Hello Aloysiusokino, I have this exact same problem on my 2011 volt. I have also replaced the APM with one purchased from ebay but the "Service battery system" alarm remains together with all the symptoms you describe above.
I wanted to know if you did any soft configuration or programming after physically replacing the APM. I also do not have a service station here in Ghana and can only hope to get this fixed myself. Any helpful information will be appreciated.
Tony
I wanted to know if you did any soft configuration or programming after physically replacing the APM. I also do not have a service station here in Ghana and can only hope to get this fixed myself. Any helpful information will be appreciated.
Tony