2027 GMC Sierra EV Engine, Specs, Configurations – The 2027 GMC Sierra EV steps boldly into the electric era with a refreshed exterior that fuses rugged toughness and aerodynamic sleekness. Up front, the iconic C-shaped daytime running lights wrap around a closed grille, now illuminated and featuring dynamic airflow zones that adapt based on speed and battery temperature.
This intelligent system enhances efficiency while maintaining Sierra’s unmistakable presence. A lower air dam and integrated middle bumper skid plate wrap the front, proclaiming its off-road readiness and beefed-up underbody protection. The live-edge hood has been crisply recontoured, improving forward visibility and heat extraction during heavy-duty use. 2027 GMC Sierra EV Engine
2027 GMC Sierra EV Redesign and Update Plan
Exterior & Interior
The 2027 Sierra EV’s cabin makes a striking impression with upscale materials and technologically advanced features without compromising utility. GMC wraps the dashboard and door panels in soft, durable leatherette trimmed with contrast stitching. Real metal accents and uniquely patterned aluminum trim pieces add dimensional elegance. A 17-inch curved Infotainment screen floats above the center stack, powered by the newest GMC D1 software interface that delivers crisp graphics, voice recognition, and seamless wireless connectivity for Apple CarPlay and Android Auto. An additional 11-inch driver information display provides real-time energy flow, range, drive mode, and implemented towing data.
Storage and functionality are elevated through clever design choices. A central bin unfolds to hold laptops, large tools, or electronic devices—while still offering lined cup holders, a wireless phone charger, dual USB-C outlets, and a 120V power outlet. The center console and under-seat compartments offer hidden storage solutions that keep the cabin clutter-free. Rear seats slide and recline, offering flexible legroom and cargo space ratios. GMC includes a rear-seat fold-down armrest with integrated wireless chargers and USB-C ports, making the cabin practical for families and crews alike.
Additional creature comforts include tri-zone climate control with rear-zone activation, ventilated front seats, heated rear seats, and heated steering wheel options. A Bose 14-speaker premium audio system creates an immersive cabin experience. The panoramic sunroof with automatic shade adds an open-air feel, while UV-tinted windows reduce glare. Ambient lighting with customizable colors wraps the interior in soft illumination at night, enhancing visibility and ambiance. Altogether, the cabin-driven design balances tech sophistication, luxury comfort, and hard-use practicality.
From the side, the Sierra EV supports function-first design with flush door handles and energy-saving mirrors that fold automatically when parked. The wheel arches are more pronounced to accommodate 20- and 22-inch aero-optimized alloys wrapped with all-terrain EV-rated tires. A neatly integrated charging port lives behind a lid on the driver’s fender, matching body color while blending utility with elegance. The roof’s rear spoiler and rear glass converge along a power tailgate with a built-in step assist and modular load management system. GMC’s clean design lines continue to highlight the Sierra EV’s dual personality: luxury and dependability.
At the rear, the Sierra EV proudly wears a full-width LED light bar, modernized tail lamp signatures, and an invisible tow hitch that reflects its strong towing credentials. A retractable rear bumper step enhances access to the bed, while a functional under-valance diffuser contributes to aerodynamic stability. GMC also equips the EV with active air vents and rear skid plating, formalizing its serious work-tested credentials. Altogether, these exterior updates reflect the Sierra EV’s mission: advanced electric capability wrapped in rugged, distinctive GMC DNA.
2027 GMC Sierra EV Specs
Engine & Performance
Under the sheet metal, the 2027 GMC Sierra EV introduces a dual-motor all-wheel-drive system delivering up to 600 horsepower and 610 lb-ft of torque. The truck accelerates from 0–60 mph in an estimated 4.6 seconds in Max Tow and 4.3 seconds in the Sport layout. A robust 158-kWh Ultium battery system ensures a targeted range of 450 miles in rear-wheel-drive configuration, while the dual-motor AWD variant delivers around 420 miles. The platform supports up to 350 kW DC fast charging, achieving 10–80% in just 25 minutes, and includes CCS Combo compatibility for comprehensive infrastructure access.
