Where can I locate new differential bearings for the 09G? Are thay available separatly or do I need to buy the diff/pinion shaft as a set. Wife's 03 NBC has a growling bearing on the drivers side right where the axleshaft leaves the trans. No metal in the pan, no slipping, and believe it or not no VB issues(yet.....). Just a loud bearing on that one side. If you stop the FT/LT tire the noise stops, if you hold the right side you can hear it. I have the trans out and split on the bench The ring and pinion look beautiful, no unsual marks or wear. The spiders look ok. Any help would be greatly appreciated.