WARNING: This page is about a different car, the 2005 Saturn Ion Red Line, 2005 Saturn Ion 3, 2005 Saturn Ion 2, and 2005 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
Connect the connector (2) to the sunroof control switch (1).
Fig 1: Connecting Sunroof Control Switch Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Rotate the sunroof control switch into the headliner and press to engage the clips.