13.4 Diagonal Colour Touchscreen with Google Built-In | AT4 Preferred Package | Power Sunroof | Gooseneck/5th Wheel Prep Package | Bose® Premium Speakers | HD Surround Vision with Bed View | Heated & Ventilated Front Seats | Wireless Charging The 2026 GMC Sierra 3500HD AT4 Crew Cab 4WD delivers an exceptional blend of rugged off-road performance and premium luxury, making a powerful statement in an Onyx Black exterior paired with a distinctive Jet Black and Kalahari accented leather interior. Driven by the formidable Duramax 6.6L V8 Turbo Diesel engine matched to a 10-speed automatic transmission, this heavy-duty truck handles demanding tasks with a 2-speed active electronic Autotrac transfer case, an auto-locking rear differential, digital variable steering, and an integrated trailer brake controller. The exterior setup stands out with a power sunroof, animated LED projector headlamps, LED fog lamps, RainSensing wipers, LED roof marker lamps, and dealer-installed body-colour wheel arch mouldings. Ready for heavy-duty work, the bed features a factory spray-on liner, rear wheelhouse liners, LED cargo lighting, the multi-functional GMC MultiPro Tailgate, and a hitch area light. Inside, the cabin functions as a quiet, technology-driven sanctuary. The modern dashboard houses a massive 13.4 diagonal colour touchscreen with Google Built-In navigation alongside a 12.3 digital reconfigurable driver display. Upgraded with the AT4 Preferred Package, the spacious interior layout adds a power sunroof, a power-sliding rear window, a universal home remote, a wireless smartphone charging pad, and a premium Bose® sound system. Tailored for complete Canadian comfort, the layout includes a remote starter, dual-zone automatic climate control, a heated wrapped steering wheel, premium floor liners, a rear window defogger, heated rear outboard seats, and a 10-way power-adjustable driver's seat with heated and ventilated front bucket seats featuring memory settings. Managing large trailers and tight spaces is simplified with the Gooseneck/5th Wheel Prep Package, Hitch View, Adaptive Cruise Control, HD Surround Vision with Bed View, Front and Rear Park Assist, and Trailer Side Blind Zone Alert. Stock #T4313575 AMVIC LICENSED DEALER