not sure, but i do know my girl will moan every once in a while. she tells me new things daily.

driving down the road hear a metalic pop noise from the back, liek "wtf was that?" but she still handles like normal. guess ol' girl wasnt used to being drivin the way she was suppose to

as far as yours goes, look underneath, shake from underneath, find out exactly whats making the noise (have friends help if need be) then post here if you cant figure out what some item is