THANK YOU for your thoughts. I forgot to mention the A/C thing we’ve ruled out (no difference on or off). The MOST dramatic difference was when we lubricated the clutch fan (before replacing it), but since replacing it - still squealing. The squeal has gotten worse as we’ve replaced parts (I believe now with all the new parts whatever is still wrong, is only being pulled harder/tighter on).
I will try the water thing. Have you any suspicion where this bad bearing may be? The squeal seems to be coming from the very middle near the front.
Yes, this has been an expensive, but more so time consuming ordeal only to still have a Tahoe that’s beautiful, but is embarrassingly loud.
Again, thank you for your input!!!