Thank you all. I ordered the icarsoft i909. Might have it by Thursday. I would probably end up needing it for Raspberry anyway in the future.
Is it possible that the dealer is just incompetent, considering they only sold maybe 4 of these cars since 2012?
We live in commuter town to D.C.. The Chevy dealer here won't even carry and sell a Bolt. They are so backward.
I would try checking the 12V battery under load, but it's new, dated 1/18 and has full charge, and it appears there is no draw on it anyway when I try to go to ready. I'm not ignoring your ideas and suggestions kiev, I really appreciate them, just based on my experiences with 12V batteries, it's not that. I could just switch 12V batteries from Raspberry to Silver and see what happens. At this point, I'll just wait for the i909 and see what happens then.