.
x:Press twice quickly to release
the tailgate, if equipped.
7: Press and release to initiate the
vehicle locator. The turn signal
lamps flash and the horn sounds
three times. Press and hold
7for more than
three 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 turned on or
7
is pressed again. The ignition must
be 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.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 17
/:Press and releaseQ, then
immediately press and hold
/until
the turn signal lamps flash or for at
least four seconds. The engine may
be started from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start 025.
Q:Press to lock all doors and the
tailgate, if equipped.
If enabled, the turn signal lamps
flash and/or the horn may sound on
the second press to indicate locking
has occurred. If enabled, the horn chirps when
Qis pressed again
within three seconds. See Vehicle
Personalization 0156.
If the driver door is open when
Qis
pressed, all doors will lock and then
the driver door will immediately
unlock, if enabled. See Vehicle
Personalization 0156.
If the passenger door is open when
Qis pressed, all doors lock.
Pressing
Qarms the alarm system.
See Vehicle Alarm System 036.
If equipped with remote mirror
folding, pressing and holding
Qfor
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0156.
K:Press once to unlock only the
driver door. If
Kis pressed again
within three seconds, all remaining
doors and the tailgate unlock. The interior lamps may come on and
stay on for 20 seconds or until the
ignition is turned on.
If enabled, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See
Vehicle
Personalization 0156.
Pressing
Kon the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 036.
If equipped with remote mirror
folding, pressing and holding
Kfor
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0156.
Press and hold
Kuntil the windows
fully open, if remote window
operation is enabled. See Vehicle
Personalization 0156.
x:Press twice quickly to release
the tailgate, if equipped.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
18 Keys, Doors, and Windows
7:Press and release to initiate
vehicle locator. The turn signal
lamps flash and the horn sounds
three times.
Press and hold
7for more than
three 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 turned on or
7
is pressed again. The ignition must
be off for the panic alarm to work.
Keyless Access Operation
The Keyless Access system allows
for doors and the tailgate to be
accessed without pressing the RKE
transmitter button. The RKE
transmitter must be within 1 m (3 ft)
of the tailgate or door being opened.
If the vehicle has this feature, there
will be a button on the outside door
handles. Keyless Access can be
programmed to unlock all doors on
the first lock/unlock press from the
driver door. Keyless Unlocking can
also be turned off. See
Vehicle
Personalization 0156.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 058.
Keyless Unlocking/Locking from
the Driver Door
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the door handle, pressing the
lock/unlock button on the driver door
handle will unlock the driver door.
If the lock/unlock button is pressed
again within five seconds, all
passenger doors and the tailgate
will unlock.
Driver Side Shown, Passenger Side Similar
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
. It has been more than
five seconds since the first lock/
unlock button press.
. Two lock/unlock button presses
were used to unlock all doors.
. Any vehicle door has been
opened and all doors are now
closed.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
Keys, Doors, and Windows 19
Keyless Unlocking/Locking from
the Passenger Doors
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the door handle, pressing the
lock/unlock button on a passenger
door handle will unlock all doors.
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
.The lock/unlock button was used
to unlock all doors.
. Any vehicle door has been
opened and all doors are now
closed.
Disable/Enable Keyless Unlocking
of Exterior Door Handles and
Tailgate
If equipped, keyless unlocking of the
exterior door handles and tailgate
can be disabled and enabled.
Disabling Keyless Unlocking:
With the vehicle off, press and
hold
QandKon the RKE
transmitter at the same time for
approximately three seconds. The
turn signal lamps will flash four times quickly to indicate access is
disabled. Using any exterior handle
to unlock the doors or open the
tailgate will cause the turn signal
lamps to flash four times quickly,
indicating access is disabled.
If disabled, disarm the alarm system
before starting the vehicle.
Enabling Keyless Unlocking:
With the vehicle off, press and
hold
QandKon the RKE
transmitter at the same time for
approximately three seconds. The
turn signal lamps will flash twice
quickly to indicate access is
enabled.
Passive Locking
This feature will lock the vehicle
several seconds after all doors are
closed, if the vehicle is off and at
least one RKE transmitter has been
removed from the interior, or none
remain in the interior.
If other electronic devices interfere
with the RKE transmitter signal, the
vehicle may not detect the RKE
transmitter inside the vehicle. If passive locking is enabled, the
doors may lock with the RKE
transmitter inside the vehicle. Do
not leave the RKE transmitter in an
unattended vehicle.
To customize the doors to
automatically lock when exiting the
vehicle, see
“Remote Lock, Unlock,
Start” under Vehicle Personalization
0 156.
