Chevrolet Silverado Classic 2007 Owner's Manual page 293

Adjusting the Speakers (Balance/Fade)
AUDIO: To adjust the balance between the
right and the left speakers, press and release
AUDIO until BAL (balance) displays. Then press
and hold the up or the down arrow to move
the sound toward the right or the left speakers.
To adjust the fade between the front and the
rear speakers, press and release AUDIO until
FAD (fade) displays. Then press and hold the
up or the down arrow to move the sound toward
the front or the rear speakers.
To adjust balance or fade to the middle position,
select BAL or FAD. Then press and hold
AUDIO for more than two seconds until a beep
sounds. B (balance) and a zero or F (fade) and
a zero displays.
To adjust both tone controls and both speaker
controls to the middle position, first exit out
of audio mode by pressing another button,
causing the radio to perform that function or
wait five seconds for the display to return to
time of day. Then press and hold AUDIO for
more than two seconds until a beep sounds.
CEN (center) displays.
Fade might not be available if the vehicle is a
regular cab model.
Radio Messages
CAL (Calibrated): The audio system has been
calibrated for your vehicle from the factory.
If CAL displays it means that the radio has not
been configured properly for your vehicle and
must be returned to your dealer/retailer for service.
LOC (Locked): This message is displayed
when the THEFTLOCK
Take the vehicle to your dealer/retailer for service.
If any error occurs repeatedly or if an error
cannot be corrected, contact your dealer/retailer.
®
system has locked up.
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