PCM doesn't want to communicate with the vehicle... Its installed in a z06 2001.
The PCM is giving me P1516 TAC output or something... And Engine Overheating, reduced engine power bla bla bla modes.
The ECT is reading 260F ALL The time...
The PCM worked great for a little while.. after that.. the car shut itself down.. later.. it "unlocked" and then you could start the car.. now its giving problems again...
Anyone with first hand knowledge of this???
The PCM doesn't want to display trouble codes via the IPC. When it works fine it does.
Ideas?