2002 GMC Sonoma Owner's Manual - Page 196

Cassette Tape Messages CHK TAPE (Check Tape): If CHK TAPE appears on the radio display, the tape won't play because of one of the following errors. Playing a Compact Disc Insert a disc partway into the slot, label side up. The player will pull it in and the disc should begin playing. The display will show the CD symbol. If you want to insert a compact disc with the ignition off, first press DISP or EJT. If an error appears on the display, see "Compact Disc Messages" later in this section. 1 PREV (Previous): Press this pushbutton to go to the previous track if the current track has been playing for less than eight seconds. If this pushbutton is pressed and the current track has been playing for more than eight seconds, it will go to the beginning of the current track. TRACK and the track number will appear on the display. If you hold this pushbutton or press it more than once, the player will continue moving back through the disc. The sound will mute while seeking. 2 NEXT: Press this pushbutton to go to the next track. TRACK and the track number will appear on the display. If you hold this pushbutton or press it more than once, the player will continue moving forward through the disc. The sound will mute while seeking. D The tape is tight and the player can't turn the tape hubs. Remove the tape. Hold the tape with the open end down and try to turn the right hub counterclockwise with a pencil. Turn the tape over and repeat. If the hubs do not turn easily, your tape may be damaged and should not be used in the player. Try a new tape to make sure your player is working properly. D The tape is broken. Try a new tape. D The tape is wrapped around the tape head. Attempt to get the cassette out. Try a new tape. CLEAN: If this message appears on the display, the cassette tape player needs to be cleaned. It will still play tapes, but you should clean it as soon as possible to prevent damage to the tapes and player. See "Care of Your Cassette Tape Player" in the Index. If any error occurs repeatedly or if an error can't be corrected, contact your dealer. 3-42