Radio/Stereo: Description and Operation

RADIO/AUDIO SYSTEM DESCRIPTION AND OPERATION

The Entertainment System on this vehicle is configured with either a base or an uplevel system. Both the base and uplevel systems contain a radio,
antenna, speakers, and on some vehicle lines an audio amplifier and/or rear seat audio (RSA).

The uplevel system differs from the base level system by providing the customer with enhanced audio system features. Some of those features may include the radio data system (RDS), extended range speakers, an audio amplifier (or an uplevel amplifier), rear seat audio (RSA), and video entertainment system.

The following list shows the radios available for this vehicle:
- Radio (UNO) - AM/FM Stereo RDS and CD
- Uplevel Radio (UPO) - AM/FM Stereo, Cassette with CD and RDS
- Uplevel Radio (U1P ) - AM/FM Stereo, CD with Equalizer and RDS
- Uplevel Radio (U1Q) - AM/FM Stereo, Cassette, CD with Equalizer and RDS
- Uplevel Radio (UC6) - AM/FM, Integral Multi Disc CD Changer (IMCX) and RDS

Radio Features Part 1:

Radio Features Part 2:

RADIO FEATURES

DIGITAL RADIO RECEIVER
The radio controls communicate with the digital radio receiver via the class 2 communication circuit. The digital radio receiver sends remote radio audio signals to the radio.

DIGITAL RADIO
The digital radio receiver utilizes class 2 serial data to determine if it is in the appropriate vehicle. Each time the digital radio receiver receives the "run" power mode message, it compares the VIN information received from the body control module (BCM) on the class 2 serial data circuit. If a mis-match occurs, the radio display will indicate to the user the digital radio receiver is locked. The digital radio receiver cannot be unlocked, it must be replaced. The two scenarios able to cause this condition are:
1. A digital radio receiver is installed from another vehicle.
2. The BCM is replaced and not properly setup with the correct VIN information for that vehicle.