New 2026 GMC Sierra 2500HD AT4 For Sale Dearborn, MI

The 2026 GMC Sierra 2500HD AT4 puts serious capability in your hands. Built on the legendary Duramax 6.6L V8 Turbodiesel platform paired with a 10-speed automatic transmission, this crew cab delivers the power and torque you need for heavy hauling and demanding work. The distinctive AT4 trim combines aggressive styling with premium comfort, all wrapped in striking black with a richly appointed Jet Black and Kalahari leather interior.- Duramax 6.6L V8 Turbodiesel engine- 10-Speed Automatic transmission- 4WD with 2-Speed Active Transfer Case- AT4 Premium Plus Package- Gooseneck/5th Wheel Prep Package with hitch platform- Snow Plow Prep/Camper Package- Premium Bose 7-speaker sound system with SiriusXM 360L- Heated and ventilated power leather front seats with memory- 15-inch multicolor head-up display- Surround vision camera system with trailer provisionsThis Sierra AT4 is engineered for those who demand versatility without compromise. The advanced technology package includes Apple CarPlay, wireless charging, and an in-vehicle trailering system app to simplify your towing experience. Built-in safety features like automatic emergency braking, rear cross-traffic alert, and trailer side blind zone monitoring give you confidence in any situation. Whether you're managing a job site, preparing for winter, or hauling your prized possession, this truck is ready to work as hard as you do.Visit us today to experience the capability and refinement of the Sierra 2500HD AT4. Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 $2500 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026