When I let off the gas and the car is in gear there will be a horrible noise coming from the rear end it sounds like, almost like gears grinding in the rear diff. Today i check the rear diff. fluid and and seems all good(proper amount/clean), the sound is like a hard grinding but not like gears grinding(really hard to explain). but i did research for it and nothing sounded like the same prob im having, so any help be nice.
I'm having a very similar problem but my car is not under warranty. When i let off of the gas there is a fairly loud grinding noise in the rear. I also have check the oil and its good. Please let me know if you have any suggestions.