Radio/Navigation System Schematics
WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Radio Antennas, Data Communication, Lighting, Power, and Vehicle Speed Signal Circuit Schematic
Fig 2: Audio Amplifier Power, Ground, and Front and Rear Audio Inputs Circuit Schematic (UQA or UQS)
Fig 3: Audio Amplifier Power, Ground, and Front and Rear Audio Inputs Circuit Schematic (UQA or UQS with UK6)