Sunroof leaks during rainstorm saturating the interior of the vehicle. First discovered when opened rear door and found puddle of water in seat. After obtaining required corporate approval, the dealership replaced the sunroof, but it immediately leaked again within 18 hours of being returned to me. During 2nd trip to dealership, the dealership informed me that Ford corporate states that the leak is caused by the truck not being parked on a level surface during a rainstorm and "no additional repair attempts should be made to try to resolve the concern". According to the manufacturers installed instrumentation in the truck, it shows that the truck is parked at a 3 degree incline, engine high, when the leak occurs. I am now forced to carry a tarp inside the truck to protect anyone or anything of value that I might have inside the vehicle if by chance I encounter a rainstorm and cannot get the truck to a level surface to avoid the rain.