1997 GMC Suburban Owner's Manual - Page 164

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. Setting the Tone BASS: Slide this lever up or down to increase or decrease bass. 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. 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 theSpeakers 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. 4. Repeat the steps for each pair of pushbuttons. P.SCAN: Press both SEEK buttons to scan through each of your preset stations. Thesystem 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. 3-14