rear leaf spring squeeks going over every bump. It's been looked at. any sugg

longer than 7 years.is it the bushings?

Spray/soak suspected components (one at a time) with WD-40 and then test drive each time!... May take a while but you can do this instead of paying to have it done!!... After locating problem 'area'...(noise stops).... Have a mechanic take a look at that area!