2024 GMC Sierra 2500HD Battery Size & Group
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Quick Answer
- BCI Group Size: Group 48 (Gasoline), Group 31 (Diesel, dual-battery setup)
- CCA Rating: 760-800 CCA (Gasoline), 800-900 CCA per battery (Diesel)
- Reserve Capacity: 130-150 minutes (Gasoline), 160-180 minutes per battery (Diesel)
- AGM vs. Flooded: AGM recommended for all 2024 Sierra 2500HD models, especially with start/stop technology or heavy accessory use. Flooded is acceptable for base gasoline models without start/stop.
- Terminal Layout: Top Post (SAE).
- Physical Dimensions:
- Group 48 (Gasoline): L: 12.06" x W: 6.88" x H: 7.50" (approximate)
- Group 31 (Diesel): L: 13.00" x W: 6.81" x H: 9.44" (approximate)
- Dual-Battery Setup: Yes, diesel models utilize a dual-battery setup for enhanced starting power and system stability.
Replacement Battery Options
When it's time to replace the battery in your 2024 GMC Sierra 2500HD, several reputable brands offer excellent choices. Always confirm the BCI group size and specifications match your vehicle's requirements.
- Interstate Batteries:
- Gasoline: Interstate MTZ-48/H6 (AGM), Interstate MTP-H6 (Flooded)
- Diesel: Interstate MTZ-31 (AGM), Interstate MTP-31 (Flooded)
- Optima Batteries:
- Gasoline: Optima H6 YellowTop (AGM)
- Diesel: Optima D31A YellowTop (AGM)
- DieHard Batteries:
- Gasoline: DieHard Platinum AGM Group 48
- Diesel: DieHard Platinum AGM Group 31
- Odyssey Batteries:
- Gasoline: Odyssey Extreme Series ODP-AGM48 H6
- Diesel: Odyssey Extreme Series ODP-AGM31
- ACDelco: (Often original equipment or direct replacement)
- Gasoline: ACDelco Gold 48AGM
- Diesel: ACDelco Gold 31AGM
AGM vs. Flooded — Which Does This Vehicle Need?
The 2024 GMC Sierra 2500HD, particularly models equipped with the 6.6L Duramax diesel engine or gasoline models with start/stop technology, significantly benefits from an AGM (Absorbent Glass Mat) battery.
AGM advantages:
- Higher power output: Crucial for starting high-compression diesel engines and powering the vehicle
More specs for the 2024 GMC Sierra 2500HD
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
2001 Sierra 2500HD
2002 Sierra 2500HD
2003 Sierra 2500HD
2004 Sierra 2500HD
2005 Sierra 2500HD
2006 Sierra 2500HD
Maintenance & repair guides
2024 GMC Sierra 2500HD Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-06-24.