I'm chasing a rattle problem too. I took the panel off, and broke the top left plastic attatchment piece. The internet has good directions on how to do this, i just screwed it up. From the factory some of the wiring harness wasn't secured like it was designed to be, I found some of the securing plastic pieces attached to the wiring harness were clearly not in place. After taking it to the shop they found a window regulator needed to be repaired. I don't know what that is but they fixed it. However, that did not fix the rattle. I'm very frustrated. I hope some of this will help you. I would consider carefully taking the panel off, download direction from internet, it's pretty easy, just look to make sure all wires are in place and nothing is broken. You can't really get to the window area without cutting a slit through the dust seal that protects window assembly. I wouldn't anyway, just eliminate everything else. If it's the window, I would let the shop do it.