2015 Chevrolet Silverado 1500: Battery Size & Specs
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Quick answer
- BCI Group Size: H6 / Group 48
- Cold Cranking Amps (CCA): 615-730 CCA
- Reserve Capacity (RC): 120-140 minutes
- Battery Type: AGM (Absorbent Glass Mat) recommended
- Terminal Layout: Top Post
- Dimensions (LxWxH): 12.1 x 6.9 x 7.5 inches
Replacement battery options
- ACDelco: Gold H6AGM
- DieHard: Platinum AGM H6
- Interstate: MTX-48/H6
- Optima: Yellowtop DH6
- Odyssey: ODP-AGM48 H6 L3
AGM vs flooded — which does this vehicle need?
The 2015 Chevrolet Silverado 1500 comes from the factory with an AGM (Absorbent Glass Mat) battery. This is due to the increased electrical demands of the vehicle, including the start-stop system (if equipped), infotainment, and other electronic modules. You should always replace the AGM battery with another AGM battery to ensure proper performance and longevity. Using a conventional flooded battery can lead to premature failure and electrical issues.
Post-installation relearn / reset procedure
After replacing the battery in your 2015 Silverado 1500, the vehicle's Battery Sensor Module (BSM) needs to be reset. This allows the system to recognize the new battery and adjust the charging strategy accordingly. The reset procedure is as follows:
- Turn the ignition off.
- Disconnect the negative battery cable.
- Connect a multimeter between the negative battery cable and the negative battery post.
- Set the multimeter to the DC amps setting.
- Turn the ignition on (engine off).
- The multimeter should read less than 2.5 amps.
- If the reading is above 2.5 amps, wait for the vehicle to go into "sleep mode." This can take up to 45 minutes.
- Once the reading is below 2.5 amps, the BSM is reset.
- Turn the ignition off.
- Reconnect the negative battery cable.
Signs of a failing battery
- Slow engine crank
- Dimming headlights, especially at startup
- Warning lights on the dash (battery, check engine)
- Corrosion around the battery terminals
- Swollen or bloated battery case
Common battery issues for this generation
The 2014-2018 generation of Silverado 1500s are known for a few battery-related issues:
- Parasitic Drain: Some owners have reported a parasitic drain on the battery, causing it to die prematurely. This can be caused by a number of factors, including a faulty BSM, a malfunctioning infotainment system, or a short in the wiring.
- BSM Issues: The Battery Sensor Module can sometimes fail, leading to improper charging and a shortened battery life.
- Corrosion: As with any vehicle, corrosion around the battery terminals can cause a poor connection and prevent the battery from charging properly.
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More specs for the 2015 Chevrolet Silverado 1500
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
2014 Silverado 1500
2016 Silverado 1500
2017 Silverado 1500
2018 Silverado 1500
2019 Silverado 1500
2020 Silverado 1500
Maintenance & repair guides
2015 Chevrolet Silverado 1500 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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