Differential Repairs

How much work the mechanic has to do to repair the differential depends on what damage has been done already. In some cases, it is just a fluid change, which can take as little as 30 minutes. Other times, entire pieces of the differential will need to be replaced, which can take hours. The severity of the complications if the rear differential goes out while driving with a bad pinion bearing will depend on the problem and the vehicle. In the case of chipped or broken gear teeth, there may a vibration or skip in power. Multiple broken teeth will likely cause thunks and rattling sounds.

What are the signs of a bad rear differential?