GMC · 2025–2026
Sierra EV Elevation
Standard-range electric truck. Here's what its onboard charger actually needs from your home's electrical panel.
Home (Level 2) charging facts
Pulled straight from the Sierra EV Elevation's onboard charger rating - not a generic EV number.
- Onboard charger draw
- 11.5 kW
- ~48A at 240V (kW × 1000 ÷ 240)
- Empty-to-full at max Level 2
- 8.9 hrs
- 102 kWh battery ÷ 11.5 kW
- Range added per hour
- ~25 mi/hr
- 11.5 kW × 2.2 mi/kWh efficiency
- DC fast charging
- 350 kW max
- Public chargers only - tapers as the battery fills
Typical full-speed install
48A charger on a 60A circuit
Reaches this car's 11.5 kW ceiling. Whether your panel has room for that circuit depends on everything else already on it - that's the actual assessment.
Connector
CCS
CCS (Combined Charging System) is the most common connector on non-Tesla EVs for both home Level 2 charging and public DC fast charging.
On the Sierra EV Elevation specifically, that connector carries up to 11.5 kW at home on Level 2 and up to 350 kW on public DC fast hardware.
Charging speed by circuit size
The GMC Sierra EV's onboard charger can't use more than 11.5 kW AC no matter how big the circuit - past 48A, a bigger charger buys you nothing on this car.
| Charger setting | This car actually draws | Range added / hour | 8-hr overnight |
|---|---|---|---|
| 16A | 3.8 kW | ~8 mi | ~64 mi |
| 24A | 5.8 kW | ~13 mi | ~104 mi |
| 32A | 7.7 kW | ~17 mi | ~136 mi |
| 40A | 9.6 kW | ~21 mi | ~168 mi |
| 48A | 11.5 kWcapped by car | ~25 mi | ~200 mi |
Overnight, at full onboard speed
200 mi / 8 hrs
250 mi across a 10-hour window, at 11.5 kW.
Approximate cost to fill from empty
$13.26
Assumes $0.13/kWh (a national-average estimate, not your local rate) × 102 kWh - about $0.059/mile.
GMC Sierra EV charging questions
How long does it take to charge a 2025–2026 GMC Sierra EV Elevation on a Level 2 charger?
About 8.9 hours from empty to full at its 11.5 kW onboard-charger ceiling (102 kWh battery ÷ 11.5 kW).
Times scale with amperage - see the circuit-size table above for other settings.
What amperage does a GMC Sierra EV draw on Level 2?
At its full 11.5 kW rate, the GMC Sierra EV draws about 48A at 240V (kW × 1000 ÷ 240 = amps).
Can a GMC Sierra EV use a 48-amp charger?
Not to any real benefit. The GMC Sierra EV's onboard charger tops out at 11.5 kW (~48A) - a 48A charger doesn't charge it any faster than one already sized to 48A.
How much range does a GMC Sierra EV add per hour on a Level 2 charger?
About 25 miles of range per hour at its 11.5 kW ceiling (11.5 kW × 2.2 mi/kWh efficiency).
How much range does an 8-hour overnight charge add to a GMC Sierra EV?
Roughly 200 miles from an 8-hour overnight charge (25 mi/hr × 8 hours), or about 250 miles across a 10-hour window.
What's the DC fast charging ceiling for a GMC Sierra EV?
Up to 350 kW on a public DC fast charger - well above its 11.5 kW Level 2 (home) ceiling, though DC fast rates taper as the battery fills.
Other GMC EVs
Will your panel handle this?
ChargeRight runs the full NEC load calculation against your actual panel - not a generic rule of thumb.
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