Thanks. I want to point out that the information regarding OnStar seems to be incorrect. I have left my car at the airport multiple times in the past for 4, 5, 6 days at a time and was always able to use the precondition feature via the OnStar app before I got back to the car. Even on this present trip with the car experiencing an issue I was still always able to check the status of the car and see the charge level, tire pressures, etc. across the entire 10 day trip so it seems like OnStar remains active and able to communicate in my car far beyond the stated 48-hour period.
Since the car wouldn't go to READY even when I was sitting in it I don't think the issue had anything to do with OnStar sending the command. It looks like the car just wouldn't start whether it was with the key or the OnStar app.
I took the car to the dealer this morning and asked the to go ahead and do the TSB for the remote receiver module since I have had the issue with "Key not present" in the past. They ordered the part for that. For the main issue they just called me and told me that the car is so new they aren't familiar with the codes, etc. and have emailed GM or the Volt group or something and are waiting a response back to determine what the next steps are.