I am trying to troubleshoot the issue I posted about in my other thread. I suspect this may be transfer case related. I have found that if I am on hard or gravel surfaces and lock the AWD with the lock button, and turn a semi tight circle at slow speed, there is an obvious noise that seems to come from the rear diff but that could be after effect of the transfer case clutches not working correctly. It may also me brake related, I am just not sure yet but I do not believe when the FX is in AWD lock on gravel it should have obvious noises.
If I invoke AWD lock in a straight line, I have no issues at all.
If I invoke AWD lock in a straight line, I have no issues at all.