its more than likely a bushing that gave out.. that happened to mine and it created a knocking sound when going over bumps and stopping.. i ended up finding the place it was doing it. and it will probably be the upper knuckle arm bushing. i just we ahead and replaced all the bushings in my suspension with energy suspension bushings which were a great upgrade since it tigtened up my whole suspension and its such an upgrade that it feels like i have new struts and the comfort level is much more pleasing. but i warn you replaceing bushings is not a fun thing to do and it is costly to pay someone else to do it.. the kit itself is not expensive, but the labor will cost alot.