1995 GMC Sonoma Owner's Manual - Page 120

How to Operate Your E T P AM-FM Stereo Audio System This part tells you how your ETR@AM-FM stereo audio system works. Upper Knob (PWR-VOL-RECALL) functions: Turn it to control the volume. Press it to display the time when the ignition is off. 0 - The upper knob has these four Turn it to turn the system on and off. Press it to change between the clock and the radio station frequency displayed when the radio is on. BAL (Balance) - The control ring behind the upper knob adjusts the lefthight speakerbalance. Lower Knob (TUNE-AM-FM) 0 - The lower knob has two functions: Turn it to tune in radio stations. Press it to change between the AM and FM bands. FADE - The control ring behind the lower knob adjusts the front/rear speaker balance. SEEK - Press the SEEK button to cause the receiver to SEEK the next higher station and stop. SCAN - Press the SCAN button to hear each station for a fe.w seconds. Push it again when you reach the station you want to listen to and the radio will stop scanning. "SCAN"appears in the display. 3-6