skip900

I bought this 470 in 2003 with 6k on it. About 6 mths ago I noticed a squeak/clunk/rattle coming from my right undercarriage when going over moderately choppy road conditions. My dealer has checked the e-brake, and almost everthing else, but nothing. My gut tells me its a broken/malfunctioning shock. I'm dumbfounded. Any suggestions. Thanks.