October 17, 2026 · EV Charger Install Hub
Silverado EV & Sierra EV Home Charger Installation: 48A or 80A?
The short version: the 2027 Chevrolet Silverado EV and GMC Sierra EV have a native NACS port and an 11.5 kW onboard charger as standard, and Chevrolet lists a 19.2 kW onboard charger as available on the Silverado EV. Which one your truck has decides whether you install a 60A or a 100A circuit. Every spec below is from Chevrolet's, GMC's and GM's own pages.
NACS Port on the 2027 Trucks
GM moved all of its 2027 model-year EVs to a native NACS port, and GMC calls the Sierra EV's NACS port standard. A 2027 truck takes a NACS charger directly, or a J1772 charger with an adapter — see NACS vs J1772.
11.5 kW or 19.2 kW: Which Circuit to Install
Chevrolet's 2027 configurator lists the 11.5 kW onboard charging module as standard and the 19.2 kW module as available (shown on the Silverado EV Trail Boss); the Sierra EV trim we checked (Denali Max Range) lists the 11.5 kW module. Check your truck's window sticker or build sheet for which one you have.
| Onboard charger | GM charger that matches it | Circuit |
|---|---|---|
| 11.5 kW (standard) | GM PowerUp 2 — up to 11.5 kW / 48A | 60A dedicated |
| 19.2 kW (available) | GM Energy PowerShift — up to 19.2 kW / 80A | 100A dedicated |
Both circuits follow the same rule: EV charging is a continuous load, so the circuit is rated at 125% of the charging current (48A → 60A, 80A → 100A). A 19.2 kW car on a 48A charger still charges at 11.5 kW — it simply cannot use its extra capacity — so the 100A setup only makes sense if your car has the 19.2 kW module and your panel can carry it.
What Installation Involves
- Panel check and load calculation — especially for a 100A circuit, which a 200A service may not be able to spare.
- Permit — pulled by your electrician; see who issues EV charger permits in your city.
- Circuit and charger — a dedicated 240V run sized to the charger, then the charger mounted and connected.
- Inspection — the permit closes after the local inspection.
Cost depends on the circuit size, the distance from your panel and whether the panel needs work — see EV charger installation cost, panel upgrades and rebates by state.
Frequently Asked Questions
What home charger does the Chevy Silverado EV need?
For the standard 11.5 kW onboard charger, a 48A Level 2 charger on a 60A circuit — GM rates its PowerUp 2 at up to 11.5 kW / 48A. Chevrolet lists a 19.2 kW onboard charger as available (on the Trail Boss); to use it at full speed, GM sells the PowerShift charger at up to 19.2 kW / 80A, which needs a 100A circuit.
Do the 2027 Silverado EV and Sierra EV have NACS ports?
Yes. GM says all of its 2027 model-year EVs from Chevrolet, Cadillac and GMC come standard with a NACS port, and GMC calls the Sierra EV's native NACS port standard. Check an earlier truck's port before buying a charger with a fixed plug.
Is a 100A circuit worth it for an electric truck?
Only if your truck has the 19.2 kW onboard charger and your panel can carry the extra load. A truck with the standard 11.5 kW module charges no faster on an 80A charger than on a 48A one. Your electrician should run a load calculation first; a 100A circuit is a large share of a typical 200A service.
Do I need a permit to install a Silverado EV or Sierra EV charger?
Almost always, if the job adds a 240V circuit. Your licensed electrician pulls the permit; our permits guide lists who issues it in 86 cities.
Sources (read 2026-10-17):news.gm.com · chevrolet.com · gmenergy.gm.com · gmc.com · gmc.com · Other models: New EVs and home charging.