I was traveling [XXX] near Liverpool, PA at 60mph, the truck flashed a quick code on the dash and then suddenly downshifted from 6th gear to 1st almost spinning the truck as the rear wheels locked up momentarily. It would not upshift past 3rd gear and had to travel 35 miles home like that. I called my local Ford dealer (Parsons) and they said bring the truck in for diagnostic testing, so I did. Meanwhile I searched the internet to see if others had the issue. Turns out they did, BUT my 2015 with the 6R80 was NOT in the recall notice. Ford said it was the lead frame and needed to be replaced. IF it was a known problem, why not inform owners of these trucks. That said, Ford wanted $1500 to fix it, BUT they did not have the part. So I drove the truck (never with my family in it ever again) after I cleared the code with my reader…again traveling [XXX] @ 75mph it downshifted IN TRAFFIC. Luckily I was in the right lane and made a quick move to the shoulder to avoid being run over. In Carlisle, PA there are hundreds of trucking companies and warehouses, so the truck traffic is very heavy. That was it. I searched out the part, paid for it myself and had a Ford mechanic that ds work on the side fix the truck. I have been a loyal Ford guy for over 30 years…I reached out to Ford via telephone, chat and even Facebook. All they say is it is NOT under any recall. Hard to swallow that when I am driving a $75K truck THEY built and they will NOT stand behind a $2K fix. Well goodbye Ford, as a business owner for over 25 years. If I make an error I fix it NO MATTER what. I gave Ford the opportunity to stand behind truck and they did…JUST FAR behind it and passed me as I sit on the shoulder of the road. This in my opinion INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)