GMC Yukon Denalid Owner's Manual page 117

Q
(Lock): Press the lock button to lock all the
doors. If enabled through the Driver Information
Center (DIC), the parking lamps will flash once to
indicate locking has occurred. If enabled through
the DIC, the horn will chirp when the lock button is
pressed again within five seconds of the previous
press of the lock button. See DIC Vehicle
Customization (With DIC Buttons) on page 262 for
additional information. Pressing the lock button
may arm the content theft-deterrent system.
See Content Theft-Deterrent on page 135.
"
(Unlock): Press the unlock button to unlock
the driver's door. If the button is pressed
again within five seconds, all remaining doors will
unlock. The interior lamps will come on and
stay on for 20 seconds or until the ignition is turned
on. If enabled through the DIC, the parking
lamps will flash once to indicate unlocking has
occurred. See DIC Vehicle Customization
(With DIC Buttons) on page 262. Pressing the
unlock button on the RKE transmitter will disarm
the content theft-deterrent system. See Content
Theft-Deterrent on page 135.
m
(Liftglass): Press and hold this button on
the RKE transmitter to open the liftglass.
&
(Power Liftgate): Press and hold this button
on the RKE transmitter to open and close the
liftgate. The taillamps will flash and a chime will
sound to indicate when the liftgate is opening and
closing.
L
(Vehicle Locator/Panic Alarm): Press and
release this button to locate your vehicle. The turn
signal lamps will flash and the horn will sound
three times. Press and hold this button for more
than two seconds to activate the panic alarm.
The turn signal lamps will flash and the horn will
sound repeatedly for 30 seconds. The alarm
will turn off when the ignition is moved to RUN or
the alarm button is pressed again. The ignition
must be in OFF for the panic alarm to work.
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