ok heres the problem. my 01, 6.0l will throw a message every now and again. the fuel gauge will drop below empty and that triggers my low fuel message. i have pulled fuses to reset the ecm, the truck has been on a diagnostic machine, all wiring has been checked. when we hooked it up to the machine, it was not doing it, so it threw no code. is this an issue with this truck? thanks in advance.