Certain 2014-2016 Model Year F-250 ? F-550 and 2016 Model Year F-650 - F-750 Vehicles, With 6.7L Diesel Engine - Crankcase Ventilation Oil Separator Assembly. Certain 2018 Model Year F-150 and 2019 Model Year F-250 through F-550 Superduty Vehicles Equipped with a Diesel Engine - Powertrain Control Module Reprogramming