My 98 just started acting up this morning when i came home from work. When weight is appilied to the drivers seat the truck shuts down, if im not in the seat it runs fine. I do know that it has nothing to do with the safety belt warning wires that are connected to the buckle. im thinking it may have something to do with the fuel pump wires running on the bottom of the truck. Any advice, pleases share, im lost?????