grab impact gun (675 ft.lb.tq, 21 gal air compressor, with 100 psi at the gun, thats what i used 2-3 weeks ago)
and blast that baby, she'll break lose, have someone hold pulley, keep it from turning, make sure you use a impact socket, regular socket will break (trust me)
that dont work,,,,,take it to your local auto repair shop,,,,,,or to your local dealer
next time do a search, saves everyone time