Hi, Just bought a 99 Grand Prix GTP supercharge and the person that I bought it from had problems getting the key out of the ignition so they had the steering column replaced. So I have a car with a key stamped PKIII on it (this key opens the car doors of the vehicle, not for the old ignition though, as I understand it) and a key that came with the new steering column/ignition. When hooked up battery the horn started blowing, and I unlocked the car doors with old key and that took care of that problem disabling the alarm. But when I try to start the vehicle with the new key it acts like it's turning over but I assume it's not reading the right code or whatever and the theft deterrent module is shutting off the fuel injectors. What do I need to do to get this vehicle running??? Also, I do have a Snap-on MT2500 scanner and have heard that this will detect something?? Haven't had time to check that out yet. Does anyone know if the scanner can override anything to do with this? Any help will be appreciated. Thank you.