I’ve had this squealing noise coming from the front right side of my truck. Seems to get progressively worse as the truck warms up and whenever I turn the vehicle. Sounds like a high pitched whistle....I replaced the wheel bearings, no change. I replaced both half shafts and changed the diff fluid, no change. On a side not( why are the ends of these half shafts nearest the wheel on the bottom slightly exposed?) I’m thinking power steering at this point.....steering does not seem stiff or anything.....any help would be appreciated....