Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

Remove the instrument panel cluster trim plate. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.
Pull out on the headlamp switch in order to release the clips.
Remove the headlamp switch.
Disconnect the electrical connector.

Fig 1: Disconnecting Headlamp Switch Connector
Courtesy of GENERAL MOTORS CORP.