13.4 GMC Infotainment Screen | Denali Reserve Package | 15 Head-Up Display | Gooseneck/5th Wheel Prep Package | Bose Premium Audio | Power Sunroof | Rear Camera Mirror | GMC MultiPro Tailgate The 2026 GMC Sierra 3500 Denali Crew Cab 4WD dual-rear-wheel (DRW) truck represents the pinnacle of heavy-duty capability and premium luxury, showcasing a stunning Glacier White Tricoat exterior paired with a refined Jet Black interior. At its heart is the legendary Duramax 6.6L V8 Turbo Diesel engine working in harmony with a smooth 10-speed automatic transmission. This dually is engineered for maximum trailering authority, featuring a 3.42 rear axle ratio, an electronic Autotrac 2-speed transfer case, digital variable steering, a high idle switch, and a commanding 6,350 kg (14,000 lb) GVWR. It is completely setup for massive loads with the factory Gooseneck/5th Wheel Prep Package, an in-vehicle trailering app, and an integrated trailer brake controller. Inside, the cabin offers an executive-class environment anchored by a massive 13.4-inch GMC Premium Infotainment touchscreen with Google Built-In, a 12.3-inch reconfigurable digital Driver Information Centre, and a premium Bose sound system. The upgraded Denali Reserve Package elevates the driving experience by adding a power sunroof, a Rear Camera Mirror, and a multi-colour 15-inch Head-Up Display. First-class comfort is standard with 12-way power-adjustable, heated, and ventilated front seats with driver memory settings, a heated wrapped steering wheel, heated rear outboard seats, wireless charging, and dual-zone automatic climate control. Premium exterior utility features abound, including chrome assist steps, a factory spray-on bedliner with 120V power outlets, animated LED projector headlamps, a power sliding rear window, a Bed View Camera, and the versatile six-position GMC MultiPro Tailgate. Complete on-road awareness is provided by the Sierra HD Pro Safety suite, featuring HD Surround Vision, Adaptive Cruise Control, Trailer Side Blind Zone Alert, Rear Cross Traffic Alert, and a Driver Safety Alert Seat. Stock #T4333669 AMVIC LICENSED DEALER