Just started having that problem on our 2010 Rubicon. We could tell the rattle was coming from somewhere in the back of the Jeep. I climbed in the back to search for the source of the noise while my husband kept driving down the road. I was able to pinpoint that it was coming from the back glass. The noise would stop when I pulled the glass tight from the inside and would start again when I let go. Will a latch adjustment solve our problem too?