Hey here is the link on T56 trans detant fix
http://www.toquez06.com/avm.html

Art...hey, thanks for the response. Have you had any issues with yours? I have an 08 auto coupe that my wife drives most of the time, and last year picked up a 71 coupe with a 5 spd. I like it so much that I decided to move on to a Z. I've been looking at 06-08s for the past 3 months and found one at a chevy dealer in NC that is looking pretty good. Its an 07, 6500 miles, nav, must be a 2LZ, one owner, and have him at 47000. Its gm certified, so has a good amount of warranty on it.