Well, well, well . . . Some good news.
Service technician at dealership says both batteries are now at end of life. They pulled both and ran them thru their testing machine. Plus, the tech says that the messages I've seen are one of several that can show up with low voltage. No explanation why the truck doesn't just show me a low battery warning. I provided a 40 second video of the dash durning start up this morning when the message showed up. They appricated that.
So tomorrow I'm off on a mission. To find two, new batteries.
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