Does anyone know where/who sells urethane upper, lower control arm bushings , and rear leaf spring bushings ?

 

GM Parts Direct carries everything at a decent price. The kinda get you for shipping though.

If your looking to replace the control arm bushings, I do believe that the upper arm bushing need to be pressed, you might be better off buying the entire part assembly.

 

Check Rockauto.com
Much better prices than any GM online place.
You can choose between AC Delco or aftermarket parts.