2022 GMC Sierra 2500HD: Battery Size & Specs
Your complete guide to the 2022 GMC Sierra 2500HD battery. We cover everything from group size and CCA to replacement options and reset procedures.
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Quick answer
- BCI Group Size: Group 48 (H6)
- Cold Cranking Amps (CCA): 760 CCA
- Reserve Capacity (RC): 120 minutes
- AGM vs Flooded: AGM Required
- Terminal Layout: Top Post, Right Positive
- Physical Dimensions (L x W x H): 11" x 7" x 7.5"
- Diesel models: Dual-battery setup, both are Group 48 (H6)
Replacement battery options
- Interstate: MTX-48/H6
- Optima: DH6 YELLOWTOP
- DieHard: Platinum AGM H6
- Odyssey: ODP-AGM48 H6 L3
- ACDelco: 48AGM
AGM vs flooded — which does this vehicle need?
The 2022 GMC Sierra 2500HD requires an Absorbent Glass Mat (AGM) battery. The increasing electrical demands of modern vehicles, from infotainment systems to advanced driver-assistance features, necessitate the stable power and vibration resistance that AGM batteries provide. Unlike traditional flooded lead-acid batteries, AGM batteries are spill-proof and can handle deeper discharge cycles, making them ideal for the start-stop technology and complex electronics found in the Sierra HD.
Post-installation relearn / reset procedure
After replacing the battery in your 2022 GMC Sierra 2500HD, a relearn procedure is necessary to ensure the Battery Management System (BMS) correctly charges the new battery. The BMS monitors the battery's state of charge and health, and without a reset, it may continue to charge the new battery as if it were the old, failing one. This can lead to overcharging or undercharging, significantly reducing the lifespan of your new battery. While some high-end scan tools can perform the reset, the simplest method is to leave the vehicle undisturbed for at least 2 hours after installing the new battery. This allows the BMS to recalibrate to the new battery's characteristics.
Signs of a failing battery
- Slow engine crank: The engine turns over sluggishly, especially in cold weather.
- Dimming lights: Headlights and interior lights may dim when you start the vehicle or use power windows.
- Warning lights: A battery or check engine light on the dashboard.
- Swollen battery case: The battery case appears bloated or deformed.
- Corrosion on terminals: A white, powdery substance around the battery terminals.
Common battery issues for this generation
The 2020-present generation of GMC Sierra HD trucks has a sophisticated electrical system that can be sensitive to battery health. The most common issue is premature battery failure due to the high electrical load from modern features and accessories. Additionally, the dual-battery setup in diesel models adds complexity. If one battery fails, it can strain the other, leading to a cascading failure. It is crucial to replace both batteries at the same time in diesel models to ensure proper performance and longevity.
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More specs for the 2022 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
2022 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 2026-08-14.