when i drive my 05 ss when ever i drive and let go of the gas the car makes a wierd sound that is very loud almost sounds like grinding but not quite it also makes the same sound when im on the highway at a constant speed my car got 156k on it with the original clutch it makes the a less intense sound when i and rolling at a faster speed but its louder with clutch engaged i thinking its jus cause the clutch on it way any thoughts or wheel bearing it also makes this loud thump sound when i go over bumps