Blog / New GMC Vehicles

Heavy-Duty Excellence: The 2025 GMC Sierra HD

Capable and commanding on the road, the 2025 GMC Sierra HD can handle all your heavy tasks. You can choose between two lineups. The Sierra 2500 HD offers excellent performance at an affordable price. The Sierra 3500 HD delivers greater payload and towing capacity and is a great choice for most businesses.

2025 GMC Sierra HD Performance

Most trim levels of the 2025 Sierra HD have a standard 401-hp 6.6L V8 gas engine under the hood, paired with an Allison 10-speed automatic transmission. This setup delivers 464 lb-ft of torque, translating to responsive acceleration and smooth handling on all surfaces. Rear-wheel drive is standard, but you can opt for the available four-wheel drive if you need improved traction and off-road capability.

Ready to haul heavy loads, the Sierra 3500 HD offers the choice between single and dual rear wheel setups, both options available on both drivetrains. Available on all trim levels and standard on the Denali Ultimate, a 6.6L turbo-diesel V8 engine offers 470 horsepower and 975 lb-ft of torque. This engine also features an exhaust brake for improved towing control.

Utility and Cargo

Whether you opt for the 2500 HD or the 3500 HD, both Sierra models offer serious towing power and payload capacity. The entry-level Sierra 2500 HD Pro model, fitted with the base regular cab and a long bed, boasts a maximum payload capacity of 3,907 lbs. You can get more from the 3500 HD Pro which has a maximum payload capacity of 4,721 lbs.

The actual cargo volume varies from 69.5 cubic feet to 83.5 cubic feet, depending on the bed length. Heavy-duty towing comes from the turbo-diesel engine that can pull up to 21,870 lbs in the 2500 HD models and up to 36,000 lbs in the 3500 HD. For easy bed access, you can customize the truck with the available MultiPro tailgate.

Upscale Interior Features 

Beyond muscle, the new Sierra HD is a truck built for convenience and comfort. The regular cab has seating for up to three riders with a 40/20/40 split-fold bench and convenient under-seat storage. The double and crew cab styles offer seating for up to six riders with split-folding rear seats that allow you to transform the second row into a cargo area.

GMC's infotainment system boasts a 7-inch touchscreen with AM/FM radio, Bluetooth phone control and audio streaming, and smartphone integration. A 13.4-inch premium infotainment system with Google built-in is available. Other standard features include the Sierra HD Pro Safety suite of driver assistance technologies.

To test drive the 2025 Sierra HD and find your match, stop by our showroom at Bill Dodge Buick - GMC in Westbrook, ME. We will be here to help with anything you need.

Posted in:

