Hi guy's, new member here and thought I would probe the masses on a problem I have been experiencing with my 2002 F150 ext. cab FX4 that has an intermitten violent shake that comes and goes. It seems to happen only on the highway speeds and it will shake the steering wheel violently and then subside. I had all the steering linkage checked and all seems to be fine. I have done a search and turned up a few responses of the the E-brake sticking and causing this. Would the E-brake cause the steering wheel to shake like this?