2018 GMC YUKON XL alarm

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
In Brief 9
Q : Press to lock all doors.
Lock and unlock feedback can be
personalized. See Vehicle
Personalization 0 158 .
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
7 and hold for more than
three seconds to sound the panic
alarm.
Press
7 again to cancel the panic
alarm.
See Keys (Keyless Access) 0 27 or
Keys (Key Access) 0 28 and
Remote Keyless Entry (RKE)
System 0 31 . Remote Vehicle Start The engine can be started from
outside of the vehicle.
Starting the Vehicle 1. Press and release
Q on the
RKE transmitter.
2. Immediately press and hold
/for at least four seconds or until
the turn signal lamps flash.
Start the vehicle normally after
entering.
When the vehicle starts, the parking
lamps will turn on.
Remote start can be extended.
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 vehicle on and then off.
See Remote Vehicle Start 0 39 .Door Locks To lock or unlock the doors from
inside the vehicle:
.
Press
Q or
K on a power door
lock switch.
.
Pushing down the manual lock
knob on the driver door will lock
all doors. Pushing down the lock
knob on a passenger door will
lock that door only.
.
Pulling the door handle once will
unlock that door. Pulling the
handle again will unlatch it.
To lock or unlock the doors from
outside the vehicle press
Q or
K on
the RKE transmitter.
See Remote Keyless Entry (RKE)
System Operation (Key Access)
0 31 or Remote Keyless Entry
(RKE) System Operation (Keyless
Access) 0 33 .

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 27
Keys, Doors, and
Windows Keys and Locks Keys (Keyless Access) . . . . . . . . 27
Keys (Key Access) . . . . . . . . . . . . 28
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . 31
Remote Keyless Entry (RKE)
System Operation (Key
Access) . . . . . . . . . . . . . . . . . . . . . . 31
Remote Keyless Entry (RKE)
System Operation (Keyless
Access) . . . . . . . . . . . . . . . . . . . . . . 33
Remote Vehicle Start . . . . . . . . . . 39
Door Locks . . . . . . . . . . . . . . . . . . . . 41
Power Door Locks . . . . . . . . . . . . . 42
Delayed Locking . . . . . . . . . . . . . . . 42
Automatic Door Locks . . . . . . . . . 42
Lockout Protection . . . . . . . . . . . . . 42
Safety Locks . . . . . . . . . . . . . . . . . . . 43
Doors Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 43
Power Assist Steps . . . . . . . . . . . . 48
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 49
Vehicle Alarm System . . . . . . . . . 49 Immobilizer . . . . . . . . . . . . . . . . . . . . 51
Immobilizer Operation . . . . . . . . . 51
Exterior Mirrors Convex Mirrors . . . . . . . . . . . . . . . . 52
Power Mirrors . . . . . . . . . . . . . . . . . . 53
Folding Mirrors . . . . . . . . . . . . . . . . . 53
Heated Mirrors . . . . . . . . . . . . . . . . . 54
Automatic Dimming Mirror . . . . . 54
Blind Spot Mirrors . . . . . . . . . . . . . . 54
Reverse Tilt Mirrors . . . . . . . . . . . . 55
Interior Mirrors Interior Rearview Mirrors . . . . . . . 55
Manual Rearview Mirror . . . . . . . . 55
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 56
Child-View Mirror . . . . . . . . . . . . . . 56
Windows Windows . . . . . . . . . . . . . . . . . . . . . . . 56
Power Windows . . . . . . . . . . . . . . . 56
Sun Visors . . . . . . . . . . . . . . . . . . . . . 58
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 58 Keys and Locks Keys (Keyless Access)
{ WarningLeaving 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-11349262) - 2018 - crc - 6/20/17
32 Keys, Doors, and Windows
/ : Press and release
Q , 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 0 39 .
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
Q is pressed again within
three seconds. See Vehicle
Personalization 0 158 .
Pressing
Q arms the alarm system.
See Vehicle Alarm System 0 49 .
If equipped with auto mirror folding,
pressing and holding
Q for
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0 158 .
K : 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, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See Vehicle
Personalization 0 158 .
Pressing
K on the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 0 49 .
If equipped with auto mirror folding,
pressing and holding
K for
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0 158 .
Press and hold
K until the windows
fully open, if enabled. See Vehicle
Personalization 0 158 .
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
7 for 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
7is 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 Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
34 Keys, Doors, and Windows
/ : Press and release
Q , 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 0 39 .
