GM Service Manual Online
For 1990-2009 cars only

The power door lock switches are located on the door panels near the windows.

(Unlock): Press to unlock the doors.

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

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

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

When unlock is pressed and the door is closed, a beep sounds and the light flashes twice. When the button is pressed and the door is open, a beep sounds and the light flashes.