Thank you, SisterBliss... your method also worked on my 6000CD and saved me the expense of having to buy a new car radio.
Some people might find getting the radio out a little difficult. What worked in my case were two wire handles from old paint buckets that I cut and bent into U shapes. Stick them into the holes on either side of the radio, exert sideways pressure (i.e. away from the radio), and hey presto, the thing will slide out.
Mick, July 2009