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I have a fantastic 04 Trail Blazer. The CD player did not work. I bought a replacement with cassette. The yard that the
Trail Blazer came from installed the replacement unit. A local Chevy dealer unblocked it for $136. + tax. It ate the CD
I inserted. (The yard that sold me the unit has an untested replacement.) Will it hold the program if it is removed
and repaired at a radio repair shop....or....must it be unblocked all over again?
The Trail Blazer has only 121K on the clock. All of the bugs have been worked out except the radio.
 
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