Lock All Doors

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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.
Chirp the horn, if the LOCK button is pressed a second time within 5 seconds.