automatic or manual dump truck?

I have an automatic dragging a framless end dump... Not a fan the least bit... The transmission has final say on how the engine responds to the throttle. And if you have a loose wire that's associated with the transmission control module, then you're pretty much stuck like chuck.. I have one somewhere and whenever i get into some deep slush, or get the engine steamed off, it causes a fault with the transmission that prohibits me from shifting gears.. Happened once as i was coasting through a toll both and luckily i didn't hit the gate and made it to the side of the road.. the next time was at a Blue Beacon, good news is the driveway was on a slant, so i just costed out of the driveway an into the truckstop parking lot.