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Isn't there any shop left who can rebuild them? Maybe just bad bearings? Or - did the rotor hit the stator and damage it?
Probably splitting hairs with this suggestion, and certainly not cheap, but there's always Tuff Stuff Performance.
Rotor was hitting the stator unfurtunately.
That is the one my local Napa said they cannot get as a warranty replacement.
No but I think I figured it out, talked with the store manager at my local store, should have one tomorrow. Looks like NAPA changed the part number and line code on the unit. This unit shows to fit all the same stuff and pulled up in the search results when I searched the 1N-4812-HO number. It is an AD244 200 amp with a 4 pin regulator.
I re-read your post and completely missed the number change. Mine was a NNE 1N-4812-HO. Looks like the same unit as the new number you gave. I was giving them the old number and the new number was not interchanging nor is it listed for a 2003 Tahoe application. It is listed for everything else though. Weird.
