I have a 2007 expedition max and 95% of the time it works great. My only issue is when backing my boat up my driveway, the truck begins to shake and nearly stall. My driveway has a slight incline. All of my gauges are reading normal whenever this happens also doesn't pop a fault code. I never have issues backing my boat into the water or pulling it back out. Never an issue towing my boat at highway speeds or any other speed. Has this ever happened to anyone else?