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The 2027 GMC Sierra EV reaches up to 478 miles of GM-estimated electric range with 760 hp on tap. The Max Range battery pack adds 800V DC fast charging, gaining up to 120 miles in roughly 10 minutes. This page covers every trim, spec, and key update, with inventory at Greg Hubler Buick GMC in Marion.
The main figure for the 2027 Sierra EV is its GM-estimated range ceiling of 478 miles, achievable on the AT4 Max Range and Denali Max Range configurations. That range number, paired with the available 800V public DC fast charging architecture on Max Range configurations, represents the most meaningful capability upgrade this truck carries into the new model year.
The 2027 lineup also formalizes the NACS (North American Charging Standard) port as standard across all trims, giving Sierra EV owners direct access to more than 29,000 compatible Supercharger stations and a broad network of public fast chargers without needing an adapter.
Vehicle-to-Home (V2H) power export is now standard across the Sierra EV lineup, allowing the truck to serve as a backup power source for a home. The available GMC Energy Transfer Pro enables up to 10.2 kW of off-board power output, a practical feature for job sites and outdoor use in areas around Marion and beyond.
Super Cruise hands-free driver assistance technology, operable on over 600,000 miles of compatible roads, is standard on AT4 and Denali trims for 2027.
The 2027 Sierra EV offers three trims, Elevation, AT4, and Denali, each available in multiple battery configurations.
The entry point into the Sierra EV lineup. Standard features include the 16.8-inch GMC Infotainment System with Google built-in, an 11-inch Driver Information Center, the power-open eTrunk, the six-function MultiPro Tailgate, wireless phone charging, heated front seats, HD Surround Vision, and a full suite of standard safety technologies.
Standard Range: GM-estimated 288 miles of range. Uses a 475V DC fast charging system.
Extended Range: Steps up to the larger battery pack and gains 670V DC fast charging capability, the ProGrade Trailering System as an available option, the Comfort and Convenience Package as an available add-on, and MultiPro Midgate availability. GM-estimated 412 miles of range.
The off-road-focused trim adds a standard 2-inch lift, 10.04 inches of ground clearance, 35-inch all-terrain tires, red front recovery hooks, 4-Wheel Steer with CrabWalk, High Stance Suspension, standard Comfort and Convenience Package, standard Super Cruise, standard Bose audio, and a 14-inch Head-Up Display.
Extended Range: GM-estimated 412 miles of range. Tows up to 12,300 lbs.
Max Range: Combines the AT4’s full off-road hardware with the Max Range battery, 800V DC fast charging, and standard ProGrade Trailering System. GM-estimated range reaches 478 miles.
The Denali brings a distinct interior with luxury seating materials, standard Bose 7-speaker audio with Richbass woofer, a 14-inch multicolor Head-Up Display, standard Super Cruise, ventilated front seats, 8-way power passenger seat, driver memory, Perimeter Grille Illumination, standard LED fog lamps, Dual Projector Headlamps, standard spray-on bedliner, and Enhanced Automatic Parking Assist. The Denali Reserve Package adds available Adaptive Air Ride suspension.
Extended Range: GM-estimated 412 miles of range. Tows up to 12,500 lbs.
Max Range: Upgrades to the Max Range battery and 800V DC fast charging. The panoramic fixed glass roof is standard, the MultiPro Midgate is standard, ProGrade Trailering System is standard, 4-Wheel Steer with CrabWalk is standard, and Energy Transfer Pro is standard. GM-estimated range reaches 478 miles.
The Sierra EV uses a 2-motor e4WD system delivering power to all four wheels simultaneously. Output varies by trim:
| Trim | Horsepower |
|---|---|
| Elevation | 645 hp |
| AT4 | 750 hp |
| Denali | 760 hp |
Torque peaks at 775 lb-ft on top configurations. The single-speed direct-drive transmission eliminates the gear-change delay present in conventional trucks. With available Max Power mode, the Sierra EV runs 0-60 mph in under 4.5 seconds.
| Battery Configuration | Available Trims | GM-Estimated Range |
|---|---|---|
| Standard Range | Elevation only | 288 miles |
| Extended Range | Elevation, AT4, Denali | 412 miles |
| Max Range | AT4, Denali | 478 miles |
The standard 11.5 kW onboard charging module supports Level 2 home charging. The Regen on Demand steering wheel paddle lets the driver dial in regenerative braking force for one-pedal-style driving in traffic.
Towing reaches a maximum of 12,500 lbs on Extended Range Elevation and Denali trims. Payload capacity is 1,500 lbs. The bed measures 70.59 inches (5.88 feet) in length. With the available MultiPro Midgate deployed alongside the folded rear seats and removable back glass, cargo length extends to a class-leading 10 feet 10 inches.
The Sierra EV seats five across two rows. Front leg room measures 44.85 inches, front head room reaches 43.85 inches, and second-row leg room comes in at 44.32 inches. Second-row shoulder room is 63.29 inches, keeping rear-seat passengers comfortable on longer Indiana highway runs.
The Elevation interior uses CoreTec seat trim with heated front seats standard. The AT4 steps up with heated and ventilated front seats, an 8-way power passenger seat, and power tilt-and-telescoping steering column as standard. The Denali delivers luxury seating with available After Dark or Desert Dune color choices, quilted materials, Galvano chrome accenting, and standard heated rear outboard seats.
