Ok... so as i get going down the road, my truck wants to jump in rpm's erratically, and the tranny feels like its surging? the check engine light wasn't on and today i got what some call a "Dead Pedal" the check engine light came on and it snapped right back... it feels like it just doesn't know which gear it should be in? im so confused ive been online looking for days... ive read it could be many things From the TPS, a Torque Converter to a Ground or even a solenoid. Im so confused :banghead:, and I just bought the truck. I have always wanted a cummin's, I just hope I didn't buy a lemon PLEASE if anyone has had or heard of this I really need some insight here. Thanks HarringtonPS: I also did the OBII codes and Got P0743,P1693,P1763,P1765 and auto zone got something also related to the TPS... if that helps