Well, I finally got around to dynamatting the passenger door (didn't have time to do the driver's side), and I can certainly hear an improvement, but it seems clear now that the majority of the buzz I was hearing was coming from the door panel. When I push up against it with my arm/leg, the buzzing sound goes away. It does it at even low volumes, which is incredibly annoying. Anyone have a suggestions in terms of what can/should be done to fix this buzz? Should I apply dynamat to the backside of the door panel, or is there a better option? TIA!

 

I'm battling the same thing. For the time being, while you are still trying to figure out just exactly what is causing it, you can remedy the buzzing by leaving the push-pin near the area unclipped.

 

Thanks for the tip NA1NSX. FWIW, I finally got off my ass yesterday and seemingly got rid of the passenger side buzz/rattle. I had a little dynamat left over for the passenger side, and I basically applied it to the back of the door panel. I narrowed the vibrating/buzzing down to the very lower plastic part of the door panel, towards the rear of the car. When I pushed against that part with my hand, the buzzing stopped.

So, to fix it, basically I just applied some moderately sized pieces of dynamat (about 2, 1 foot by 6 inches or so pieces of dynamat). I also duct taped a little plastic piece that looked like it could rattle a little, and even tightened all the philips screws on the back of the door panel to make sure the separate pieces were tight against each other. Be liberal with securing anything you think might be rattling is what I did (used good old duct tape).

The result is that the sound is seemingly gone now. I'll report back if the sound comes back, but the chunks of dynamat on the door should certainly help dissipate any sound/vibrations. Now I just need to get around to dynamatting the driver's side door (although at least there's no vibrations/buzzing coming from the driver's side). Hope that helps.

 

I have the same buzz. Good to know how you fixed it!