Door rattle

[flacc]

My car has developed a door rattle on the drivers side on very irregular occasions.  I'm fairly certain it's not the window glides as if I hold the door down it stops the rattle.  A buddy suggested it must be the striker plate (part # 72-2030).  He said they can get worn.  There is a rubber gasket inside into which a metal pin from the door slides.  Has anyone experienced this problem and perhaps this simple fix?  The part is (of course) not cheap so I hate to order it without some input from the respected wizards here.

[psmith]

Check the screw hiding under the armrest that helps hold the door panel to the door. 

[mdsalemi]

flacc,

Does this happen with the window up or down or doesn't it matter?

On my car, the bottom of the window mechanism was touching the bottom of the door--or darn close to it.  Going over a bump or rough pavement made a metal on metal contact.  A window adjustment, and some cushion on the bottom of the door solved the issue.

Try isolating precisely when the rattle occurs and the conditions that may exist.