1997 GMC Suburban Owner's Manual - Page 167

P.SCAN: The preset scan button lets you scan through your favorite stations stored on your pushbuttons. Select either the AM, FMl or FM2 mode and then press P.SCAN. It will scan through each station stored on your pushbuttons and stop for a few seconds before continuing to scan through all of the pushbuttons. Press P.SCAN again or one of the pushbuttons to stop scanning to listen to a specific preset station.P.SCAN will light up on the display while in this mode.If one of the stations stored on a pushbutton is too weak for the location you are in, the radio display will show the channel number (PI-P6) for several seconds before advancing to thenext preset station. Setting the Tone BASS: Press lightly on this knob to release it from its stored position. Turn the knob clockwise to increase bass and counterclockwise to decrease bass. When the BASS control is rotated, the AUTO TONE display will go blank. TREB: Press lightly on this knob to release it from its stored position. Turn the knob clockwise to increase treble and counterclockwise to decrease treble. When the TREB control is rotated, the AUTO TONE display will go blank. If a station is weak or noisy, you may want to decrease the treble. Push these knobs back into their stored positions when you're not using them. AUTO TONE: Press this button to select among the six preset equalization settingsand tailor the sound to the music or voice being heard. Each time you press the button, the selection will switch to one of the preset settings of CLASSIC, NEWS, ROCK, POP, COUNTRYNESTERN or JAZZ. To return to the manual mode, press and release this button until the AUTO TONE display goes blank. This will return the tone adjustment to the BASS and TREB controls. If a BASS or TREB control is rotated, the AUTO TONE display will go blank. Adjusting the Speakers BAL: Press lightly on this knob to release it from its stored position. Turn the control clockwise to adjust sound to the right speakers and counterclockwise to adjust sound to the left speakers. The middle position balances the sound between the speakers. FADE: Press lightly on this knob to release it from its stored position. Turn the control clockwise to adjust the sound to the front speakersand counterclockwise for rear speakers. Themiddle position balances the sound between the speakers. Push these knobs back into their stored positions when you're not using them. 3-17