GMC home charging: onboard AC limit for every model
2 GMC vehicles tracked. Each accepts between 19 kW and 19.2 kW of AC power from a home charger; a charger cannot push a car past its own onboard limit.
Every GMC vehicle in the database
| Vehicle | Model years | Charge port | Car's charging limit | Reaches it at | Full charge at 32 A | Full charge at 48 A |
|---|---|---|---|---|---|---|
| GMC Hummer EV | 2024 | J1772 | 19.2 kW (80 A) | 80 A | 24.5 to 26.3 h | 16.3 to 17.6 h |
| GMC Sierra EV | 2026 | Varies by year | 19 kW (79 A)computed | 80 A | 18.5 to 26.5 h | 12.4 to 17.6 h |
The onboard limit is the highest a family ships; trims with a smaller onboard charger are listed on each vehicle's page. Amps marked computed are kW divided by 240 volts because the maker publishes kW only. Full-charge times divide the EPA wall energy for a full charge, which includes charging losses, by the rate the car accepts at that current.
GMC home charging questions
- How fast can GMC vehicles charge at home?
- The 2 GMC vehicles tracked here accept between 19 kW and 19.2 kW of AC from a home charger: GMC Hummer EV 19.2 kW, GMC Sierra EV 19 kW.
- At what amps does each GMC vehicle reach its home charging limit?
- GMC Hummer EV: 80 A; GMC Sierra EV: 80 A. A charger rated above that figure adds nothing on that car; every number assumes 240 volts.
Prices and specifications verified October 26, 2026, and re-checked weekly after that. 2 GMC vehicles, every onboard AC limit verified against the manufacturer's own documentation or a named specification source. How these numbers are checked.
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