I have a 2001 gmc jimmy, and hit a pot hole. After hitting the pot hole, I heard a clanging on the ground and fear this square washer and something else may have fallen off or broken off. I am unable to post a pic at the moment, but it is 2inch x 2inch. The front end has always been a little clunky, but it may be even more so now.

 

Make a account at photobucket or imageshack.us and post a picture so we can help..