Towed my camper out on the beach this past weekend. Fourth time I have had it out. Camper loaded with water is in the 10,200 lbs range. All tires aired down to 20 lbs psi, truck and trailer. 1st three times this year went real smooth. This time sat in a little traffic on way out, Pulled out to my spot, went to back in and truck did not move. Apparently a fail safe in transmission. Checked gauge and was surprised to see the fluid was that hot. Truck was not really placed under that much stress. Not sure if it's a gauge malfunction or fluid did heat up that much. My 2007 Tundra worked much harder in softer sand and never had this issue.