Lesson Learned...
Don't go cheap, nor try other "brand" electrical components for GM. Stick with AC Delco components. Crap-o-zone's alternators are garbage, and O'Crappy's are not much better. It's a shame that Crap-o-zone has no service individual that truly knows about auto parts & troubleshooting. Where are the ol'heads that truly work on cars.
Anyhow... end result of problem was alternator went bad. These alternators have more computer controlled and diag circuits that could fail internally, but not leave one disabled. I've had that code for months, but it finally decided not to charge anymore. Replaced it with a TRUE Delco part, and problem ceases to exist. Spent less than $200 (w/ a core swap).
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