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Hello, if the noise goes away if you shift it into 4x4 high while driving it is an issue with one of the front 4x4 actuators at the wheel end left or right. When in***** vacuum is applied to the front hubs to disengage the front halfshafts. In 4x4 vacuum is removed and the actuators release and allow the axles to lock into 4x4. Its a live front axle. The vacuum actuators get hard and stick over time and cause the front axles to grind usually on a turn or driving at different speeds. Common issue with these or an issue with the solenoid that regulates vacuum which if failed would be in 4x4 all the time.Replacing the front wheel end vacuum actuator would resolve this issue
Hello, do you need more help or information?