What you want is to get the best-used transfer cases to drive a vehicle in the best medium. All you want is to hear from knowledgeable experts and replace them ASAP. All our auto parts are quality-tested to make it big. We have the largest network of used transfer cases at competitive prices. However, you should know the factors that create transfer case problems. A few are: 1) Weird sound 2) Complications in Gear Shift 3) 4 WD Light on 4) Don’t stay in 4WD or AWD.