Removal Procedure

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

Fig 1: Disconnecting Battery Negative Cable From Battery

Courtesy of GENERAL MOTORS CORP.

Record all of the vehicle preset radio stations.
Record the radio Theftlock® code (if applicable).
Refer to RADIO/AUDIO SYSTEM DESCRIPTION AND OPERATION in Entertainment.
Turn OFF all the lamps and the accessories.
Make sure the ignition switch is in the OFF position.
Disconnect the battery negative cable from the battery.