I have a 2012 Fleetwood Expedition built on a Freightliner XCM Chassis. With about 5K miles on it I started noticing a clunk clunk sound coming from what sounds like the passanger side. The noise is more prevalent at slow speeds, like when slowing to pull into a rest stop, or driving across the parking areas. I've told Freightliner service about the noise, but everytime they have the unit they tell me they can't recreate it. They tightened the upper bolts holding the shocks in order to get the bracket to squeeze on the bushing tube on the shock thinking it may be moving up and down. I haven't had it jacked up in the front to shake the wheel to see if a wheel bearing is loose myself. There are no bearing oil leaks so I'm figuriing the bearing are set up properly. If they were loose the seal would be getting beat up and a leak would occur. Has anyone experienced this issue, and if so what was the cause. I'd appreciate any help you can provided.