Does it only happen when turning? Are you sure it isn't the power steering pump? Also, have you checked the fluid in the differentials and the transfer case?
On the back side of the transfer case, you will see two plugs. One is higher than the other. Remove the top one and the fluid should be to the top of the bottom threaded opening.
The best picture I could find of the fill plug is attached. Don't remove the lower plug. It is a drain. I circled the plug to check. It requires a 3/8" ratchet to remove. I always put an extension on the ratchet to make it easier.
If you remove the front differential fill hole plug, it is full based on the same principals.
Let me know what you find.
Joe
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Thursday, March 19th, 2020 AT 10:43 PM