GMC 2007 Savana - Manual (Page 217)

Radio Messages
CAL ERR (Calibration Error): The audio system
has been calibrated for your vehicle from the
factory. If CAL ERR appears on the display, it
means that the radio has not been configured
properly for the vehicle and must be returned to
your dealer for service.
LOCKED: This message is displayed when the
THEFTLOCK
® system has locked up. Take
the vehicle to your dealer for service.
If any error occurs repeatedly, or if an error cannot
be corrected, contact your dealer.
Playing a CD
If the ignition or radio is turned off, with a CD in the
player, it stays in the player. When the ignition or
radio is turned on, the CD starts playing where it
stopped, if it was the last selected audio source.
When a CD is inserted, the CD symbol appears on
the display. As each new track starts to play,
the track number appears on the display.
The CD player can play the smaller 3 inch (8 cm)
single CDs with an adapter ring. Full-size CDs and
the smaller CDs are loaded in the same manner.
If playing a CD-R, the sound quality may be
reduced due to CD-R quality, the method of
recording, the quality of the music that has been
recorded, and the way the CD-R has been handled.
There may be an increase in skipping, difficulty in
finding tracks, and/or difficulty in loading and
ejecting. If these problems occur, check the bottom
surface of the CD. If the surface of the CD is
damaged, such as cracked, broken, or scratched,
the CD will not play properly. If the surface of the
CD is soiled, see Care of Your CDs on page 226 for
more information.
If there is no apparent damage, try a known
good CD.
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