I would first like to say I do not take credit for this fix. It was found searching old posts and thought it be nice to take the info found and make a nice easy guide.
This will be a quick and easy fix with pics I did on both of my doors. The rattling was driving me crazy and being I live in PA we have a lot of bumps.
I hope I did not over do the post.
parts needed are door striker bolts
AutoZone and Advance Auto are Dorman Help! #38421
AutoZone Advance AutoNapa brand #675-5138
Napa Auto Online 
Remove plastic and discard then replace washer
Reinstall and enjoy.
The rubber of the latch assembly shrinks with age and the ware down in the strike bolt causing the most hated rattle over bumps.
The larger diameter of the replacement bolt makes up for the rubber shrinking in the door latch stopping the rattles.
I hope this is found useful
Thanks
Jeff
------------------
85 SE 2m4 2.4 L4 5 speed
87 GT 2.8 V6 5 speed Gold and Gray with 94 FWD Cavalier 5 Speed
88 Formula CJB T-Top Project i think its going to stay Formula
ProjectPb for all for paintball needs check this out
