WARNING: This page is about a different car, the 2007 Saturn Ion Red Line, 2007 Saturn Ion 3, and 2007 Saturn Ion 2. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Power Door Lock Switch
Courtesy of GENERAL MOTORS CORP.
Connect the electrical connector.
Position the door lock switch in the door trim panel.
Install the door lock switch pressing in until fully seated.