Lock All Doors

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Press the LOCK button in order to perform the following functions:

Lock all of the doors.
Immediately turn OFF the interior lamps.
Flash the park lamps if the ignition is OFF and the doors are closed.
Chirp the horn if the ignition is OFF and the doors are closed.