Brought my 2 month old GT Auto in because it was making a rear end whine noise at 55 MPH and becoming louder. I got a call from the service department today telling me the differential gears were stripped and had to be rebuilt. I was initially relieved they found the cause of the whine but then became concerned how could this happen? The noise started at 1,100 miles and got worse. The service guy told me this happens from time to time!!?? I asked him how and he began to tell me it may have been "misaligned on the carrier" - that really made no sense.. He tells me it will be good as new when it's repaired - well I hope it's BETTER than new since "new" didn't last long. I've never heard of this repair and was hoping that some forum members might be able to provide some insight. Any thoughts appreciated..