2002 Buick LeSabre Owner's Manual - Page 185

Setting the Tone (Bass/Treble) AUDIO: Push and release AUDIO until BASS appears on the display. Then turn the AUDIO knob clockwise to increase bass. BASS and a positive number will appear on the display. Turn the AUDIO knob counterclockwise to decrease bass. BASS and a negative number will appear on the display. BASS and a zero will appear on the display when the bass level is set to the middle position. Stop turning the knob when you find the bass level you want or when the maximum or minimum level is reached. Push and release AUDIO until MID appears on the display. Then turn the AUDIO knob clockwise to increase treble. MID and a positive number will appear on the display. Turn the AUDIO knob counterclockwise to decrease treble. MID and a negative number will appear on the display. MID and a zero will appear on the display when the treble level is set to the middle position. Stop turning the knob when you find the treble level you want or when the maximum or minimum level is reached. Push and release AUDIO until TREBLE appears on the display. Then turn the AUDIO knob clockwise to increase treble. TREBLE and a positive number will appear on the display. Turn the AUDIO knob counterclockwise to decrease treble. TREBLE and a negative number will appear on the display. TREBLE and a zero will appear on the display when the treble level is set to the middle position. Stop turning the knob when you find the treble level you want or when the maximum or minimum level is reached. If a station is weak or noisy, you may want to decrease the treble. To adjust bass, midrange or treble to the middle position, select BASS, MID or TREBLE. Then push and hold AUDIO for more than two seconds until you hear a beep. BASS and a zero, MID and a zero or TREBLE and a zero will appear on the display. To adjust both tone controls and both speaker controls to the middle position, end out of audio mode by pushing the AUDIO knob until the display goes blank. Then push and hold AUDIO for more than two seconds until you hear a beep. ALL CENTERED will appear on the display. 3-28