Removal Procedure

WARNING: This page is about a different car, the 2007 Buick LaCrosse and 2007 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Remote Control Door Lock Receiver

Courtesy of GENERAL MOTORS CORP.

Remove the rear window shelf trim panel. Refer to Rear Window Shelf Trim Panel Replacement in Interior Trim.
Disengage the outboard receiver retainers from the rear shelf.
Lift the receiver from the rear window shelf trim panel and disconnect the electrical connector.
Remove the receiver.