The following service procedure requires programming or setup procedures to be performed on the radio.

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

For a replacement radio, perform the Radio Set-up Procedure available in Special Functions menu of the scan tool. Follow any on-screen instructions to complete the setup procedure.

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. Use the VIN Relearn 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. Without learning the VIN, the radio will display a locked message (LOC or LOCKED).