Automatic Transmission Control Module problems of the 2008 Ford F-350

Ford f350 with 6. 4l diesel had check engine light (cel) illuminate while driving. Engine immediately slowed to idle (800rpm) and would not respond to throttle inputs. Was not able to clear roadway and blocked traffic on busy urban road. Dealer was "not able to find anything wrong", yet "performed calibration update on pcm". I was informed "this needs to be done as vehicle ages and sensors wear. " reviewed owners manual and did not located maintenance interval for "calibration updates to pcm. " I am certain this is an inherent pcm software code error leading to complete loss of engine operation. A dangerous situation on congested roadways.

I was notified by Ford that my 2008 F-350 6. 4 diesel pickup had two recall notices to be performed. On 1. 29. 08 I took the truck to capistrano Ford and they performed recall 08b06 and recall 08b07. Since then the automatic transmission has not performed the same. I pull a fifth wheel trailer. The dry weight of the trailer is about 9000lbs. When going downhill the automatic transmission no longer downshifts to assist in braking and downhill speed control. The transmission is equipped with a tow/ haul setting on the end of the shift lever. Before the recall this feature worked great. As you start down a hill, taking your foot off the gas the truck will coast and then begin to pick up speed. When the transmission sensed the increase in speed while coasting, the transmission would automatically downshift. It would do this at any speed. After the recall, the transmission will not downshift until long after it has any affect on braking or speed control. While braking, sometimes hard if it is a steep hill, the transmission will downshift and the truck will shutter. It is a short burst that is very noticeable and obviously not normal. The shutter never happened before the recall. I have taken in back to Ford twice and they say that the transmission control module (tcm) was reprogrammed as part of recall 08b07 but they can not change it back to the original program. In short, Ford will not do anything about this. The operational safety of the vehicle, while towing loads that the truck is designed to tow, has been compromised. Ford says they can not do anything about it. Is anyone else having this problem? according to Ford this complaint has not been made. If I'm the only one having the problem, then Ford should fix my truck.