Hi, I have a 04 ford F350 6.0 liter diesel truck with the 5R110 transmission. I have never had any slipping, jerking or anything going on with the trans. It has always shifted smooth. This last weekend we towed our camper out to our land. It was pretty muddy and had to put the truck into 4 wheel low just to get up the hill and even then it was hard to get to the top. After we reached the top i tried to reverse to put the camper in the spot we wanted it in and it wouldn't go into reverse. We dropped the camper and headed home. The truck ran fine on the way home shifting smooth in drive all the way home. But when I got home I put the rear up on stands and started trying it in park, reverse, drive and so on. Now here is what is happening. It seems like its stuck into drive, it will continue to drive and shift smooth no matter what gear your in even neutral. Except for park and reverse. When in reverse it acts like it wants to go both reverse and forward. I dropped the pan and found no metal filings but a little normal clay like material on the magnet. The trans fluid didn't smell burnt or discolored. Also it doesn't show any codes nor does any check engine lights come on. I have the temp gauge not the dummy light and it never showed the trans even getting close to getting hot. Can anyone tell me what is wrong with my trans? is there a bad solenoid causing this, is this an easy fix or am I in trouble and need to rebuild? Please help!