Fluid was very clean.Drained and filled to see if it would help ,same results.Then flushed with 16 quarts of fluid and still no help.I was told that a drum inside the trans might have a crack in it that will be my next step if I dont here any different.

2002 xc70 chatters(slips) in reverse only when warm.You can also here a slight whine after the car has been driven awhile.110,000 miles.Thanks,Guy.