Lock All Doors

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Press the transmitter LOCK button to perform the following functions:

Lock all vehicle doors.
Immediately turn OFF the interior lamps.
Flash the exterior lights, if enabled through personalization.
Chirp the horn, if enabled through personalization.
Arm the CTD system, if equipped.
Indicate all doors are locked on the transmitter LCD-All LCD door segments will appear