I have that howling noise in the rear differential and it is getting pretty bad even on acceleration now. I had my warranty company take a look at it and they said they wont cover it until I pay a repair shop to tear it down and show the parts have a failure in some way. My question is will you be able to see if there is a failure to the parts that is making the howling noise? Or would I be wasting my money having a repair shop tear it down for the warranty company to take a look at it? Thanks - Tim