The dealer finally admitted what the problem is. If I remember the name right it is called Positice Vehicle Control It is the computer trying to help you drive the truck.
For example if the computer detects that the road is slanted to the right it will put pressure on the wheel to torn left...
It is virtually impossible to drive straight down the road. When I need to make a slight steering correction at times the steering stiffens up and the wheel is very hard to turn. It is pushing back against the direction I need to turn it. ‘At low speeds this is not a problem. It kicks in...