I am starting to get an AM belt squeal, so I am gonna change my belts. What I wanna know is are the belts the only thing that causes the squealing. The reason I ask is cuz in BMW's (I work for them) the belt tensioners also cause squealing when they go bad. I know our cars don't use tensioners, at least that's what the dealer told me when I went to buy them, but do our pulleys cause squealing as well. Or will I just be able to drop some new belts in and be good?