Removal Procedure

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

Remove the left rear quarter upper trim panel. Refer to TRIM PANEL REPLACEMENT - REAR QUARTER UPPER (COUPE) or TRIM PANEL REPLACEMENT - REAR QUARTER UPPER (SEDAN) in Interior Trim.
Disconnect the radio antenna module coil connector at the glass.
Remove the radio antenna module coil bolt.

Fig 1: Removing Radio Antenna Module Coil Bolt
Courtesy of GENERAL MOTORS CORP.
Disengage the tab on the module from the opening. Remove the radio antenna module coil.

Fig 2: Removing Radio Antenna Module Coil
Courtesy of GENERAL MOTORS CORP.