Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

Remove rear shelf trim from inside of rear storage compartment. Refer to COMPARTMENT TRIM PANEL REPLACEMENT - REAR in Body Rear End.
Disconnect the electrical connector from the module.
Remove the module retainers (2).
Remove RFA module (1) from the shelf (2).

Fig 1: Removing Remote Control Door Lock Receiver
Courtesy of GENERAL MOTORS CORP.