GMC Sierra 2500HD Battery Size by Year
The 2024-2026 GMC Sierra 2500HD uses a BCI Group 94R AGM battery. 2020-2023 models use a BCI Group 94R battery; 2019 models use a BCI Group 94R AGM battery.
Battery by model year
| Model years | Battery | Type | CCA | Buy |
|---|---|---|---|---|
| 2024-2026 | Group 94R (some use 48) | AGM | 730 | Shop Group 94R |
| 2020-2023 | Group 94R (some use 48) | Flooded | 720-730 | Shop Group 94R |
| 2019 | Group 94R (some use 48) | AGM | 730 | Shop Group 94R |
Match the group and type on the battery you are removing. Shop links go to Amazon, and we may earn a commission at no extra cost to you. Open your exact year below for CCA, terminals and our sources.
Every Sierra 2500HD year
Choose your model year for the exact Group size, CCA, terminal layout, and the right replacement for your GMC Sierra 2500HD.
Sources. The battery size for 8 of 8 model years is checked against a cited source, most often GM OE Battery Ratings 2019-2022 (TechLink), GM OE Battery Ratings 2023 (TechLink) and GM OE Battery Ratings 2025 (TechLink). Each year page lists its own sources.
Last verified 2026-09-23. Maintained by Matan B., who runs GarageDex. How we verify.