Pre-Owned 2026 GMC Sierra 2500 HD AT4 For Sale Danbury, CT

Meet the 2026 GMC Sierra 2500HD AT4 in White—a heavy-duty truck built to handle demanding work and provide the comfort you deserve when you're off the clock.- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque- 10-Speed Automatic transmission with 4WD- X31 Off-Road Package for enhanced capability- 2-Speed Active Transfer Case- Bose Premium 7-Speaker Sound System with SiriusXM 360L Trial- Wireless Phone Projection and Apple CarPlay/Android Auto- Bed View Camera with Two Trailer Camera Provisions and Trailer Side Blind Zone Alert- HD Surround Vision and Ultrasonic Front and Rear Park Assist- Heated and Ventilated Front Seats with 10-Way Power Adjustment- Push Button Start with Remote Vehicle Starter System- 20 High Gloss Black Aluminum Wheels- Wireless Charging for compatible devices- Hill Descent Control and Electronic Stability ControlThis Sierra 2500HD combines serious towing and hauling capacity with refined interior appointments. The Duramax diesel engine delivers the power you need while the 10-speed automatic ensures smooth acceleration and efficient cruising. The X31 Off-Road Package provides the suspension and hardware to tackle rough terrain with confidence.Inside, you'll find a well-appointed cabin designed for long hours on the road. Heated and ventilated front seats keep you comfortable year-round, while the Bose sound system and wireless charging add modern convenience. The available technology package includes extensive camera systems for towing, parking assistance, and visibility that makes maneuvering this truck easier in tight situations.Safety technology is thoughtfully integrated throughout the truck. Automatic Emergency Braking, Forward Collision Alert, and Lane Departure Warning help prevent accidents, while the surround-view camera system and park assist features reduce blind spots. OnStar emergency communication provides peace of mind wherever your work takes you.The AT4 trim positions this Sierra as a serious work truck that doesn't compromise on capability or comfort. Whether you're managing a construction site, towing a trailer, or navigating challenging terrain, this truck is engineered to deliver reliability and performance day after day.Visit our showroom to experience the 2026 GMC Sierra 2500HD AT4 in person and discuss how this truck can serve your needs.This vehicle is being sold as Ingersoll Certified Pre-Owned. This program gives you peace of mind. You will receive. **A Vehicle Inspection and Reconditioning Form. **A Vehicle Carfax. **90 Days or 3000 miles of Powertrain Plus Limited Coverage **A Free Maintenance event including oil change and tire rotation within the first 12mo or 12,000 miles of driving (at an Ingersoll Automotive Location). This vehicle is eligible to be upgraded to Ingersoll Certified Plus for $749. That will give you the additional benefits of 12mo or 12,000 miles of limited exclusionary coverage, 6 years or up to 100,000 miles of powertrain limited coverage (from original in-service date), courtesy transportation for covered repairs, and road side assistance. **A Vehicle Exchange Program if dissatisfied in the first 3 days or 150 miles of ownership. This is not a manufacturer sponsored programPre-Owned Vehicle Prices do not include government fees and taxes, any finance charges, $997 dealer documentation fees (Pawling Conveyance Fee capped at $175 per NY Law), any emissions testing fees or other fees. All prices, specifications and availability are subject to change without notice. The features and options listed are provided by a 3rd party organization and may not apply to this specific vehicle. Contact dealer for most current information. Not responsible for typographic errors.