Temporary Disable of Passive
Locking
Temporarily disable passive locking
by pressing and holding
Kon the
interior door switch with a door open
for at least four seconds, or until
three chimes are heard. Passive
locking will then remain disabled
until
Qon the interior door is
pressed, or until the vehicle is
turned on.
Remote Left in Vehicle Alert
When the vehicle is turned off and
an RKE transmitter is left in the
vehicle, the horn will chirp three

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
20 Keys, Doors, and Windows
times after all doors are closed. To
turn on or off seeVehicle
Personalization 0156.
Remote No Longer in Vehicle Alert
If the vehicle is on with a door open
and then all doors are closed, the
vehicle will check for RKE
transmitters inside. If an RKE
transmitter is not detected, the
Driver Information Center (DIC) will
display NO REMOTE DETECTED
and the horn will chirp three times.
This occurs only once each time the
vehicle is driven. To turn on or off
see Vehicle Personalization 0156.
Key Access
To access a vehicle with a dead
transmitter battery, see Door Locks
0 26.
Programming Transmitters to
the Vehicle
Only RKE transmitters programmed
to the vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
The vehicle can be reprogrammed so that lost or stolen transmitters no
longer work. Each vehicle can have
up to eight transmitters matched
to it.
Programming with Recognized
Transmitters
A new transmitter can be
programmed to the vehicle when
there are two recognized
transmitters.
To program, the vehicle must be off
and all transmitters, both currently
recognized and new, must be
with you.
1. Remove the key from a recognized transmitter.
2. Place the two recognized transmitters in the cupholder or
on the passenger seat.
3. Insert the vehicle key into the key lock cylinder on the driver
door handle. Then turn the key
counterclockwise, to the unlock
position, five times within
10 seconds.
The DIC displays READY FOR
REMOTE#3, 4, 5 ETC.
Transmitter Pocket without Bucket
Seats (Lower Compartment)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
28 Keys, Doors, and Windows
removed from the brake or the
vehicle speed becomes faster than
13 km/h (8 mph).
To unlock the doors:
.Press
Kon the power door lock
switch.
. Shift the transmission into
P (Park).
Automatic door locking cannot be
disabled. Automatic door unlocking
can be programmed. See Vehicle
Personalization 0156.
Lockout Protection
If equipped, the ignition is on or in
ACC/ACCESSORY and the power
door lock switch is pressed with the
driver door open, all the doors will
lock and only the driver door will
unlock.
If the vehicle is off and locking is
requested while a door is open,
when all doors are closed the
vehicle will check to the Keyless
Access function (if equipped). If an
RKE transmitter is detected and the
number of RKE transmitters inside has not reduced, the driver door will
unlock and the horn will chirp three
times.
Lockout Protection can be manually
overridden with the driver door open
by pressing and holding
Qon the
power door lock switch.
Open Door Anti-Lockout
If equipped, the Open Door
Anti-Lockout is turned on and the
vehicle is off, the driver door is
open, and locking is requested, all
the doors will lock and the driver
door will unlock. The Open Door
Anti-Lockout feature can be turned
on or off. See Vehicle
Personalization 0156.
Safety Locks
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
The safety lock is on the inside
edge of the rear doors. To use the
safety lock:
1. Move the lever down to the lock position.
2. Close the door.
3. Do the same for the other rear door.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13337776) - 2020 - CRC - 8/27/19
36 Keys, Doors, and Windows
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system.
Off :Alarm system is disarmed.
On Solid : Vehicle is secured
during the delay to arm the system. Fast Flash :
Vehicle is unsecured.
A door or the hood is open.
Slow Flash : Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of two ways:
.Use the RKE transmitter.
. With a door open, press
Q
on the interior of the door.
3. After 30 seconds, the alarm system will arm and the
indicator light will begin to
slowly flash. Pressing
Qon the
RKE transmitter a second time
will bypass the 30-second
delay and immediately arm the
alarm system.
The vehicle alarm system will not
arm if the doors are locked with
the key.
If the driver door is opened without
first unlocking with the RKE
transmitter, the horn will chirp and the lights will flash to indicate
pre-alarm. If the vehicle is not
started, or the door is not unlocked
by pressing
Kon the RKE
transmitter during the 10-second
pre-alarm, the alarm will be
activated.
The alarm will also be activated if a
passenger door or the hood is
opened without first disarming the
system. When the alarm is
activated, the turn signals flash and
the horn sounds for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
. Press
Kon the RKE transmitter.
. Start the vehicle.
To avoid setting off the alarm by
mistake:
. Lock the vehicle after all
occupants have exited.