I have a 2005 F350 and i've been having some problems with the tranny, at random times sometimes weeks or even months apart i will be driving and my tow haul light will start flashing and my truck will what seems like come out of gear and then slam back into gear. I had it scanned and the code was for the shift solonoid "D" which i had replaced at a tranny shop along with a tranny flush. That didn't help and because it only does this once in a while theydon't have a way of tracking down the problem. If anyone else has experienced this please let me know what you came up with. Any help is greatly appreciated.