Related Posts

Interior view of 2026 GMC Sierra EV Sunroof

Discover the 2026 GMC Sierra EV: Key Features in Westbrook, ME

The automotive world is buzzing with the arrival of the 2026 GMC Sierra EV, a groundbreaking electric truck that builds on the rugged, reliable, sophisticated Sierra and infuses it with innovation, power, and sustainability. This electric pickup is redefining what it means to drive a truck, perfect for Westbrook, Maine drivers who want the very best and freshest. From its impressive electric range to its state-of-the-art technology, the 2026 GMC Sierra EV is built to exceed expectations. more Exceptional Electric Performance At the heart of the 2026 GMC Sierra EV is its remarkable electric performance. Armed with a 2-motor e4WD system, this truck delivers power to all four wheels, ensuring optimal traction and control in any condition. A breathtaking 760 hp and 785 lbs.-ft. of torque ensures you have the instant power you need for towing or highway merging. With an EPA-estimated range of up to 478 miles on select trims, such as the Max Range battery option, the Sierra EV offers unparalleled convenience for long journeys or daily commutes. Additionally, the truck supports 800V public DC fast charging, allowing drivers to add up to 116 miles of range in just 10 minutes—a game-changer for those on the go. For Westbrook, Maine drivers navigating snowy winters or rugged New England landscapes, the Sierra EV’s selectable drive modes, including the powerful Max Power Mode, ensure a tailored driving experience for various conditions. Cutting-Edge Technology The 2026 GMC Sierra EV is a technological marvel, packed with innovative features that enhance both convenience and safety. The centerpiece of its interior is the 16.8” Premium GMC Infotainment System, which includes Google built-in compatibility and voice-activated controls, as well as wireless smartphone connectivity. This user-friendly interface makes accessing navigation, playlists, apps, hands-free communication, and vehicle settings seamless. Another standout feature is Super Cruise™ hands-free driver-assistance technology, available on select models. This system allows for hands-free driving on compatible roads, making long drives through Maine and beyond more enjoyable and less taxing. For added confidence, the Sierra EV offers up to 14 camera views, simplifying tight spaces or tricky parking situations. Unmatched Versatility The 2026 GMC Sierra EV is designed with versatility in mind, offering features that accommodate both work and play. One key highlight is the MultiPro™ Midgate, which extends the bed length to a class-leading 10 ft., 10 inches when used with the load stop function. This capability ensures you can transport larger cargo with ease, whether it's for a job site or an outdoor adventure. Additionally, the Sierra EV’s power-open eTrunk™ provides a weatherproof storage solution in the front of the vehicle, perfect for securing tools, luggage, or gear. For those who love the great outdoors, the available Energy Transfer Pro system supplies up to 10.2 kW of off-boarding power, allowing you to plug in essential equipment wherever your adventures take you. Luxurious Comfort and Design Inside and out, the 2026 GMC Sierra EV exudes sophistication. The spacious cabin offers premium materials and thoughtful design, including heated and ventilated seats, a panoramic glass roof, and customizable ambient lighting. Trims like the Denali elevate the experience further, with exclusive wood décor accents and advanced features like the 14” multicolor Head-Up Display, keeping you informed and your eyes on the road. On the exterior, the Sierra EV combines rugged functionality with sleek aesthetics. Features like illuminated badging, body-colored shields, and bold wheel designs ensure that this truck stands out on the streets of Westbrook, Maine. Visit Bill Dodge Westbrook Ready to experience the future of trucks? Visit Bill Dodge Buick GMC in Westbrook, ME, to explore the 2026 GMC Sierra EV. Schedule a test drive today and discover how this electric truck can revolutionize your driving experience. The 2026 GMC Sierra EV is more than just a truck; it’s a statement of innovation, power, and sustainability. With its impressive electric range, advanced technology, and versatile design, this electric pickup is built for drivers in Westbrook, ME, who demand the best.

Exploring the 2026 GMC Sierra EV: Luxury, Power, and Innovation for Every Driver

As GMC’s first fully electric pickup, the Sierra EV represents the perfect harmony of professional-grade capability, futuristic design, and premium comfort. Available in 3 distinctive trims — Elevation, AT4, and Denali. This all-electric truck redefines what’s possible on the road and off it. Whether you’re a tech-forward driver, an off-road explorer, or someone who demands top-tier luxury, there’s a Sierra EV built just for you. more Elevation: Electrified Performance Meets Everyday Practicality The Sierra EV Elevation makes an impressive debut as the foundation of the lineup, combining everyday versatility with electrifying capability. Powered by a dual-motor e4WD system, it produces up to 605 horsepower and 7,400 lbs.-ft. of wheel torque, delivering instant power and confidence in every drive. Drivers can expect an EPA-estimated 283 miles of range, or extend that to up to 410 miles with the available Max Range battery. A standard 16.8-inch diagonal Premium GMC Infotainment System anchors the cabin, while features like a sliding wireless phone charger, heated front seats, and MultiPro Tailgate blend comfort and convenience seamlessly. Riding on 18-inch aluminum wheels with 33-inch all-season tires, the Elevation trim proves that electric power can feel both familiar and revolutionary. AT4: Adventure Without Limits For those who live for the trail, the Sierra EV AT4 pushes the boundaries of adventure. Engineered for off-road excellence, it comes standard with 4-Wheel Steer, CrabWalk® diagonal driving, and an Adaptive Air Ride Suspension that can raise or lower the truck by approximately two inches for optimal ground clearance. With up to 390 miles of GM-estimated range, the AT4 delivers uncompromising endurance for even the most rugged excursions. It also includes Terrain Mode, 35-inch all-terrain tires, and Power Station Pro, which allows the truck to provide up to 10.2 kW of off-boarding power — perfect for charging tools, powering gear, or running campsite essentials. Inside, the Forest Storm interior combines durability with refinement, featuring dark, technical finishes and bold accents that match its adventurous personality. Denali: The Ultimate Expression of Electric Luxury The Sierra EV Denali stands at the peak of power and sophistication. With its signature Denali grille lighting, dual-projector LED headlights with charge status indicators, and 22-inch UltraBright machined wheels with laser-etched Denali logos, this model embodies modern craftsmanship in motion. The Denali’s electric platform delivers up to 760 horsepower and 785 lbs.-ft. of torque in Max Power mode. Its Max Range battery provides an astounding up to 478 miles of GM-estimated range, ensuring no destination feels out of reach. Inside, luxury takes center stage with premium full-grain leather seating, open-pore wood trim, and a panoramic fixed glass roof that bathes the cabin in natural light. The Super Cruise™ hands-free driver-assistance system comes standard, allowing for confident, effortless driving on compatible roads. Experience the Future at Bill Dodge Buick GMC The 2026 GMC Sierra EV isn’t just a glimpse of the future. It’s proof that power, sustainability, and sophistication can coexist in one extraordinary truck. From the versatile Elevation to the adventurous AT4 and the opulent Denali, each trim is designed to match your lifestyle with precision and purpose. Visit Bill Dodge Buick GMC in Westbrook, ME, or explore our inventory online at to experience the Sierra EV for yourself. The future of driving has arrived and it’s charging ahead with GMC.

