GMC 2007 Sierra Owner's Manual page 294

DELAY DOOR LOCK
On vehicles with a crew cab, this feature allows
you to select whether or not the locking of
the vehicle's doors will be delayed. When locking
the doors with the power door lock switch or
the Remote Keyless Entry (RKE) transmitter and a
door is open, this feature will delay locking the
doors until five seconds after the last door
is closed. You will hear three chimes to signal that
the delayed locking feature is in use. The key
must be out of the ignition for this feature to work.
You can temporarily override delayed locking
by pressing the power door lock switch or the lock
button on the RKE transmitter a second time.
See Delayed Locking on page 119 for more
information.
Press the customization button until DELAY
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 delayed locking of
the vehicle's doors.
ON (default): The doors will not lock until
five seconds after the last door is closed.
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NO CHANGE: No change will be made to this
feature. The current setting will remain.
Choose one of the available settings and press
the set/reset button while it is displayed on the DIC
to select it.
EXIT LIGHTING
This feature allows you to select the amount of
time you want the exterior lamps to remain
on when it is dark enough outside. This happens
after the key is turned from RUN to LOCK.
Press the customization button until EXIT
LIGHTING 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: The exterior lamps will not turn on.
30 SECONDS (default): The exterior lamps will
stay on for 30 seconds.
1 MINUTE: The exterior lamps will stay on for
one minute.
2 MINUTES: The exterior lamps will stay on for
two minutes.