GMC uses ACDelco batteries for its traditional gas-powered and hybrid models, while its electric vehicles rely on GM’s Ultium battery system developed with LG Energy Solution.
ACDelco: The Battery Brand for Conventional GMC Vehicles
For most GMC vehicles with internal combustion engines or conventional hybrids, the original equipment battery is supplied by ACDelco, GM’s in-house parts brand. ACDelco covers a range of battery types and is commonly specified for OEM replacement parts across GM's lineup.
Before listing the details, it’s important to understand how the brand fits into GMC’s broader lineup and service network.
- ACDelco is GM’s official battery brand used across many GM vehicles, including GMC.
- The product lines include Gold, Silver, and Professional options tailored to different performance needs and OEM specifications.
- Both traditional lead-acid and AGM (absorbent glass mat) batteries may be used depending on the model and electrical requirements.
In short, if you’re replacing a battery on a GMC gas-powered model, ACDelco is the common OEM choice.
Ultium: The Battery System for GMC’s Electric Vehicles
GMC’s electric lineup, including the Hummer EV family, uses the Ultium battery system—GM’s modular, scalable platform designed for high energy density and versatile packaging. The Ultium cells are produced by Ultium Cells LLC, a joint venture between General Motors and LG Energy Solution, with the packs integrated into GMC vehicles through GM’s manufacturing and assembly processes.
Current GMC electric models using Ultium
As of 2026, GMC’s electric offerings center on the Hummer EV family. A broader Sierra EV is in development for future rollout, and those vehicles will also ride on the Ultium platform.
Before listing the models, note that Ultium is the backbone of GMC’s current and upcoming EV strategy, enabling larger packs and flexible configurations.
- Hummer EV Pickup uses the Ultium battery system for substantial range and performance.
- Hummer EV SUV also operates on Ultium cells, sharing the same modular platform.
- Sierra EV is planned for the future and is expected to adopt the Ultium system as part of GMC’s electrification push.
For GMC electric-vehicle buyers, Ultium represents the core technology powering range, charging, and performance across the brand’s EV lineup.
What this means for owners and buyers
Understanding GMC’s battery branding helps with maintenance, replacement parts, and long-term ownership. Gas-powered GMCs will typically require ACDelco batteries, while future and current EVs will rely on Ultium-based packs designed and supplied through GM’s partnership with LG Energy Solution.
Summary
GMC’s battery strategy is split by propulsion type. Conventional GMC models use ACDelco batteries, GM’s own aftermarket and OEM battery brand. Electric GMC models run on the Ultium battery system, developed with LG Energy Solution and produced by the GM-LGES Ultium Cells joint venture. This arrangement underpins GMC’s shift toward electrification while maintaining familiar brand partnerships for traditional powertrains.