Chevrolet 2004 Classic, Owner'S Manual, Page: 147 / 348

Setting the Tone (Bass/Treble)
AUDIO: To adjust the bass or the treble, push and
release the AUDIO knob until BASS or TREB appears on
the display. Turn the knob to increase or to decrease. The
display will show the bass or the treble level. If a station is
weak or noisy, you may want to decrease the treble.
To adjust bass and treble to the middle position, push and
hold the AUDIO knob. The radio will produce one beep
and adjust the display level to the middle position.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone or
speaker control is displayed. The radio will produce one
beep and adjust the display level to the middle position.
ALL will appear on the display.
AUTO TONE (Automatic Tone): Press this button to
select customized equalization settings designed
for country/western, jazz, talk, pop, rock, and classical.
To return the bass and treble to the manual mode,
push and release the AUTO TONE button until MANUAL
is displayed.
Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the right
and the left speakers, push and release the AUDIO
knob until BAL appears on the display. Turn the knob to
move the sound toward the right or the left speakers.
To adjust the fade between the front and the rear
speakers, push and release the AUDIO knob until FADE
appears on the display. Turn the knob to move the
sound toward the front or the rear speakers.
To adjust the balance and the fade to the middle
position, push and release the AUDIO knob then push
and hold it until you hear one beep. The balance and the
fade will be adjusted to the middle position and the
display will show the speaker balance.
To adjust all tone and speaker controls to the middle
position, push and hold the AUDIO knob when no tone
or speaker control is displayed. The radio will produce
one beep and adjust the display level to the middle
position. ALL will appear on the display.
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