2005 Jeep Cherokee Front Suspension

I hear what sounds like the front suspension is loose over washboard roads and certain small hoes. I have had both Jeep and Firestone look at it and nothing. Jeep found a worn out bushing on the axle. They changed them all out but the sound remains. I have been looking around on the Internet and have seen some people saying it was their swaybar bolts that wore out in an oval shape. Note: there is no play in the steering wheel when I hit these bumps just the awful sound of something loose. Any help would be appreciated. SSgt Manwell