My speaker on the driver side behind the rear seats is rattling. How do I fix this? It stops when I put my hand on it

 

what year car?
you should put it in your sig

I believe you were the guy looking for exhaust for a 2003 (could be wrong here)

Fixing that rattle the right way is a lot of work

The speaker grill is attached to the package tray.

The package tray is attached to the rear deck with a bunch of tension pins (not sure of correct name) anyway removing the package tray will most likely cause many of them to tear out from the cardboard tray. - which sucks

Anyway the short easy method is to wedge something between the speaker grill base and the package tray. Fold of some thin stiff cardboard (like a playing card) and wedge that in there and see if that does the trick (it will) cause the other method is way too much work.

 

Without knowing the year we cant give specific advise.

But I use foam weatherstripping to eliminate rattles, but it between the two hard surfaces.

 

It's a 2003 lx

 

have you removed the grills to verify? sometimes the third brake light rattles against the glass. i wedge some foam in there. foam is your friend.

 

Yea i got some large washers and put them between the nuts and under the rear deck so I could tighten the 3rd Brake light down much tighter than the way the factory setup was.