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To adjust all tone and speaker controls to the middle
position, first end out of audio mode by pressing another
button, causing the radio to perform that function or
by waiting five seconds for the display to return to time
of day. Then press and hold AUDIO for more than
two seconds until you hear a beep. CEN will appear on
the display.
Fade may 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
appears on the display it means that the radio has not
been configured properly for your vehicle and must
be returned to your GM dealer for service.
LOC (Locked): This message is displayed when the
THEFTLOCK
®
system has locked up. Take the vehicle
to your GM dealer for service.
If any error occurs repeatedly or if an error cannot be
corrected, contact your GM dealer.
Radio with CD
If your vehicle has the Bose
®
audio system, your
vehicle will have six Bose
®
amplified speakers.
Base Radio Shown, Bose
®
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