I towed mine (approx same weight) from Cincinnati to Newport News, VA. not too long ago. AHC went into "lo" most of the trip.. Sometimes after topping off with fuel I would restart the truck and it would hold it in "N", other times "lo". I am gathering parts slowly to add spacers in the rear and the air lift bags. Overall though it tows great and has very predictable road manners with the WD setup.