For 1990-2009 cars

Each of the following service procedures require programming or setup procedures to be performed on the radio.

### Radio Replacement

Important: The radio setup files will configure the radio amplifier (if equipped), internal equalization settings, and program the vehicle identification number (VIN). Without the following setup procedure, the sound quality and volume of the radio may be degraded.

For uplevel radios, setup is completed using the Service Programming System (SPS). Refer to Service Programming System (SPS).

If exchanging the same radio, from one vehicle to another, the VIN from the vehicle receiving the radio needs to be programmed with the scan tool.

For the base radio, use the program VIN procedure available in Special Functions menu of the scan tool. After programming the VIN cycle the ignition key with the retained accessory power (RAP) disabled.