It seems there is no easy way of getting a stuck CD out. I been reading stories of people using knives to carefully remove the CD. There seems to be many unconventional ways to remove it but no recommended way. Here is a site that may help: http://www.wikihow.com/Remove-a-Stuck-CD-from-a-Car-CD-Player
Search Chevrolet TrailBlazer Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet TrailBlazer Experts