This week my 2013 272k miles developed a clicking noise. Slow speed, cyclical related to speed, not in sync with wheel rotation. It’s a little faster. Gets harder to hear above 20 mph. Louder when torque applied/accerlerating. Had someone check out the u-joints but they are solid. Sounds like it’s coming more from the rear. I noticed today that I can hear it coasting but it will stop if I pop it in neutral while still moving. Definitely drive related but don’t know where. Wondering if the diff lock isn’t completely disengaging? Suggestions?