2003 Chevrolet Tahoe Owner's Manual - Page 275

PROG (Program): The front passengers must be listening to something different for each of these functions to work: Press this button to go to the preset radio stations set on the pushbuttons on the main radio. When a cassette tape is playing, press this button to go to the other side of the tape. When a CD is playing in the radio, press this button to go back to the beginning of the CD. When a CD is playing in the CD changer, press this button to select a disc. Audio Steering Wheel Controls You can control certain radio functions using the buttons on your steering wheel. Theft-Deterrent Feature THEFTLOCK@ designed to discourage theft of your is 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. (OnStarNoice Recognition): If your vehicle has OnStap, you can press this button to interact with the Onstar@system. See the Onstar@manual provided with your vehicle for more information. IF your vehicle does not have Onstar@,pressing this button will mute the audio system. 3-124