2002 Buick LeSabre Owner's Manual - Page 178

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. Adjusting the Speakers (Balance/Fade) AUDIO: To adjust the balance between the right and left speakers, push and release AUDIO until BAL appears on the display. Then turn the AUDIO knob clockwise to move the sound to the right speakers or counterclockwise to move the sound to the left speakers. A bar graph with indicators will show how the sound is balanced between the right and left speakers. Stop turning the AUDIO knob when you find the speaker balance you want or when the maximum or minimum level is reached. To adjust the fade between the front and rear speakers, push and release AUDIO until FADE appears on the display. Then turn the AUDIO knob clockwise to move the sound to the front speakers or counterclockwise to move the sound to the rear speakers. A bar graph with indicators will show how the sound is balanced between the front and rear speakers. Stop turning the AUDIO knob when you find the speaker balance you want or when the maximum or minimum level is reached. 3-21