2003 Buick LeSabre Owner's Manual - Page 198

Compact Disc Era CHECK CD: If this message appears on the radio display, it could be due to one of the following reasons: You're driving on a very rough road. When the road becomes smoother, the disc should play. e The disc is dirty, scratched, wet or upside down. The air is very humid. If so, wait about an hour and try again. 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 can't be corrected, contact your dealer. If your radio displays an error number, write it down and provide it to your dealer when reporting the problem. With the optional compact disc changer, you can play up to 12 discs continuously. Normal size discs may be played using the trays supplied in the magazine. Notice: Place large objects in the trunk appropriately so that they will not come into contact with the CD changer. Damage could result that wouldn't be covered by your warranty. 3-77