2005 GMC Safari Owner's Manual - Page 160

AM FM: Press this button to switch between FM1, FM2, or AM. If the front seat passengers are listening to the radio, the RSA will not switch between the bands or change the frequency. Press AM FM to listen to the radio when a CD is playing. The inactive CD will remain safely inside the radio for future listening. When listening to the radio, press the up or the down arrow to go to the next or to the previous station and stay there. This function is inactive if the front seat passengers are listening to the radio. To scan preset stations, press and hold either SEEK arrow until SCAN appears on the radio display. The radio will go to a station, play for a few seconds, then go on to the next station. Press either SEEK arrow again to stop scanning. This function is inactive if the front seat passengers are listening to the radio. When a CD is playing, press the up arrow to go to the next track on the CD. Press the down arrow to go to the start of the current track if more than eight seconds have played. This function is inactive if the front seat passengers are listening to a CD. P.SET PROG (Preset Program): Press this button to scan the preset radio stations set on the pushbuttons on the main radio. The radio will go to a preset station, play for a few seconds, then go on to the next preset station. Press this button again to stop scanning. This function is inactive if the front seat passengers are listening to the radio. TAPE CD: Press this button to play CD when listening to the radio. w SEEK x: Theft-Deterrent Feature THEFTLOCK® is designed to discourage theft of your vehicle's radio. It works by using a secret code to disable all radio functions whenever battery power is interrupted. The THEFTLOCK® feature for the radio may be used or ignored. If ignored, the radio plays normally and the radio is not protected by the feature. If THEFTLOCK® is activated, the radio will not operate if stolen. When THEFTLOCK® is activated, LOC will appear on the radio display to indicate a locked condition anytime battery power has been interrupted. If the battery loses power for any reason, you must unlock the radio with the secret code before it will operate. 3-50