The governor is located in the tailhousing of the KM148. The xfercase and the tailhousing will have to be removed to get to it. It can stick, and cause erratic shifting. They can be cleaned, but they can also wearout. If I didn't do this alot, I would say for most of you, I would get a new one if available. Unless you like to R&R your xfercase for fun. If you decide to clean out your valve body, Make sure you buy all valve body gaskets required. I would also recommend having a manual easily available. FSM or ASTG manuals.