05 Grand Cherokee - knocking noise
 

As mentioned in previous post I have a another issue I would appreciate some help with. There is a knocking noise from the front suspension area when I travel over a bumpy road or hit a hole in the road. Had a local Pit Stop dealer look it over and they could not find any play or obvious reason. Doesn't happen all the time but is so annoying as I know something is not right. Appreciate any help.