Growling noise coming from front. Checked the CV joints and the r front was on 2002 Dodge Intrepid

loose. Replaced the cv joint and the same looseness is still there. Appears to be the shaft coming out of the transmission which has the movement. Transmission is fine, oil is good, and spoke to mechanic at Chrysler dealership who researched the problem and advised they have no reports of this problem. The noise goes away after a while and then returns. Does anybody have any ideas what might be causing this problem?

Asked by for the 2002 Dodge Intrepid