Transmission Failure problems of the 1999 Ford F-250

I bought this truck to pull a 5th wheel camper that weighs just under 11,000 pounds fully loaded. We live at the top of a very steep hill and I use 1st gear to keep hold the weight back as we go down the hill. The transmission failed within 5000 miles of purchasing the truck (failed at 55000 miles). Hall Ford service dept. Rebuilt the transmission, which failed again after 1400 miles. They then replaced it with factory rebuilt which failed again after 500 miles. Hall Ford costumer service was exceptional, working with the Ford engineers at the factory to solve the problem. They were told by the transmission engineer that the problem was that you can not use the transmission in that truck to hold back going down a steep hill. Ford never did give hall Ford service dept. An answer that would work. The service department finally decided to allow the mechanic to use heavy duty sk brand parts to fix the transmission and I have had no trouble since. The reason why I have not brought this forward sooner is that I am concerned that the hall Ford dealership not get in trouble with Ford for using non-Ford parts to fix a problem for which Ford motor CO. Clearly had no answer. There were 3 or 4 other trucks in the shop at the same time with the same problem. When mine was a success, they did the same for the other trucks and solved the problem there, too. I am not concerned about my situation unless it comes back, which I doubt. I am concerned to make sure that it is properly documented for others that will inevitably have the same problem - my understanding is that many have.

While driving the transmission failed. I coasted to the side of the road, turned off the truck and restarted. The truck then moved. I stopped at traffic light and pressed the gas pedal when the light turned green - the truck would not move. After a few minutes the truck moved when I pressed the gas pedal. In the Ford service lot the truck was running and in park - it jumped into reverse. Ford replaced the transmission and took the truck on a test drive. While on the test drive the tech noticed the rear end was grinding. When he took it back to the shop he found the bearings had come apart. They told me a new rear end was needed. Ford has also replaced the electronic gas pedal. They have repaired wiring to correct the windshield washer fluid problem. They have also replaced the radio. I have had the truck in my possession from 12-3 to 12-11. Ea04006 has ifs.