I have a frame off restoration f250 its stock except for a cold air intake and a 4 inch turbo back exhaust and a 3 inch lift for clearance of exhaust, it has a brand new jasper rear end , problem started with abs light constant and hard shifting took to a trans shop and they pulled the p0500 code and said the transmission is fine , I have put another vss sensor in checked wires from there to psom even though the speedo works as it should , checked wires from. Psom to pcm plug with less then .5 ohms of resistance, checked all fuses , and at this point I. Lost and this is my only transportation