Radio/Audio System Description and Operation: Notes

Battery positive voltage is provided to the radio from the RDO/INTLP/ONSTAR fuse in the fuse block- I/P. The radio is grounded to G302 and G303. The radio is enabled/disabled by class 2 messages from the body control module (BCM).

The Entertainment System on this vehicle is configured with a base and uplevel system. The base and uplevel systems contain a radio, antenna, speakers, and on some vehicle lines an audio amplifier.

The uplevel system differs from the base system by providing the customer with enhanced audio system features. Some of those features may include the radio data system (RDS), an audio amplifier and programmable equalizer (EQ). Satellite digital radio (U2K) is available with uplevel systems.

The following list shows the radios available for this vehicle:

• Base Radio (UM7) - AM/FM Stereo
• Base Radio (UM6) - AM/FM Stereo and Cassette
• Base Radio (U1C) - AM/FM Stereo and CD
• Uplevel Radio (UP0) - AM/FM Stereo, Cassette, CD, and RDS
• Uplevel Radio (U1P) - AM/FM Stereo, CD, EQ and RDS
• Uplevel Radio (U1Q) - AM/FM Stereo, Cassette, CD, EQ and RDS
  Fig 1: Radio Features Table (1 Of 2)

  Courtesy of GENERAL MOTORS CORP.

Fig 2: Radio Features Table (2 Of 2)

Courtesy of GENERAL MOTORS CORP.