Ford F-150 Brake Grab

My Father's Truck Was In Storage For 2 Years. When I Retrieved It, I Had The Ford Dealership Check It And Put It In Running Condition....

Brakes Grab And Lock Up Wheels When At Very Low Speed 5 To 10 Miles Per Hour

When I Put On Brakes They Grab And Make A Loud Grinding/squealing Noise On The Front. I Have Changed The Pads And The Rotors Look Ok....

I Replaced The Hose And Bled That Side. Pads Were Still Like New. Rotor Was In Good Condition. (do I Need To Bleed The Entire System? I Didn...