Diesel-powered for bold strength, our 2026 GMC Sierra 2500HD Denali Ultimate Crew Cab 4X4 is the truck you deserve in Onyx Black! Motivated by a TurboCharged 6.6 Litre DuraMax Diesel V8 providing 470hp and 975lb-ft of torque to a 10 Speed Allison Automatic transmission. You can also enjoy Digital Variable Steering and an off-road suspension for a refined ride, even on rugged terrain. Refined and rugged style is standard with LED lighting, 20-inch wheels, power assist steps, a spray-on bedliner, sunroof, and a MultiPro tailgate with a built-in Kicker audio system. Our Denali Ultimate cabin provides top-shelf amenities such as heated/ventilated full-grain leather power front and rear seats, a heated leather steering wheel, full-color navigation, dual-zone automatic climate control, open-pore wood trim, a power rear window, and a remote start. Terrific tech benefits include a 12.3-inch driver display, a 13.4-inch touchscreen, Bose Performance Series audio, WiFi compatibility, wireless charging, Apple CarPlay?/Android Auto?, Google Built-in, Bluetooth?, and voice control. For safer trucking, GMC provides a head-up display, adaptive cruise control, a digital rearview mirror, HD surround vision, a bed-view camera, trailer-compatible blind-spot monitoring, a ProGrade trailering system, automatic braking, and more. Our bold Sierra 2500 Denali Ultimate is the answer when tough jobs call! Save this Page and Call for Availability. We Know You Will Enjoy Your Test Drive Towards Ownership! Metros' Premier Credit Specialist Team Good/Bad/New Credit? Divorce? Self-Employed?