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Service battery charging system

17996 Views 25 Replies 10 Participants Last post by  profkwame
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.
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Thanks. How can I locate the 12volt AGM and it's plugs or cables? Is it the black negative cable on the battery terminal? Also is the AGM different from the APM?
The 12 volt AGM is the 12 volt battery in the back under the hatch floor. The APM is the Auxiliary Power Module. It takes the place of the alternator in an ICE car. There is NO alternator in a Volt.
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