Lock All Doors

WARNING: This page is about a different car, the 2005 Cadillac CTS. 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.
Momentarily illuminate the interior lamps.
Flash the exterior lights (if selected ON in personalization).
Chirp the horn (if selected ON in personalization).
Arm the content theft deterrent (CTD) system.