Radio/Audio System Description & Operation: Amplifier
WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The amplifier does not communicate over the serial data circuits and therefore the amplifier will not set DTCs.