My 2013 Volt is up to date for all recalls and battery balancing. I've been getting the propulsion reduced messages five times over the last two months. It only happens when the battery is exhausted and I've been driving on gas for a while. I'll shut up the motor off wait about a half hour and then the error message appears whenI restart. The first time it happened, I couldn't drive any faster than 30 mph for the first 10 minutes. Then the motor ran enough to recharge the battery and I drove home normally under gas power. Lately the message comes up and the gas motor runs like mad and the message usually goes away in about two minutes. So I took the car to my local Chevy dealer and they could find no error codes and said they could not reproduce the problem. So I took it to another Chevy dealer, and they could not find any error codes or reproduce the problem. They said they did some reprogramming and gave me a printout from GM which said that occasionally this error message happens but usually if the car has been subjected to extremes of weather or if the car is going up a mountain. I live in Florida so I don't encounter too many mountains. So old I guess I'll just have to wait until the car completely stops before GM and my local Chevy dealer will do something about the issue. I'm still getting about 37 MPC but I think that the big battery may be losing some of its charge. Coolant levels are good. I've got 67,000 miles on the odometer. Ideas?