For truck buyers seeking a heavy-duty pickup that delivers uncompromising strength, advanced technology, and premium features, the 2026 GMC Sierra 2500HD is an outstanding choice. At Swanson GMC in Acton, MA, you will find an extensive selection of Sierra 2500HD models in a range of trims and configurations to suit your needs.
The new Sierra 2500HD offers two impressive engine options. The standard 6.6-liter V8 gas engine produces 401 horsepower and 464 pound-feet of torque. For even greater capability, upgrade to the available 6.6-liter Duramax™ turbodiesel V8, which churns out an incredible 470 horsepower and 975 pound-feet of torque. Both engines pair with a smooth-shifting 10-speed automatic transmission for seamless power delivery.
The Sierra 2500HD offers a comprehensive suite of standard and available safety features to help protect you and your passengers. Available driver assistance technologies include Adaptive Cruise Control, Automatic Emergency Braking, and Front Pedestrian Braking. The innovative HD Surround Vision camera system provides a clear view of your surroundings, making it easier to navigate tight spaces and avoid obstacles.
The 2026 GMC Sierra 2500HD is available in various cab and bed configurations to accommodate your needs. Choose from Regular Cab, Double Cab, or Crew Cab body styles, paired with a standard or long bed. Four-wheel drive is available across the lineup for enhanced traction and off-road capability.
Marlborough shoppers can browse our new inventory to find the right model. We understand every shopper is different, so we'll be here to help find the Sierra 2500HD that fits your daily work needs, and give you a comfortable ride for the drive home.
Shoppers can choose Higher trims like the SLT and Denali, which offer perforated leather seating, heated and ventilated front seats, and a large infotainment system with navigation and wireless Apple CarPlay® and Android Auto™ compatibility. The MultiPro™ Tailgate and available power sunroof add more versatility and luxury to your driving experience.
Whether you're hauling heavy loads on the job site or towing a large trailer, the Sierra 2500HD has you covered. When properly equipped, this heavy-duty truck can tow up to 18,500 pounds and handle a maximum payload capacity of over 3,900 pounds. A Gooseneck/5th Wheel Prep Package and Trailering Package with Hitch Guidance ensure you're ready for any towing task.
We encourage you to swing by our dealership for a quick test drive in a new GMC Sierra 2500 HD. Nashua, NH, truck buyers can use our flexible financing options and competitive lease specials. We look forward to seeing you down the road.
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12 Sudbury rd
Acton, MA 01720