My 1998 Regal GS just died yesterday. I towed it to AAMCO and he said it is throwing a U1255 code which is where the ECM and PCM communication has been lost. Does anyone know how I can fix this myself or how long it will take? I don't know if it's worth putting the $ into it at the shop. It also threw b2417, b2722, b2723, and b2806. I think the worst is the U1255. Any help would be greatly appreciated.