2003 Chevrolet Avalanche Owner's Manual - Page 260

PROG (Program): The front passengers must be listening to something different for each these of functions to work: Press this button to go to the preset radio stations set on the pushbuttons on the main radio. e DVD Distortion You may experience audio distortion in the IR headphones when operating cellular phones, scanners, CB radios, Global Positioning Systems (GPS)", two-way radios, mobile fax, or walkie talkies. It may be necessary to turn off the DVD player when operating one of these devices in or near the vehicle. * Excludes the Onstar@System. 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. e e Understanding Radio Reception The range for most AM stations is greater than for FM, especially at night. The longer range, however, can cause stations to interfere with each other. AM can pick up noise from things like storms and power lines. Try reducing the treble to reduce this noise if you ever get it. Theft-Deterrent Feature 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@ armed. is With THEFTLOCK@ activated, your radio will not Operate if stolen. FM Stereo FM stereo will give you the best sound, but FM signals will reach only about 10 to 40 miles (1 6 to 65 km). Tall buildings or hills can interfere with FM signals, causing the sound to come and go. 3-101