GM Service Manual Online
For 1990-2009 cars only

Radio Setup With RPO UM8

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

Radio Replacement

Important: The radio theft will learn the VIN. Without learning the VIN, the radio will display a locked message (LOC or LOCKED).

If the radio is replaced, perform a VIN Relearn, located in the Special Functions section on the scan tool. Cycle the ignition when complete.