z24 tranny HELP PLZ

Hey all ive got a 97 Z24 with a 4spd auto. Now this is the story. The c.e.l. came on and the tranny went into limp home mode. It would not shift or anything. Now I took it to the shop and they said it was the shift solinoid. So i reaplaced the main one and the ones that go from 1st to 2nd, and that didnt fix it. It came up the same codes and still wound not shift. So i replaced the tranny with one from the junk yard and as soon as i turnd it on same 4 codes. Hade them cleand and everything and they still come and and it still wont shift. Now im wondering if anyone knows anything about this.? The shop said I need a new computer. What do uall think? Thnax KEN

Def sound like u need a new computer its prolly fried. My g/f's sister had the same problem in her accord and thats all it needed n it works fine now

You can use an used computer also,GM computers can be programed over and over again.GM is the only one that does this.It is not a diy project,has to be done at the dealer.Gm's factory scan tool Tech 2,an Ac Delco program installed in a pentium 4 personal computer have to be used to program a GM computer.Take the old computer with you when you go to the auto slavage yard,they need numbers off the old computer to match.