The problem is the differential and the transmission housing are one thing. The differential is integral. Therefore, it would be hard for him to tell where the noise is coming from.
Please understand that it is hard for me since I'm not there. However, I feel it would be worth checking. If I'm wrong, the differential cover still needs to come off if the trans needs removed and repaired. All that will be lost is about 2 quarts of gear lube and a gasket + his labor if you have him replace the cover before repairs (if I'm wrong). Please understand, I can be wrong, but that is where I would start if the car was in my shop. I've seen many of them go bad. If the internals come apart, they could break the trans housing. Then, you'll get stuck buying a new transmission.
Thursday, February 10th, 2011 AT 3:15 AM