Test 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 numbers below refer to the step numbers on the diagnostic table.
2. This step helps to determine if the Diversity Antenna System is operating.
3. This step helps to determine if Radio Antenna Module is receiving the proper signal from the radio.
Courtesy of GENERAL MOTORS CORP.