The order guide for the 2027 GMC Sierra EV is out. And just like the 2027 Silverado EV, this is a meaningful year. General Motors’ GMC brand gives the Sierra EV a native NACS charge port, swaps four exterior colors for four new ones, adds a Denali Dark Package, and stocks the accessory shelf with new wheels, lights, and even Brembo brakes.
Here is every change, pulled straight from the order book.
The Charge Port Flips to NACS
The headline change. For 2027, the Sierra EV trades its CCS1 inlet for a native NACS port (SAE J3400, the Tesla-style connector). Tesla Superchargers become plug-and-go, no adapter dangling off the fender. The included Dual Level Charge Cord (PSC) now ends in a J3400 vehicle connection as well.
The accessory list confirms the flip. The adapters GMC now offers all point the other direction, described in the guide as intended for “NACS native inlet vehicles.” Three dealer-provided packages bundle them so buyers do not have to puzzle out the combinations:
The CCS1 adapter pulls double duty: it also handles vehicle-to-home discharging through the PowerShift Charger, so the Sierra EV keeps its party trick of powering your house in a blackout. DC fast charging capability itself is unchanged: up to 220 kW on Standard Range, 300 kW on Extended Range, and 350 kW on the 800-volt Max Range pack.
Four Colors In, Four Colors Out
Deep Bronze Metallic (GXN), Thunderstorm Gray (GNO), Magnus Gray Matte (GBL), and Deep Ocean Metallic (GAI) are gone. In their place: Azurite Blue Metallic, Dark Ridge Metallic, Deep Void Matte, and Marine Teal, all arriving after the start of production.
The touch-up paint numbers tell a fun family story. Azurite Blue Metallic (WA-243L) is the same paint the Silverado EV calls Pacific Blue, and Marine Teal (WA-131H) is Chevrolet’s Lagoon wearing a GMC badge. Dark Ridge Metallic (WA-243F) is the very same gray that just landed on the 2027 Canyon under the same name and on the 2027 Colorado as Storm Gray Metallic. Deep Void Matte replaces Magnus Gray Matte as the lineup’s flat-finish flagship.
Here is the full 2027 palette:
Denali Goes Dark
New for 2027 is the (WJU) Denali Dark Package, flagged as late availability. It blacks out the assist steps, the grille surround, and the nameplates, then finishes the look with dark wheels that scale with your battery choice. On the Denali Extended Range it brings 22-inch Painted Deep Space wheels with a black lug nut and wheel lock kit, and those get upgraded to the new 24-inch 6-Split-Spoke High Gloss Black wheels when the Denali Reserve Package is on the order. On the Denali Max Range, which includes Reserve equipment, the 24s are part of the package from the start.
New Dealer-Installed Goodies, Including Brembo Brakes
The LPO (dealer-installed) accessory list picks up some legitimately interesting hardware this year. The one that jumps off the page: a performance brake kit with red Brembo 6-piston front calipers for a truck that weighs over 8,000 pounds. Physics appreciates the help. That said, braking performance has never been a complaint on any GM EV I’ve driven, including our HUMMER EV. So, consider it a looks over function upgrade.
More Standard Equipment, Fewer Mirror Choices
A few running changes tidy up the spec sheet for 2027:
One note for the RPO code spotters: with DX6 standard everywhere, the Sierra EV mirror option list collapses from three codes to one.
The 2027 Sierra EV Lineup at a Glance
The trim walk is unchanged: Elevation, AT4, and Denali, each defined by battery choice, every one a Dual Motor 4WD crew cab with the 5-foot-11 bed.
Capability holds steady too: up to 12,500 pounds of towing on the Elevation Extended Range (the Denali Extended Range matches it with the K28 charger and coil suspension) and up to 2,250 pounds of payload on the Standard Range truck.
Buy a 2026 or Order a 2027?
If Deep Ocean Metallic or Thunderstorm Gray is your color, a 2026 on a dealer lot is the only way to get it, and end-of-year pricing is on your side. For everyone else, the 2027 is the easy call. The native NACS port means the charging network this truck will lean on for the next decade is built into the fender, not carried in the frunk. Add the new colors, the Denali Dark Package, and the Brembo kit, and the 2027 order book is simply the better one.
The Rest of the 2027 Story
The Sierra EV joins a 2027 lineup GM has been rolling out model by model. Here is what has changed across the rest of the family so far:
- 2027 Chevrolet Silverado EV: Order Guide Changes
- 2027 Chevrolet Colorado: Order Guide Changes
- 2027 GMC Canyon: Order Guide Changes
- 2027 GMC Yukon: What’s New
- 2027 Chevrolet Tahoe and Suburban: What’s New
- 2027 GMC Acadia Updates
- 2027 Chevrolet Traverse Updates
- 2027 Cadillac Optiq and Vistiq Changes
Join the Discussion
Planning a 2027 order, eyeing the Denali Dark Package, or curious how the NACS switch plays out at the charger? Owners are comparing notes in the Silverado EV & Sierra EV forum.
Zane Merva is the Executive Editor of GM-Trucks.com and the President of the New England Motor Press Association (NEMPA). A veteran automotive journalist with over 26 years of experience, Zane is a designated ‘Car Talk’ Expert and has been a contributor to The Boston Globe. He possesses a unique evaluative perspective, having road-tested more than 2,000 vehicles across every major manufacturer. While he is a recognized authority on General Motors truck platforms—including the Silverado, Sierra, and Colorado—his expertise is grounded in decades of deep competitive analysis that few in the industry can match. His commentary has been featured by major OEMs and media outlets, including Hyundai and PR Newswire