Good luck with this sunroof rattle. My Grand Cherokee started rattling at about 1,000 miles in the exact same spot - on the passenger side right behind my head. It evidently cannot be fixed. I have owned the car for basically 5 months. It has been in the shop for 25 - 30 days trying to fix. The service has been horrible. Every time I take it in, there is a discussion about how Jeep will only pay for 5 days worth of rental, because I would prefer they just keep it until it is fixed. This is not going to happen. Service has been terrible.
A Chrysler engineer was here at the end of January to take a look at it. When I got it back, it was worse than ever. I actually thought the sun roof was open when I got on to the freeway.
All I can say is good luck. It is not a pleasant experience. And, the longer I am forced to endure the continual rattle, rattle, rattle - the more I hate it.