Exploring the Trim Levels of the 2026 GMC Terrain

At Bill Dodge Buick GMC in Westbrook, ME, sophistication meets capability in the all-new 2026 GMC Terrain. This compact SUV takes everyday driving to new heights, offering rugged performance, premium comfort, and advanced connectivity across its refined lineup. Whether you’re commuting along the Maine coast or exploring off-the-beaten-path trails, the 2026 Terrain delivers the versatility and confidence you expect from GMC. more Elevation: Contemporary Style Meets Everyday Function The Terrain Elevation sets the foundation for the lineup with bold design and smart functionality. Powered by a 1.5L Turbocharged engine paired with an Continuous Variable Transmission (CVT), the Elevation delivers 175 horsepower with available AWD for confident handling in every season. Inside, you’ll find the 15-inch Premium GMC Infotainment System with Google built-in, keeping you seamlessly connected through navigation, music, and apps. Standard heated front seats, keyless open and start, and a suite of over 16 advanced driver-assistance features make every journey more comfortable and secure. Optional upgrades—such as a two-tone roof, wireless charging, and a hands-free power liftgate—add convenience and style for drivers who appreciate the finer details. AT4: Rugged, Refined, and Ready for Adventure For those who crave capability with character, the Terrain AT4 is built to explore. This off-road-inspired trim comes standard with AWD, a lifted ride height, and a Selectable Terrain Mode that adapts performance to snow, mud, or sand. Equipped with 18-inch machined aluminum wheels and all-terrain tires, the AT4 delivers sure-footed traction wherever the road—or trail—takes you. Red recovery hooks, a steel front skid plate, and Hill Descent Control complete its confident stance. The interior features a distinctive AT4-exclusive cabin with durable materials and elegant stitching, perfectly blending rugged strength with everyday comfort for drivers in Westbrook, ME, who want adventure without compromise. Denali: The Ultimate Expression of Luxury At the top of the lineup, the Terrain Denali redefines sophistication in a compact SUV. Signature Denali styling—with a bold Galvano Silver grille, animated headlamps and taillamps, and 19-inch Ultra Bright machined aluminum wheels—immediately sets it apart. Inside, the cabin indulges with heated and ventilated front seats, available massaging functions, and Denali-exclusive suspension tuning for an exceptionally refined ride. The 15-inch infotainment system with Google built-in, High-Definition Surround Vision, and an available panoramic sunroof complete this modern masterpiece. Featured Editions: Tailored Style for Every Driver The 2026 Terrain lineup also offers available special editions for added flair and comfort. The Black Edition introduces sleek gloss-black aluminum wheels and dark exterior accents, while the Elevation Premium Package enhances convenience with CoreTec seating and dual-zone automatic climate control. These options allow you to customize your Terrain to reflect your personality and lifestyle perfectly. Discover the 2026 GMC Terrain at Bill Dodge Buick GMC From the striking Elevation to the adventure-ready AT4 and the ultra-luxurious Denali, the 2026 GMC Terrain offers a trim for every kind of driver. Each model showcases GMC’s commitment to premium craftsmanship, advanced innovation, and lasting capability. Visit Bill Dodge Buick GMC in Westbrook, ME, or explore our inventory online at to experience the new Terrain firsthand. Wherever life takes you, the 2026 GMC Terrain is ready to get you there in style.