Among the 639 owner complaints naming this part, differential is named in 11% of them, more than any other part.
Other parts named in the same complaints. Differential: 11%; Driveshaft: 8%.
Owners name the differential most often in the same complaint, which is not proof that one caused the other. Ask the shop whether it checked the differential too, so you are not quoted twice for one visit.
Data and chart by CalcScrape: Transfer Case Repair