Chevy Duramax 2500hd Battery Battery group optima Duramax 2500hd diesel Optima redtop automotive battery, group 75/25 OPTIMA RedTop Automotive Battery, Group 75/25 - Walmart.com OPTIMA RedTop Automotive Battery, Group 75/25 - Walmart.com Check Details Battery - 2015 Chevrolet 2500HD Diesel | Chevy and GMC Duramax Diesel Forum Check Details ← Duramax Battery Not Charging Duramax Coolant Flow Diagram → Share with friends Link copied