1997 GMC Safari Owner's Manual - Page 158

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: 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. 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. P.SCAN: Press both SEEK buttons to scan through each of your preset stations. The system will scan through and play each preset station stored on your pushbuttons for a few seconds. Press either SEEK button or RECALL to stop scanning through the preset stations. 3-12