The quick response from GM is encouraging,
I said earlier that they'd be all over this as it was a potential fire issue, (if one or two were to have caught on fire the press would have a field day).
Not taking any chances by flat-bedding back to the shop for the fix is probably prudent on their part, though it's going to be very embarrassing as your neighbors see your baby being towed away so most I suspect will just drive to the shop,