Front End grinding noise on Limited

Hi all,

I have a 2012 with a grinding noise really noticable when moving about 8-10 mph from the front end. I see all of the items (TSB) for the 2wd4wd systems on the spindle bearing but nothing for the limited 4wd 'all of the time' system. Observation is when coasting 8-10 mph and putting the car in neatral, the sound minimizes to where I cant hear it. Also, when going in h4f to h4l (locked diff) the sound seems to go away. I think I can also hear it 30mph. No other sounds so I am baffled.

Anyone have ideas where to look or the order to troubleshoot? Thinking of fluid changes in the diff and transfer case to look for anything ususual shaving wise. CJ joint boots are good and wheel bearings are good. I did have the drive train lubed as well.

 

Did you ever figure out the issue? I may have the same issue