GM Service Manual Online
For 1990-2009 cars only

The power door lock switches are located on the doors.

There is an indicator light on the rear of the door near the window.

(Unlock): Press to unlock the doors.

When pressed, a beep sounds. If the door is closed, the light blinks twice. If the door is open, the light flashes.

[block ] (Lock): Press to lock the doors.

When pressed, a beep sounds. If the door is closed when pressed, the light comes on for a few seconds, then turns off. If the door is open when pressed, the light stays on.