Cargo volume in the bed measures 57.3 to 57.8 cubic feet depending on trim. The eTrunk provides front-of-vehicle lockable, weatherproof storage for luggage and gear. Cargo bed LED lighting is standard on Elevation trims and above. An available 240-volt bed-mounted outlet and multiple 120-volt outlets turn the bed into a worksite power station.
The panoramic fixed glass roof is standard on the Denali Max Range and available on other upper trims, with infrared and UV tinting to manage cabin temperature.
Every 2027 Sierra EV carries a 16.8-inch diagonal Premium GMC Infotainment System with Google built-in and an 11-inch Driver Information Center. Wireless smartphone charging, Wi-Fi hotspot, digital key (smartphone access), and remote start are all standard.
The AT4 and Denali add a 14-inch multicolor Head-Up Display as standard. The Denali brings the Bose 7-speaker audio system with Richbass woofer as standard. An available MultiPro Tailgate Audio System by KICKER can be added on any trim.
The Sierra EV supports up to 15 camera views, including Surround View, Hitch View, Transparent Trailer View, Inside Trailer View, and Rear Camera Mirror. The Surround Vision Recorder function saves footage to a USB drive in 2-hour loops, and Security Recording activates automatically if the alarm triggers.
Super Cruise hands-free driver assistance is standard on AT4 and Denali trims, covering more than 600,000 miles of compatible roads. It manages steering, acceleration, and braking so the driver can maintain a relaxed posture during compatible highway segments.
The in-vehicle Energy app monitors battery use, sets charging schedules, and preconditions battery temperature. The myGMC mobile app locates nearby charging stations and allows advance payment for charging sessions.
The 2027 Sierra EV carries a thorough standard safety suite across all trims:
The AT4 and Denali add Enhanced Automatic Parking Assist, Driver Attention Assist, and Smart Trailer Integration Indicator. The Denali Max Range includes Blind Zone Steering Assist with Trailering as standard.
The EV Propulsion and Battery Warranty covers 8 years or 100,000 miles. The bumper-to-bumper warranty runs 3 years or 36,000 miles. Roadside assistance extends to 5 years or 60,000 miles, with towing coverage matching the battery warranty at 8 years or 100,000 miles.
Shoppers who need a full-size truck with serious towing, genuine off-road capability, and the ability to leave charging anxiety behind will find the 2027 Sierra EV built around their use case. The 478-mile Max Range ceiling addresses the most common hesitation around electric trucks. Drivers in Marion and across Indiana who cover long distances between charges can run the AT4 Max Range or Denali Max Range without mapping their days around charging stops.
Compared to prior Sierra EV model years, the 2027 adds the native NACS port as standard, expands V2H as a lineup-wide standard feature, and locks in Super Cruise as standard on AT4 and Denali rather than optional. Buyers who passed on earlier Sierra EVs due to charging network concerns or range anxiety have the most complete argument for reconsideration in this model year.
The Elevation Standard Range covers shorter-range at the most accessible entry point. The Elevation Extended Range suits daily drivers and tow-capable buyers. The AT4 trims serve off-road buyers, and the Denali trims deliver a luxury-truck experience with the full suite of technology.
Greg Hubler Buick GMC in Marion, IN serves buyers from across north-central Indiana looking for the 2027 Sierra EV. Buyers focused on the 478-mile Max Range, the AT4’s 10.04 inches of ground clearance, or the Denali’s luxury interior can connect with the Greg Hubler team to match the right configuration. Check available Sierra EV inventory, ask about available trims, and schedule a test drive at the Marion location.
Range varies by trim and battery pack. The Elevation Standard Range delivers a GM-estimated 288 miles. Elevation Extended Range, AT4 Extended Range, and Denali Extended Range all reach a GM-estimated 412 miles. The AT4 Max Range and Denali Max Range both achieve a GM-estimated 478 miles.
The Max Range configurations support 800V public DC fast charging at up to 350 kW, adding approximately 120 miles in about 10 minutes at a compatible station. Extended Range configurations support 670V DC fast charging at up to 300 kW. The Elevation Standard Range supports 475V DC fast charging at up to 220 kW. All trims include an 11.5 kW onboard charging module for Level 2 home charging (Denali Max Range uses a different onboard module per the specs).
The 2027 Sierra EV tows up to 12,500 lbs on Elevation and Denali trims equipped with the Extended Range battery. The AT4 Extended Range tows up to 12,300 lbs. Tow ratings vary by configuration, so confirm your specific trim’s rating with a Greg Hubler Buick GMC team member.
Super Cruise is GMC’s hands-free driver assistance technology. It manages steering, acceleration, and braking on over 600,000 miles of compatible roads. Super Cruise is standard on AT4 and Denali trims and available as a package on Elevation Extended Range.
4-Wheel Steer with CrabWalk is standard on the AT4 trims and standard on the Denali Max Range. It is available on the Denali Extended Range. This system allows the rear wheels to turn independently from the front wheels, improving maneuverability in tight areas and enabling diagonal movement at low speeds.
Vehicle-to-Home (V2H) is a standard feature on the 2027 Sierra EV that lets the truck export power to a home’s electrical system. The available GMC Energy Transfer Pro raises off-board output to up to 10.2 kW.
The 2027 Sierra EV is assembled at the Factory ZERO Detroit-Hamtramck Assembly Plant in Michigan.
The EV Propulsion and Battery Warranty covers 8 years or 100,000 miles. The bumper-to-bumper warranty covers 3 years or 36,000 miles.