1999 GMC Sonoma Owner's Manual - Page 132

yellowblue In addition to the four stations already set, up to three more stations may be preset on each band by pressing two adjoining buttons at the same time. Just: 1. Tune in the desired station. 2. Press SET. (SET will appear on the display.) 3. Press two adjoining buttons at the same time, within five seconds. Whenever you press the same two buttons, the station you set will return. 4. Repeat the steps for each pair of pushbuttons. Setting the Tone BASS: Slide this lever up or down to increase or decrease bass. TREB: Slide this lever up or down to increase or decrease treble. If a station is weak or noisy, you may want to decrease the treble. Adjusting the Speakers BAL: Turn the control behind the upper knob to move the sound to the left or right speakers. The middle position balances the sound between the speakers. FADE: Turn the control behind the lower knob to move the sound to the front or rear speakers. The middle position balances the sound between the speakers. Playing the Radio VOLUME: This knob turns the system on and off and controls the volume. To increase volume and turn the radio on, turn the knob clockwise. Turn it counterclockwise to decrease volume and turn the radio off. RECALL: Display the time with the ignition off by pressing this knob. When the radio is playing, press this knob to recall the station frequency. AM-FM Stereo with Cassette Tape Player (If Equipped) 3-8