2020 GMC YUKON alarm

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Keys, Doors, and Windows 9
Keys, Doors, and
Windows
Keys and Locks
Keys (Keyless Access) . . . . . . . . . . 9
Keys (Key Access) . . . . . . . . . . . . 10
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE) System Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . . . 13
Remote Keyless Entry (RKE) System Operation (Keyless
Access) . . . . . . . . . . . . . . . . . . . . . . 16
Remote Vehicle Start . . . . . . . . . . 23
Door Locks . . . . . . . . . . . . . . . . . . . . 24
Power Door Locks . . . . . . . . . . . . . 25
Delayed Locking . . . . . . . . . . . . . . . 25
Automatic Door Locks . . . . . . . . . 25
Lockout Protection . . . . . . . . . . . . . 26
Safety Locks . . . . . . . . . . . . . . . . . . . 26
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 27
Power Assist Steps . . . . . . . . . . . . 32
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 33
Vehicle Alarm System . . . . . . . . . 33 Steering Column Lock . . . . . . . . . 35
Immobilizer . . . . . . . . . . . . . . . . . . . . 36
Immobilizer Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . . . 36
Immobilizer Operation (Keyless
Access) . . . . . . . . . . . . . . . . . . . . . . 36
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 37
Power Mirrors . . . . . . . . . . . . . . . . . . 38
Folding Mirrors . . . . . . . . . . . . . . . . . 38
Heated Mirrors . . . . . . . . . . . . . . . . . 39
Automatic Dimming Mirror . . . . . 39
Blind Spot Mirrors . . . . . . . . . . . . . . 39
Reverse Tilt Mirrors . . . . . . . . . . . . 40
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 41
Manual Rearview Mirror . . . . . . . . 41
Automatic Dimming RearviewMirror . . . . . . . . . . . . . . . . . . . . . . . . . 41
Child-View Mirror . . . . . . . . . . . . . . 41
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 41
Power Windows . . . . . . . . . . . . . . . 42
Sun Visors . . . . . . . . . . . . . . . . . . . . . 43
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 44
Keys and Locks
Keys (Keyless Access)
{Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or with the RKE
transmitter in the vehicle, and
children or others could be caught
in the path of a closing window.
Do not leave children in a vehicle
with the ignition key or an RKE
transmitter.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
14 Keys, Doors, and Windows
/: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 023.
Q:Press to lock all doors.
If enabled, the turn signal lamps
flash once to indicate locking has
occurred. If enabled, the horn chirps when
Qis pressed again within
three seconds. See Vehicle
Personalization 0152.
Pressing
Qarms the alarm system.
See Vehicle Alarm System 033.
If equipped with auto mirror folding,
pressing and holding
Qfor
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0152.
K:Press once to unlock 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 0152.
Pressing
Kon the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 033. If equipped with auto mirror folding,
pressing and holding
Kfor
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0152.
Press and hold
Kuntil the windows
fully open, if remote window
operation is enabled. See Vehicle
Personalization 0152.
b:Press twice to open or close
the liftgate. Press once to stop the
liftgate from moving.
c: Press twice to open the
liftglass.
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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Keys, Doors, and Windows 15
when the ignition is turned on or7
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.
Battery Replacement
Replace the battery in the
transmitter soon if the Driver
Information Center displays
REPLACE BATTERY IN
REMOTE KEY.
Caution
When replacing the battery, do
not touch any of the circuitry on
the transmitter. Static from your
body could damage the
transmitter.
To replace the battery:
1. Separate and remove the back cover of the transmitter with a
flat, thin object, such as a coin.
2. Press and slide the batterydown toward the pocket of the
transmitter in the direction of
the key ring. Do not use a
metal object
3. Remove the battery.
4. Insert the new battery, positive side facing up. Replace with a
CR2032 or equivalent battery.
5. Push together the transmitter back cover top side first, and
then the bottom toward the
key ring.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
16 Keys, Doors, and Windows
Remote Keyless Entry
(RKE) System Operation
(Keyless Access)
The Keyless Access system allows
for vehicle entry when the Remote
Keyless Entry (RKE) transmitter is
within 1 m (3 ft). See“Keyless
Access Operation” later in this
section.
The RKE transmitter functions may
work up to 60 m (197 ft) away from
the vehicle.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 013.
Q:Press to lock all doors.
If enabled, the turn signal lamps
flash once 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 0152.
If the driver door is open when
Qis
pressed and Unlocked Door
Anti-Lockout is enabled, all doors
will lock and then the driver door will immediately unlock. See
Vehicle
Personalization 0152. If the
passenger door is open when
Qis
pressed, all doors lock.
Pressing
Qarms the alarm system.
See Vehicle Alarm System 033.
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 0152.
Pressing
Kon the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 033.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Keys, Doors, and Windows 17
Press and holdKuntil the windows
fully open, if remote window
operation is enabled. See Vehicle
Personalization 0152.
b:Press twice to open or close
the liftgate. Press once to stop the
liftgate from moving.
c: Press twice to open the
liftglass.
7: Press and release to initiate
vehicle locate. 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.
/: 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
023.
Keyless Access Operation
The Keyless Access system allows
for doors and the liftgate to be
accessed without pressing the RKE
transmitter button. The RKE
transmitter must be within 1 m (3 ft)
of the liftgate 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 access can
also be turned off. See Vehicle
Personalization 0152.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 051. 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 liftgate will
unlock.
Driver Side Shown, Passenger
Side Similar

