[AntD77]

Thank you so much for the advice! There is a clunking sound coming from the rear of the vehicle when slowing to a stop or making turns. I have already ordered the new transfer case actuator, transfer case fluid and rear diff fluid from FCP Euro. I will disconnect the battery and let it sit, then reconnect it and go lock-to-lock with the steering wheel to recalibrate the sensor.

Yes, there are lights on the dash. The brake light, 4x4 light, and check engine light are all on.