Jeez! I wish the dealers would give owners more information on what's wrong with their car. That sounds like a pretty severe issue.Okay, so update...
The dealer called back after talking to the GM people. Apparently somehow the transmission and the electric motors are having a problem and causing things to overcharge. They are replacing the whole transmission unit! Not sure if that includes the electric motors too or what as I'm not that familiar with how all the Voltec pieces fit together. They said it was good I didn't keep driving it... kind of sounded like something bad could happen in that condition.
So... brand new car, 2600 miles on odometer. Transmission replacement. Making me rethink my change of heart with domestic cars that brought me over to the Volt in the first place.
I had to replace Battery Segment 3 on mine at 5k miles...I'm having the same second thoughts as you about buying a domestic car hopefully both our cars are fine from now on!