I received a recall notice on my F150 and took it to the dealership for repair even though I have not had any check engine lights or codes on my vehicle. 20 days After taking my vehicle to the ford dealership for the 24S37 recall on the OSS while driving on a two lane back road my truck experienced a hard downshift immediately followed by a check engine light. I lost all acceleration and had to coast to a safe place to pull over. I connected a code reader to the vehicle and immediately got a P0721 code for output speed sensor. I had the truck towed to the dealership and was told they drove it and could not get it to repeat the issue. The dealership only drove 2.9 miles while the had the vehicle for 5 days. I picked up the truck and drove 122 miles before the truck repeated the same issue only this time I was on the highway and luckily was able to exit the highway safely. I connected a code reader to the truck again and received a code for P0720 for the output speed sensor. The software update for this recall that FORD has pushed out as a repair has done nothing but cause even more substantial problems and safety concerns. I have reached out to Ford (at a manufacturer level) and have received absolutely no assistance from them.