it's not my suspension, but it's only when I go over bumps, like a unoiled spring somewhere but I can't find it and it's driving me CRAZY!
Actually, come to think of it the dealer did correct something like this for me, I had a noise from the back of my car & they put a new part on the mcph/shock mounts to eliminate vibration...there was a dealer memo about it. Here is the dealer info that will help you.
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Owner states rattle/noise from the rear of veh over bumps, s/o part here.
Cause: Rattle from upper shock mount.
#3352632 replace both mounts for Rear Mcpherson struts/shock abs.
340 WBMW
1 33-52-6-754-096 GUIDE SUPPORT
1 33-52-1-137-360 NUT
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This is the note on the service receipt, and it did solve a noise I had, the dealer was wonderful in helping me out, I would take your car in, they can at times narrow a problem down far quicker.
Good Luck !