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
Qis pressed again within
three seconds. See Vehicle
Personalization 0 158 .
If the driver door is open when
Q is
pressed, all doors will lock and then
the driver door will immediately
unlock, if enabled. See Vehicle
Personalization 0 158 .
If the passenger door is open when
Q is pressed, all doors lock.
Pressing
Q arms the alarm system.
See Vehicle Alarm System 0 49 . If equipped with auto mirror folding,
pressing and holding
Q for
one second will fold the mirrors,
if enabled. See Vehicle
Personalization 0 158 .
K : 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, the turn signal lamps
flash twice to indicate unlocking has
occurred. If enabled, the exterior
lamps may turn on. See Vehicle
Personalization 0 158 .
Pressing
K on the RKE transmitter
disarms the alarm system. See
Vehicle Alarm System 0 49 .
If equipped with auto mirror folding,
pressing and holding
K for
one second will unfold the mirrors,
if enabled. See Vehicle
Personalization 0 158 . Press and hold
K until the windows
fully open, if remote window
operation is enabled. See Vehicle
Personalization 0 158 .
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
7 for 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
7is 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 liftgate to be
accessed without pressing the RKE
transmitter button. The RKE
transmitter must be within 1 m (3 ft)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 49power assist steps, clear the ice,
then enable the assist steps and
confirm normal function prior to use.
Keep hands, children, pets, objects,
and clothing clear of the power
assist steps when in motion. The
steps will reverse direction if they
encounter an obstruction when
opening or closing. Remove the
obstruction, then open and close the
door on the same side to complete
the motion of the assist steps. If the
obstruction is not cleared, the assist
steps remain extended while driving. To extend both power assist steps
for cleaning, press
j while the
vehicle is in P (Park) or N (Neutral).
Press
j again to retract them.
The DIC will display a message.
Enable/Disable
Press and hold
j for four seconds
to lock and disable the power assist
steps. Press and hold
j for
four seconds again to enable them.
The DIC will display a message.
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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
50 Keys, Doors, and Windows 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
Qon the interior of the door.
3. After 30 seconds the alarm
system will arm, and the
indicator light will begin to
slowly flash. Pressing
Q on 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
K on 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
K on 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 If
K is 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.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/20/17
Keys, Doors, and Windows 51The 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. Intrusion and Inclination
Sensors Disable Switch
It is recommended that the intrusion
and inclination sensors be
deactivated if pets are left in the
vehicle or the vehicle is being
transported.
With the vehicle off, press
o in
the front overhead console to turn
off the feature.
The indicator light will come on
momentarily, indicating that these
sensors have been disabled until
the next time the alarm system is
armed. Immobilizer See Radio Frequency Statement
0 396 .
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 ignition is turned
from off to on.
The security light, in the instrument
cluster, comes on if there is a
problem with arming or disarming
the theft-deterrent system.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-11349262) - 2018 - crc - 6/21/17
402 OnStar
Security If equipped, OnStar provides these
services:
.
With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
.
With Remote Ignition Block,
if equipped, OnStar can block
the engine from being restarted.
.
With Stolen Vehicle Slowdown,
if equipped, OnStar can work
with law enforcement to
gradually slow the vehicle down.
Theft Alarm Notification If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the
vehicle. Navigation OnStar navigation requires a
specific OnStar service plan.
Press
Q to receive Turn-by-Turn
directions or have them sent to the
vehicle ’ s navigation screen,
if equipped.
Turn-by-Turn Navigation 1. Press
Q to connect to an
Advisor.
2. Request directions to be
downloaded to the vehicle.
3. Follow the voice-guided
commands.
Using Voice Commands
During a Planned Route Functionality of the Voice Command
button may vary by vehicle and
region. For some vehicles, press
=to open the OnStar app on the
infotainment display. For other
vehicles press
= as follows. Cancel Route
1. Press
= . System responds:
“ OnStar ready, ” then a tone.
2. Say “ Cancel route. ” System
responds: “ Do you want to
cancel directions? ”
3. Say “ Yes. ” System responds:
“ OK, request completed, thank
you, goodbye. ”
Route Preview
1. Press
= . System responds:
“ OnStar ready, ” then a tone.
2. Say “ Route preview. ” System
responds with the next three
maneuvers.
Repeat
1. Press
= . System responds:
“ OnStar ready, ” then a tone.
2. Say “ Repeat. ” System
responds with the last direction
given, then responds with
“ OnStar ready, ” then a tone.