[Fyodor]

Hi kindly help, my Chevrolet volt 2013 battery is not charging. I have replaced the 12volts battery buy it keeps shutting down even if I jump start it it doesn't get charged. The dashboard dtc shows service battery charging system. The volt is out of the coverage of onstar so they cant run checks. Please advice if there is anything I need to reset.

Could you please clarify which battery you are talking about? What is the exact message? It sounds to me like you may be talking about the main (traction) battery, which is a quite different problem than the 12v battery.