WARNING: This page is about a different car, the 2003 Pontiac Grand Am and 2003 Oldsmobile Alero. 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).
Rotate the sunroof control switch into the headliner and press to engage the clips.
Fig 1: Connecting Connector To Sunroof Control Switch