Removal Procedure

Remove the trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER LOWER .
Disconnect the electrical connector.
Remove the screws which retain the rear cargo audio control.

Fig 1: Removing Rear Cargo Audio Control Screws
Courtesy of GENERAL MOTORS CORP.
Remove the rear cargo audio control from the trim panel.

Fig 2: Removing Rear Cargo Audio Control
Courtesy of GENERAL MOTORS CORP.