2023 GMC Sierra 2500HD AT4 Crew Cab 4WD , Duramax Diesel , Off-Road Heavy Duty Truck for Sale in Spokane Valley WA Conquer every job and every adventure with this 2023 GMC Sierra 2500HD AT4 Crew Cab 4WD . If you're searching for a 2023 GMC Sierra 2500HD AT4 for sale , Duramax diesel truck , heavy-duty 4x4 pickup , or a premium off-road diesel truck, this Sierra delivers professional-grade capability, rugged styling, and luxury-level comfort in one incredible package. Powered by the legendary 6.6L Duramax Turbo Diesel V8 producing 445 horsepower and 910 lb-ft of torque , paired with the renowned Allison 10-speed automatic transmission , this Sierra is engineered to confidently tow heavy trailers, fifth wheels, horse trailers, boats, toy haulers, and construction equipment while providing exceptional performance and durability. The VIN identifies this truck as a 2023 GMC Sierra 2500HD AT4 Crew Cab 4WD equipped with the 6.6L Duramax Turbo Diesel . The AT4 trim is designed for drivers who want serious off-road capability without sacrificing premium comfort. Featuring a factory off-road suspension, skid plates, Rancho monotube shocks, distinctive AT4 styling, and a luxurious interior, this truck is equally at home on the job site, mountain trails, or long highway trips. Premium Features & Capability 6.6L Duramax Turbo Diesel V8 Allison 10-Speed Automatic Transmission Four Wheel Drive [4WD] AT4 Premium Off-Road Package Factory Lifted Off-Road Suspension Rancho Monotube Shocks Skid Plates Automatic Locking Rear Differential Crew Cab with Spacious Rear Seating Leather-Appointed Interior Heated & Ventilated Front Seats Heated Rear Seats Heated Steering Wheel Premium GMC Infotainment System Large Touchscreen Display Wireless Apple CarPlay & Android Auto Navigation System Bose Premium Audio System HD Surround Vision Camera System MultiPro Tailgate Integrated Trailer Brake Controller Gooseneck/Fifth-Wheel Trailer Prep [when equipped] Remote Start Push Button Start LED Lighting Premium AT4 Wheels Outstanding Towing & Payload Capability Whether you're towing an RV across the country, hauling equipment to the job site, exploring backcountry trails, or driving through the Inland Northwest, the Sierra 2500HD AT4 delivers the confidence, capability, and refinement serious truck owners demand. Every qualifying pre-owned vehicle at AutoNation Chevrolet Spokane Valley receives a comprehensive multi-point inspection performed by factory-trained technicians. We also provide a complimentary vehicle history report, transparent market-based pricing, competitive financing options, extended protection plans, and top-dollar trade-in values to help you purchase with confidence. We proudly serve customers throughout Spokane, Spokane Valley, Liberty Lake, Airway Heights, Cheney, Deer Park, Coeur d'Alene, Post Falls, Hayden, Sandpoint, Pullman, Moscow, Lewiston, Tri-Cities, Moses Lake, Yakima, Missoula, Kalispell, and the entire Inland Northwest. We also offer nationwide financing and vehicle delivery for customers across the United States. If you're comparing the Chevrolet Silverado 2500HD ZR2 , Ford F-250 Tremor , Ram 2500 Power Wagon , Ford F-350 Lariat Power Stroke , or another premium heavy-duty diesel truck, be sure to experience this 2023 GMC Sierra 2500HD AT4 before making your final decision. Its legendary Duramax power, Allison transmission, off-road capability, premium technology, and GMC craftsmanship make it one of the most desirable heavy-duty trucks on t