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
18 Keys, Doors, and Windows
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.
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
Liftgate
If equipped, keyless unlocking of the
exterior door handles and liftgate
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 liftgate 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. Enabling
and disabling may also be configured from the personalization
menu. See
“Passive Door Unlock”
under Vehicle Personalization
0 152.
Passive Locking
If equipped with Keyless Access,
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
0 152.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
Keys, Doors, and Windows 33
Enable/Disable
Press and hold
jfor four seconds
to lock and disable the power assist
steps. Press and hold
jfor
four seconds again to enable them.
The DIC will display a message.
Auto Power Assist Steps
This allows the feature to be turned
on or off. See Vehicle
Personalization 0152. Select Off,
On, or Extended.
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, liftgate, 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 three ways:
.Use the RKE transmitter.
. Use the Keyless Access
system.
. 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

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13566587) - 2020 - CRC - 4/15/19
34 Keys, Doors, and Windows
by pressingKon the RKE
transmitter during the 10-second
pre-alarm, the alarm will be
activated.
The alarm will also be activated if a
passenger door, the liftgate, 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.
. Unlock the vehicle using the
Keyless Access system.
. Start the vehicle.
To avoid setting off the alarm by
accident:
. Lock the vehicle after all
occupants have exited. .
Always unlock a door with the
RKE transmitter, or use the
Keyless Access system.
Unlocking the driver door with
the key will not disarm the
system or turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the RKE
transmitter and the horn chirps three
times, an alarm occurred previously
while the alarm system was armed.
If the alarm has been activated, a
message will appear on the DIC.
Power Sounder, Inclination
Sensor, and Intrusion Sensor
In addition to the standard
theft-deterrent system features, this
system may also have a power
sounder, inclination sensor, and
intrusion sensor.
The power sounder provides an
audible alarm which is distinct from
the vehicle’ s horn. It has its own power source, and can sound an
alarm if the vehicle’s battery is
compromised.
The inclination sensor can set off
the alarm if it senses movement of
the vehicle, such as a change in
vehicle orientation.
The intrusion sensor monitors the
vehicle interior, and can activate the
alarm if it senses unauthorized entry
into the vehicle’s interior. Do not
allow passengers or pets to remain
in the vehicle when the intrusion
sensor is activated.
Before arming the theft-deterrent
system and activating the intrusion
sensor:
.
Make sure all doors and
windows are completely closed.
. Secure any loose items such as
a sunshades.
. Make sure there are no
obstructions blocking the
sensors in the front overhead
console.
. Close DVD screens before
leaving the vehicle.