Just got my Volt last evening (I'll post some of the 2012 vs. 2011 changes I noticed in another thread). Drove it about 30 miles, charged it overnight with the 120v EVSE. Noticed a kind of a moderately loud, high pitched whine from the front of the car while it charged. Now, after charger unplugged, I still hear this whine when parked with the power on. I can only hear it outside the car, not from inside.
https://skydrive.live.com/redir.aspx...03BE4E82E2!102 has a small MP3 recording of the sound. Is this normal?