While waiting at a stoplight, X is in neutral I heard what sounds like something might be loose like rattling or maybe or a light grinding noise. Light turns green I put the clutch in and the sound seems to go away. Get home and the same thing. The sound seems to come and go. I plan to take it to the dealer next week but would like some ideas when I go in. I know that several people have had problems with their clutches, I am about 36,500 miles now. Does this sound like a clutch or input shaft bearing or ????