Re: 2001 WJ Knocking sound at the rear when going over mild bumps
You mentioned having Addco sway bars. I just added a rear one and had a knock immediately after I installed it. It turned out that the ends of the bar were hitting the sleeve inside the bushing of the sway bar end links on each side. I put a washer as a spacer on each side inbetween the sway bar and the endlink and the knocking is gone.
2004 Onyx Green Pearl Grand Cherokee Limited 4.7 H.O.
-Addco Rear Sway Bar