Radio/Audio System Description and Operation: Notes

Battery positive voltage is provided to the radio from the Radio (15A) fuse in the fuse block. The radio is grounded through a braided cable case ground. 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 vehicles 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 the uplevel systems.

The following list shows the audio system RPOs available with this vehicle:

• Base Radio (U1C) - AM/FM Stereo, CD
• Uplevel Radio (UC6) - AM/FM Stereo, RDS, Multiple CD, EQ
• Uplevel Radio (US8) - AM/FM Stereo, RDS, EQ, CD, MP3
• Satellite Digital Radio (U2K)
• Speaker system custom - 6 (UW6)
• Speaker System premium - 7 (U65) - Includes subwoofer

Each item in the following list represents topics covered in detail below:

• AM/FM Reception
• XM Reception
• Antenna
• Audio Amplifier
• Theft Deterrent
• Radio Data System
• XM Satellite Radio