Removal Procedure

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Remove the rear window trim panel. Refer to Trim Panel Replacement - Rear Window Shelf in Interior Trim.
Adjust the sound barrier for access.
Use a trim pad remover or other suitable tool to remove the audio amplifier retainers.
Lift the audio amplifier from the rear shelf.

Fig 1: View Of Audio Amplifier Retainers

Courtesy of GENERAL MOTORS CORP.

Disconnect the electrical connectors from the audio amplifier.
Remove the audio amplifier.