2003 GMC Savana Van Owner's Manual - Page 194

P.SET PRBG (Preset Program): The front passengers must be listening to something different for each of these functions to work: @ Theft-Deterrent Feature (Non-RDS Radios) THEFTLOCK@ is designed to discourage theft of your radio. The feature works automatically by learning a portion of the Vehicle Identification Number (VIN). If the radio is moved to a different vehicle, it will not operate and LOC will be displayed. With THEFTLOCK@ activated, your radio will not operate if stolen. Press this button to scan through the preset radio stations set on the pushbuttons on the main radio. The radio will go to a preset station stored on your pushbuttons, play for a few seconds, then go on to the next preset station. Press this button again to stop scanning presets. When a cassette tape is playing, press this button to go to the other side of the tape. When a CD is playing, press this button to select a disc. @ @ Theft-Deterrent Feature (RDS Radios) THEFTLOCK@ is designed to discourage theft of your radio. The feature works automatically by learning a portion of the Vehicle Identification Number (VIN). If the radio is moved to a different vehicle, it will not operate and LOCKED will be displayed. When the radio and vehicle are turned off, the blinking red light indicates that THEFTLOCK@ is armed. With THEFTLOCK@ activated, your radio will not operate if stolen. TAPE CD: Press this button to switch between playing a cassette tape or a CD when listening to the radio. The inactive tape or compact disc will remain safely inside the radio for future listening. 3-73