Picked up my Volt on Tuesday, Engine light came on Saturday. Called onstar they said it was 2 codes the engine propulsion system not working properly and the ion battery not working properly. When starting the car I would get a message (action required put in park) put it in push start again and it goes. When I got home it said charging not available. I turned the car off and the next time I started it powered up on first shift and was able to see the charge settings. Going back to the dealer on Tuesday but wtf.