I have a 2013 Volt. Yesterday while my wife was driving the car, the fan system suddenly went to full blast and all controls for the fan went dead. The car still ran. My wife drove the car into the garage and called me out before turning the car off. The fan controls on the right side of the centre stack did nothing. The controls that come up on the screen when you press the "Climate" button also did nothing. In fact, they were dimmed. There was no control over where you wanted the heat to go -- e.g.: feet, windshield, etc. I could adjust the temperature up or down. I turned the car off and then restarted and everything was fine. The controls that had been dimmed, were back to normal. This morning everything appeared normal when my wife left on an errand. My advisor at the dealership has heard nothing about such an issue. Has anyone else experienced this or anything similar?