One problem related to tail light switch has been reported for the 2013 Chevrolet Volt. The most recently reported issues are listed below.
My Volt rear tail light is full of water. Dealer told me nothing they can do. This car has never been hit, bumped, or even been into a car wash. Feel this is a manufacturing defect and I cannot get anyone to listen to me. I see a lot of people on line having the same problem.