Towing capability is taken seriously. The Sierra EV is rated for 12,000 lbs of towing when properly equipped, with onboard “Enhanced Brake Assist” synchronizing trailer brakes and vehicle recuperation. Adaptive air suspension provides a ride height lift up to 6 inches for rough terrain or hitching. It seamlessly lowers for highway efficiency. A trailering control interface provides hitch views, draft charts, trailer light tests, and trailer weight calculations from the DIC screen. Smart regen braking can be set to “Truck” mode for seamless electric towing responsiveness.
Driving modes—Towing, Sport, Terrain, and Off-Road—change torque distribution, suspension and steering feel, and regenerative behavior. Terrain Mode activates automatic front differential locking, more aggressive regen for crawl situations, and traction control fine-tuned for dirt, mud, or snow. Sport Mode sharpens throttle input, adds torque vectoring, and firms damping for more dynamic driving. Through all variations, the Ultium-based platform delivers refined handling and acceleration with the confidence of an electric powerhouse. 2027 GMC Sierra EV Engine
2027 GMC Sierra EV Fuel Economy
The Sierra EV arrives with efficiency credentials that redefine electric trucks. The rear-drive variant aims for 450 miles EPA range, while AWD trims promise 420 miles. Energy consumption hovers around 38 MPGe combined. Charging is easy, with 350-kW capability enabling 100-mile range in 7 minutes and a 10-80% recharge in roughly 25 minutes. Fourteen minutes of low-level charging brings in near-component reserves for work-day continuity.
2027 GMC Sierra EV Safety Features
The 2027 Sierra EV includes GMC’s latest “Super Cruise 2.0” hands-free driving system as standard on AT4X and Denali trim levels, with Highway Driving Assist available on lower trims. The driver assistance suite now adds hands-free trailer towing, automatic lane changes, and improved sensor fusion that addresses rain and poor visibility. Surrounding tech consists of radar and camera systems with over 50% wider coverage zones, enabling standard features like Adaptive Cruise Control, Lane Keep Assist, and Forward Collision Braking.
GMC introduces a new feature called “On-Demand Shield,” which applies minimal active braking when sensors anticipate imminent rear-end threats, reducing secondary collision severity. Additional active safety features—like Blind Zone Steering Assist, Rear Cross Traffic Braking, Enhanced Park Assist, and Intersection Assist—provide a comprehensive safety net. A rear pedestrian alert system uses radar to detect oncoming foot traffic when backing up, particularly helpful in crowded job sites or dense urban areas.
Structurally, the Sierra EV chassis is fortified with ultra-high-strength steel in cabin and battery enclosures. Eleven airbags cover occupants, including a new center front airbag. Peak rigidity supports efficient crumple zones and increased side-impact resilience. Thermal battery shielding protects against fire events and heat buildup. With steel-liner reinforcement, external frame rails, and enhanced rollover protection, the Sierra EV preserves bone-crushing capability while introducing next-level electromotive integrity.
2027 GMC Sierra EV Release Date & Price
Pricing begins at $69,995 for the base RST, with the AT4X off-road capable trim starting near $79,995 and flagship Denali Crest availability carrying a projected price near $94,995. Each purchase includes a Level 2 home charger with professional installation, three years of access to EVgo’s fast charging network, and complimentary vehicle-to-home (V2H) accessory adaption. Fleet buyers will benefit from GMC’s customizable performance and telematics packages, including software-disabled powertrain zones and keyless trailer unlocking.
Production is scheduled to start at Factory ZERO in Detroit in Q2 2026, with pre-orders opening during Q4 2025. Initial deliveries begin in late summer 2026, with nationwide availability by early 2027. GMC plans a staged rollout of features—over-the-air updates will unlock Super Cruise 2.0 to RST owners first, followed by advanced trailering features, and later, vehicle-to-load upgrades for AT4X and Denali owners. 2027 GMC Sierra EV Engine