You hit a few too many of those nasty bumps during your commute on the roughest roads ever, and you can tell there is a problem. Unless you are mistaken, you need to find a Chevrolet Suburban rear end to replace yours, quick. The rear axle assembly holds a whole host of parts that can go belly up with rough roads, the main one being the rear axle itself. Connected to that are the drum brakes for each wheel, the differential, and gears. If one or more of those parts fail, then you need to replace them. Grinding noises or jolting when gears shift are both big indicators that something is wrong in the rear end, and it may take some troubleshooting to narrow down which parts need fixing. If it has all gone at the same time, however, then you really are better off just replacing the entire Chevrolet Suburban rear end assembly. With the vast inventory on eBay, you can find exactly what you need to both diagnose and to repair the problem before it gets any worse.Shop the large inventory of car and truck parts and other differentials and parts for Chevrolet!