Clicking Noise rear end of camaro?

CLICKING SOUNDS CAN MEEN LOTS OF THANGS YOU COULD HAVE PICK UP SOME WIRE AND ITS D ARAOND SOMETHANG OR THE REREND MAYBE LOW ON OIL OR THE BRACKS COULD BE CRACKD THE BRACKDRUM MAY BE CRACKD YOUR UNAVERSALL JOINTS COULD BE GOING OUT THEARS JUST NO TELLING WHAT IT IS WITH OUT BEING THEAR AND HEARING IT FOR YOUR SELF.