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  1. 6

    Battery Replacement

    Hi Fellas. Sorry to "piggy-back" on your thread ... but it's relative, I think. I work at a rural NAPA store in Alberta Canada, and I have had a couple of calls from newer (2008+) Duramax owners. NAPA catalog lists #48-9AGM (BCI Group 48 Absorbed Glass Mat construction) which of course are...