Circuit/System Description
WARNING: This page is about a different car, the 2008 Cadillac XLR. However, it is still accessible from the selected car via links, so may be relevant.
The digital radio receiver (DRR) receives XM satellite radio signals via 2 digital radio antennas located in each outside rearview mirror. The signals are passed to the DRR through digital radio antenna coax. From the DRR, separate left and right audio signals (+) are sent to the CD changer. The CD changer processes these signals and passes the audio to the appropriate speakers or audio amplifier.