2008 Acadia Radio Nav system
The Nav system stopped operating correctly. Radio works part of the time. Sometimes get the message "Disk check in progress" With out a disk in the DVD/CD slot. If I put a CD in the slot, it will sometimes play the CD OK, but the unit will not respond to any of the hard buttons on the unit. If I remove the CD it will sometimes show the screen again and the radio will work. The hard buttons will not respond, and the touch buttons will not respond either. I have tried the procedure to open the radio and insert a map disk, but cannot get it to open. Can I take the unit physically out of the vehicle and access the Map DVD slot? HELP!