Tell them to do that bulletin. It's the felt in the dash stuff. It totally took away the rattle in my dash!!
They tell me they did the service bulletin but that didn't solve the problem. Very vexing. I paid around $45k for this car fully loaded, and I expect better. Heck, they sell these cars on being quiet! From what I've been told, this is a common problem with this new body style. Not good...