Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Park Avenue. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE (TOP POST) in Engine Electrical.
Open and lower the instrument panel compartment by carefully releasing the rear holding tabs.
Pull down in order to remove the instrument panel module (IPM) (1).
Disconnect the electrical connectors from the IPM.

Fig 1: Removing Instrument Panel Module
Courtesy of GENERAL MOTORS CORP.