Is it in the front or the back? Mine did it in the back on both sides, and it was not the springs/struts but the sway bars or whatever those bars are called back there. After lubbing it down at least 5 times with WD-40 it seems to be happy. I jsut took it and sprayed everything that moved that had to do with the suspension (except strut/spring) and that seemed to do it after i did it a few times. maybe try that and go from there.
