GMC 2009 Yukon XL Owner's Manual page 260

AUTO DOOR UNLOCK
This feature allows you to select whether or not to turn
off the automatic door unlocking feature. It also
allows you to select which doors and when the doors
will automatically unlock. See Programmable Automatic
Door Locks on page 2-11 for more information.
Press the customization button until AUTO DOOR
UNLOCK appears on the DIC display. Press the
set/reset button once to access the settings for this
feature. Then press the customization button to scroll
through the following settings:
OFF: None of the doors will automatically unlock.
DRIVER AT KEY OUT: Only the driver's door will
unlock when the key is taken out of the ignition.
DRIVER IN PARK: Only the driver's door will unlock
when the vehicle is shifted into P (Park).
ALL AT KEY OUT: All of the doors will unlock when
the key is taken out of the ignition.
ALL IN PARK (default): All of the doors will unlock
when the vehicle is shifted into P (Park).
NO CHANGE: No change will be made to this feature.
The current setting will remain.
To select a setting, press the set/reset button while the
desired setting is displayed on the DIC.
3-76
REMOTE DOOR LOCK
This feature allows you to select the type of feedback you
will receive when locking the vehicle with the Remote
Keyless Entry (RKE) transmitter. You will not receive
feedback when locking the vehicle with the RKE
transmitter if the doors are open. See Remote Keyless
Entry (RKE) System Operation on page 2-5 for more
information.
Press the customization button until REMOTE DOOR
LOCK appears on the DIC display. Press the set/reset
button once to access the settings for this feature. Then
press the customization button to scroll through the
following settings:
OFF: There will be no feedback when you press the lock
button on the RKE transmitter.
LIGHTS ONLY: The exterior lamps will flash when you
press the lock button on the RKE transmitter.
HORN ONLY: The horn will sound on the second press
of the lock button on the RKE transmitter.
HORN & LIGHTS (default): The exterior lamps will
flash when you press the lock button on the RKE
transmitter, and the horn will sound when the lock button
is pressed again within five seconds of the previous
command.
NO CHANGE: No change will be made to this feature.
The current setting will remain.
To select a setting, press the set/reset button while the
desired setting is displayed on the DIC.