Pre-Owned 2025 GMC Sierra 2500HD AT4X For Sale Danbury, CT

2025 GMC Sierra 2500HD AT4X in white with a leather interior represents serious capability and refined comfort. This 4D crew cab diesel truck combines the legendary Duramax 6.6L V8 Turbodiesel engine with a 10-speed automatic transmission and full-time 4WD to handle demanding work and premium weekend adventures alike. With just over 15,400 miles, this gently used AT4X delivers the technology, towing intelligence, and off-road engineering GMC built into this generation's top-tier trim.- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission- 4WD with 2-speed active transfer case and off-road suspension- Bose Premium Series 12-speaker system with Apple CarPlay and Android Auto- Remote vehicle starter system and push-button start- Ventilated and heated front and rear seats with full-grain leather trim- Power moonroof with 18-inch machined aluminum wheels and high-gloss black accents- Multicolor 15-inch head-up display and HD surround vision camera system- Lane departure warning, automatic emergency braking, and rear cross-traffic alert- Wireless charging and smartphone projection- Spray-on bedliner with GMC logo and rear step bumperThis AT4X delivers the refined interior appointments and advanced protection systems that define the Sierra 2500HD lineup. The leather seating surfaces, heated steering wheel, and dual-zone climate control create a commanding driver experience, while the suite of camera and sensor technologies—including bed view, hitch guidance, and trailer side blind zone alert—makes towing safer and parking easier. Visit our showroom to experience this capable diesel truck and explore its available trailering packages and off-road performance features.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.