I have an irritating rattle/squeak located in/around the right hand ventilation vent in the dashboard.The noise could be caused by plastic rubbing on plastic in or around this vent. Every time the glove compartment door is opened, the noise is eliminated. When the door is reclosed, the noise returns. I've tried using some sealant tape in/around the lip of the glove compartment door. But that doesn't help. I can't seem to find it and I don't know how to easily remove the vent so that I can examine it. Any ideas on how to proceed to cure this problem.