Vehicle Security; Vehicle Alarm System - GMC 2016 Yukon XL Denali Owner's Manual

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.
There are two other modes of
operation:
Deploy Mode: To extend both power
assist steps for cleaning, press
while the vehicle is in P (Park) or
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N (Neutral). Press again to
retract them. The DIC will display a
message.
Lock Mode: Press and hold
four seconds to lock and disable the
power assist steps. Press and
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hold 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

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The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system.
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for
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.
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
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
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
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on the