GMC 2011 Sierra - Manual (Page 248)

Black plate (22,1) GMC Sierra Owner Manual - 2011
7-22 Infotainment System
CD Player Messages
CHECK DISC: If this message
displays and/or the CD ejects, it
could be for one of the following
reasons:
. It is very hot. When the
temperature returns to normal,
the CD should play.
. The road is very rough. When
the road becomes smoother,
the CD should play.
. The CD is dirty, scratched, wet,
or upside down.
. The air is very humid. If so, wait
about an hour and try again.
. There was a problem while
burning the CD.
. The label is caught in the CD
player.
If the CD is not playing correctly,
for any other reason, try a known
good CD.
If any error occurs repeatedly
or if an error cannot be corrected,
contact your dealer. If the radio
displays an error message, write it
down and provide it to your dealer
when reporting the problem.
CD/DVD Player
Care of the CD and DVD Player
Do not add any label to a disc.
It could get caught in the CD or
DVD player. If a disc is recorded
on a personal computer and a
description label is needed, try
labeling the top of the recorded
disc with a marking pen.
The use of CD/DVD lens cleaners
is not advised, due to the risk of
contaminating the lens of the optics
with lubricants internal to the CD
and DVD player mechanism.