When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Honestly this is a little off what you guys are talking about....but in my 98 GT the center vents rattled a bit, and I traced it to vibration from the car at highway speeds which turned into u-joints. I replaced the u-joints and the vibration was gone. Who knows though