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  1. Generation 1 Chevy Volt (2011-2015)
    I own an Ampera and few months ago I upgraded HPCM2 and BECM modules with my SPS account. After I went from 9.6 to 8.6 kWh for a average distance of 30-37 miles. Now I want come back to the previous sw version and to do I need a VCI code. Anybody successfully obtained it from GM?
    becm downgrade hpcm2 sps vci
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