I recently bought a 2004 Chevy Aveo. The people I bought from told me I needed to replace the thermostat housing-- a "friend" of ours said he knew how to do it, and it was a very easy fix....well shortly after he replaced the thermostat housing, I was driving home and my car over heated...the radiator hose is not getting hot either...I read on another forum that this can happen due to a bad thermostat (which can happen even being bought brand new...) Any help from anyone who knows a thing or two about this??