CharliB

When starting the car up I have noticed a very distinctive clunk sound that seems to be coming from the front passenger seating area. Has not happened at initial cold start, only at startups when car has warmed up, and not necessarily every time. Both my service writers and salesman have heard this, but when the tech gets in and starts has not been able to duplicate. Also do not hear any thing rattling under when on a not so smooth road. Almost sounds like something in the drive train slipping like a u joint. Any idea what might cause this clunk?