Radio/Audio System Schematics (Base Radio - Power, Ground and Serial Data)

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Radio/Audio System Schematic Diagram (Base Radio - Power, Ground & Serial Data)

Courtesy of GENERAL MOTORS CORP.