Circuit Description
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The Antenna Enable/Amplifier On Signal is a class 2 signal sent from the radio through the RSA module, when equipped. The amplifier will reach full output capabilities 900 milliseconds after receiving this signal. The amplifier will then be capable of class 2 functions 60 milliseconds after being turned ON. This DTC will be set if the circuit is shorted to ground or battery.