The contact owns a 2014 Ford F-150. The contact stated while driving 75 MPH, the vehicle unintendedly decelerated to 45 MPH. The contact stated that the vehicle also hesitated while driving. The contact stated that the transmission unexpectedly downshifted without warning. The contact stated that the vehicle was pulling and decelerating unintendedly. There were no warning lights illuminated. The contact stated that the failure was related to NHTSA Campaign Number: 24V444000 (Power Train). The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was unknown.