07 Classic, Bearing noise in 4wd not Auto 4wd

[molsonice02]

So I have a 2007 Silverado Classic with 205,000 kms, I had the normal transfer case input seal leaking, fluid never got low, in fact it was overfull. I repaired that issue and filled with new fluid. Now I went hunting a couple weeks ago and noticed a low growl, bearing type noise that sounds like left front mainly when turning left, or slowing down. It is only present in 4wd, it does not do it in Auto 4wd. So my question is, If I am reading about the auto T-case correctly, the actuator controls the torque and front diff is already locked when in auto or full 4wd, therefore my noise is likely coming from the transfer bearings. Is this a legitimate thought process? Thank you in advance.

[molsonice02]

Nobody at all has any input? lol