WARNING: This page is about a different car, the 2008 Saturn Outlook, 2008 GMC Acadia, and 2008 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Digital Radio Antenna
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
1
Radio Antenna Procedure: Screw the radio antenna into the radio antenna base assembly.