How long to charge a GMC Sierra EV at home
Typical trim (SIERRA EV Ext Range (19kW Charger)): 52.4 kWh/100 mi · EPA range 385 mi · on a 48 A (11.5 kW) charger about 22 mi of range per hour*
EPA lists a 240 V full-charge time of 11.5 h for this trim, which implies an average of roughly 17.5 kW (our estimate, = 202 kWh ÷ 11.5 h). Chargers well above that are unlikely to charge this car faster on AC; check the owner's manual for the onboard charger rating.
Range added by charger size (typical trim)
| Charger | Range per hour | Per 8-hour night | Empty to full EPA range |
|---|---|---|---|
| 12 A at 120 V (Level 1 cord) (1.4 kW) | 3 mi | 22 mi | 140.1 h |
| 16 A at 240 V (3.8 kW) | 7 mi | 59 mi | 52.5 h |
| 24 A at 240 V (5.8 kW) | 11 mi | 88 mi | 35.0 h |
| 32 A at 240 V (7.7 kW) | 15 mi | 117 mi | 26.3 h |
| 40 A at 240 V (9.6 kW) | 18 mi | 147 mi | 21.0 h |
| 48 A at 240 V (11.5 kW) | 22 mi | 176 mi | 17.5 h |
| 64 A at 240 V (15.4 kW) | 29 mi | 235 mi | 13.1 h |
| 80 A at 240 V (19.2 kW) | 37 mi | 293 mi | 10.5 h |
*Estimates: charger kW ÷ EPA kWh/100 mi × 100, assuming the car accepts that power. Charging tapers near 100% and is slower in the cold.
All 4 trims (EPA data)
| Trim | kWh/100 mi | EPA range | EPA 240 V charge time | Energy for full range (est.) | Source |
|---|---|---|---|---|---|
| 2026 SIERRA EV Ext Range (11kW Charger) | 49.5 | 410 mi | 18.6 h | 203 kWh | record 49658 |
| 2026 SIERRA EV Std Range (11kW Charger) | 50.3 | 283 mi | 13.3 h | 142 kWh | record 49660 |
| 2026 SIERRA EV Ext Range (19kW Charger) | 52.4 | 385 mi | 11.5 h | 202 kWh | record 49659 |
| 2025 Sierra EV | 52.4 | 390 mi | 11.5 h | 204 kWh | record 48709 |
Source: fueleconomy.gov vehicle records (2025, 2026 model years). "Energy for full range" = kWh/100 mi × range ÷ 100, measured at the wall, so it includes charging losses and is not the battery size. Usable battery capacity is not in EPA data (data gap).
Will a bigger charger charge it faster? (per trim)
Times are empty to full EPA range. They are capped at the onboard charger rating only where EPA's own trim name states it. Otherwise they assume the car accepts the charger's full power, which may overstate the gain from 48 A and 80 A units.
| Trim | 32 A | 40 A | 48 A | 80 A | EPA 240 V time | What EPA data shows |
|---|---|---|---|---|---|---|
| 2026 SIERRA EV Ext Range (11kW Charger) | 26.4 h | 21.1 h | 18.4 h | 18.4 h | 18.6 h | EPA trim name states a 11 kW onboard charger: chargers above 46 A won't charge it faster. |
| 2026 SIERRA EV Std Range (11kW Charger) | 18.5 h | 14.8 h | 12.9 h | 12.9 h | 13.3 h | EPA trim name states a 11 kW onboard charger: chargers above 46 A won't charge it faster. |
| 2026 SIERRA EV Ext Range (19kW Charger) | 26.3 h | 21.0 h | 17.5 h | 10.6 h | 11.5 h | EPA trim name states a 19 kW onboard charger: chargers above 79 A won't charge it faster. |
| 2025 Sierra EV | 26.6 h | 21.3 h | 17.7 h | 10.6 h | 11.5 h | EPA time implies ≥17.8 kW average, so it accepts more than a 48 A charger gives. |
† Only if the car accepts that much power. This charger is more than 10% above the average power implied by EPA's own 240 V time, so treat EPA's time as the realistic figure.