WARNING: This page is about a different car, the 2006 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: TV Antenna Module, Amplifier, TV Rear Glass Antenna, and Auxiliary RCA Video Jacks (Export w/U2Y/U2X)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Traffic Information Receiver (Japan w/U2Y/U2X)
Courtesy of GENERAL MOTORS CORP.
Fig 3: Navigation Antenna, Radio, Audio Amplifier, VCIM, and ISRVM