GM Service Manual Online
For 1990-2009 cars only

Object Number: 849541  Size: A2

The power door lock switches are located on the driver's and front passenger's armrests.

[block ] (Lock): Remove the ignition key and press the lock symbol to lock all of the doors. If the delayed locking feature is on, the doors will not lock until five seconds after the last door is closed. Press the lock symbol twice to override this feature and lock all of the doors immediately. See Delayed Locking for more information.

(Unlock):  To unlock the doors, press the unlock symbol.