its not stop driving situation    just plan on a weekend project     take them out and get a buddy to get them pressed out and back in

    In response to raycow 

I had a very annoying squeak in my right rear suspension and I couldn't figure out where it was coming from either, just that it was right hand side. It turned out to be flogged out rear upper control arm ( bar) bushings. 

Both ends were flogged out but this one was the worst.