What is the rectangle piece by the pressure release?
There is a body cavity that is accessible only through the compartment where the jack is stored. When you remove the jack you'll see an access hole. In that hole is a pressure release gate (when you slam the doors). There is a rectangle plastic box that is open at one end and lined with foam. There are tabs on this box so that it fits over the pressure release gate. The dealers mechanic doesn't know what its for and I removed it because it was rattling around making noise. Any ideas if I need it? Thanks.