My truck while driving will downshift into 1st gear. There are no warnings before hand. This puts me and other drivers in harms way. This has happened 4-5 times previously and then it has happened 2 this past week. When it happens my truck just stops and because my foot is on the gas the engine will rev until I put my foot on the brake. I have been very fortunate that no one has rear ended me. I do have an appt with my Ford Dealership for this coming Tuesday. At this point Iam afraid to drive it until this matter has been taken care of. I have read where there was a recall on the 2014 F150 for the same thing. Iam not sure what else you need from me at this time. Also it usually happens when I driving between 40-50mph, but this last time I was going 35mph.