What charge port does the GMC Sierra EV use?

CCS1 (Combined Charging System) - a J1772-shaped AC inlet with two extra DC pins below it. A NACS adapter is sold separately by the automaker for the years GarageDex confirmed (see the table).

How fast does the GMC Sierra EV charge at home?

GarageDex could not confirm a published onboard AC kW figure for the 2026 model year from the manufacturer's own page - check your window sticker or owner's manual for the exact number.

How fast does the GMC Sierra EV charge at a DC fast charger?

Up to 350 kW at a compatible DC fast charger, tapering as the battery fills - most DC sessions are planned to about 80%, not 100%, because the last 20% charges much slower.

Does the GMC Sierra EV need an adapter?

NACS adapter available from OEM - see the adapter option below.

GMC Sierra EV charging port and charge rate

The 2026 GMC Sierra EV uses a CCS1 charging port (a NACS adapter is offered by GMC), and GarageDex could not confirm a published onboard AC kW figure for this year and up to 350 kW at a DC fast charger.

Key takeaways

2026 GMC Sierra EV: CCS1 port.
Onboard AC Level 2 rate not published by the source.
Peak DC fast charge: up to 350 kW.
NACS adapter: NACS adapter available from OEM.

GMC Sierra EV charging by year
Years	Port	AC (Level 2)	DC fast charge	Battery	NACS adapter
2026	CCS1	n/a	350 kW	n/a	NACS adapter available from OEM

Which Level 2 charger do you need?

A home Level 2 charger is sold by its amperage (32A, 40A, 48A...), but your car only ever charges at the lower of two numbers: the charger's rated output and your car's own onboard AC charger limit. Installing a 48A/11.5 kW charger on a car with a 7.7 kW onboard charger does not speed anything up - the car simply will not draw more than it can accept. On any DC fast charger, the same idea applies to the whole session: charging is fastest at a low state of charge and tapers hard above roughly 80%, which is why route-charging stops are usually planned to 80%, not 100% (per the U.S. Department of Transportation's EV charging speeds guide). Match a home charger's amperage to your car's onboard AC rating from the table above, with a little headroom for future EVs in the household, rather than buying the biggest unit available.

Charging gear for the GMC Sierra EV

Match the plug to the CCS1 port above - a J1772/CCS1 Level 2 charger for home, plus an adapter only if the table says you need one.

J1772 Level 2 home chargerRated to at least your car's onboard AC kW, on a dedicated circuitShop chargers CCS1-to-NACS adapterNACS adapter available from OEMShop adapters Mobile connector / travel cablePlugs into a NEMA 14-50 or similar outlet away from homeShop cables

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Other GMC models

Hummer EV SUV

Source: GMC News - 2026 GMC Sierra EV adds AT4 and Elevation trims. Charging hardware and NACS-adapter bundling change often; confirm the port and adapter status on your build sheet or with the dealer before you buy hardware.