Just in case this helps someone else. Had an incessant rattle in both front doors. Was a faint tapping with the windows up. Sound disappeared with the windows partially down or if I pulled or pushed on the panel while driving. This shouldn't be happening on a 1 month old car ('12 SE Base). I literally took off the panels over 20x taping, cramming, stuffing crevices. No dice.
Why didn't I take it to the dealer? After reading unsuccessful stories about the same issue on the web, I didn't feel my car was going to be an exception.
I realize this may not apply to every car with door rattles but it's inexpensive, completely reversible, and you don't have to take anything apart. On to the fix.
foam pad
I placed these pads on the door frame directly opposite the oem rubber pads (look like gum drops) on the door. The pads are more like dense foam than rubber. I placed 1 pad for each oem rubber pad (4 total). I drove around and still had a very faint tapping on the driver's side. I doubled up the upper pad and now it's nice and quiet. So try 1 pad each first and apply more if necessary. I don't think you would need more than 2.
Hope this helps at least one person.
Why didn't I take it to the dealer? After reading unsuccessful stories about the same issue on the web, I didn't feel my car was going to be an exception.
I realize this may not apply to every car with door rattles but it's inexpensive, completely reversible, and you don't have to take anything apart. On to the fix.
foam pad
I placed these pads on the door frame directly opposite the oem rubber pads (look like gum drops) on the door. The pads are more like dense foam than rubber. I placed 1 pad for each oem rubber pad (4 total). I drove around and still had a very faint tapping on the driver's side. I doubled up the upper pad and now it's nice and quiet. So try 1 pad each first and apply more if necessary. I don't think you would need more than 2.
Hope this helps at least one person.