Transmission Gear Slipping problems of the 2010 Ford Expedition

Transmission severely slips when downshifting from overdrive. . . Only happens after driving for 2 or more hours. Have had it in 3 times, but dealer only would document it once. The first 2 times, they said the car was still breaking in and that it would settle in after a few more thousand miles. The 3rd time the dealer hooked up equipment and drove it for 5 min, returned and said no problem found. I filed complaint with Ford. They called dealer, called me back and said there was no problem. I have a $50k vehicle that can only be driven on short trips. It is very dangerous since it slips and then catches so badly that it feels like someone is literally running into the back of the vehicle. (basically the trans is slipping, but it is tearing up the u joints, and other components as it slips and catches) it would hit so hard when it catches that it would wake up the kids on our trip to FL (1100 miles each way) every time the cruise control would try to maintain speed on any incline. Looks like all the media around Ford finally having quality vehicles and having changed to a true customer service oriented company are false. If NHTSA can't assist, then once I can get it paid down enough to break even, I'll trade it in on a suburban or Toyota. I'm done with Ford. . . Don't take your chances, buy something else.

I own a 2010 Ford Expedition v8 with 9000miles on it. I was pulling out into traffic making a left hand turn from a stop. While giving the truck gas the transmission started jumping gears and slipping while other vehicles slammed on their brakes. The truck has been into shop 9 times in 8 months for transmissions issues. The transmission issues have occurred several times and problem is not being addressed by the manufacturer. The transmission has been worked on several times and at this point I afraid to put my family in this truck.