Noisy Demon trunk lid?

Remember what I said the spare tire holds the gas tank tight. The straps holding the tank are mounted to the brace on the bottom of the spare tire well. The long bolt for the spare tire pulls up on that brace using the spare as the support. That is why driving with a full tank of fuel without a spare fastened could cause the tank to drop. And if the well floor is rusted the tank falls out. Also check your top shock mounts in the trunk . Or it could be the tail pipe hitting the tank or the frame,