I have a 2000 camaro and when I connect VCM scanner to it I get most PID's showing up as unsupported parameters. The only thing I can read are RPM, vehicle speed, LTFT, STFT, ect. I get upsupported parameter with knock, inj. pulse width, pretty much everything. Also when I pull the file out of the PCM and save it, it wont let me open it up. I get an error. I can't remember what error it was though and I have since deleted the file and the car is on it's way home. Any ideas?