rattle

So I've noticed a bit of rattle coming from the sunroof wind deflector with some bass notes (sunroof closed). Kept hearing a rattle even after installing sound deadening everywhere. Finally traced it down to the wind deflector bar. When I reach up and pull the bar down the rattle stops...

So I took in my brand new 2014 CTS V wagon, bought just after new years, for a few small squeaks and rattles. Most audibly from the a-pillar passenger side and the driver side seat. I was also expriencing what I assumed was an exhaust hanger rattle. This morning I received a phone call from the...