Dealer had it for 4 hours today, fixed a recall, under the drivers front seat and they said good to go.
Made it 10 miles and light back on. Can’t get it back in for a week, so I guess intermittent beeping and light on/off for the next week. Going on a little road trip this weekend but we won’t be taking the Tahoe. Not sure what else to do at this point, dealer is great but I hope it gets fixed.