WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Connecting Connector To Sunroof Control Switch
Courtesy of GENERAL MOTORS CORP.
Connect the connector to the sunroof control switch.
Firmly push the sunroof control switch into the headlining module in order to secure the sunroof control switch.