No idea. She cruises, no burnouts or stoplight drags. We heard a noise start in the back a few months ago. Sounded like a wheel bearing to me. I took it to a local shop who pulled the fill plug on the differential housing as part of the diagnosis process and found a lot of shrapnel. Took it to a specialty shop who took it apart and found this mess. New ring and pinion, new carrier, basically salvaging the axles and little else.how did she do that? Just driving along and?