Finished in Summit White with a Jet Black and Kalahari interior, this 2026 GMC Sierra 1500 AT4 combines premium luxury with uncompromising off-road capability. Powered by the efficient Duramax 3.0L Turbo-Diesel engine and equipped with the AT4 Premium and Technology Packages, this Sierra is engineered to tackle tough terrain while delivering exceptional comfort, advanced technology, and impressive towing capability.Under the hood, the legendary Duramax 3.0L Turbo-Diesel is paired with a smooth 10-speed automatic transmission, delivering outstanding torque, excellent fuel efficiency, and confident towing performance. With a factory 2-inch suspension lift, Autotrac 2-speed transfer case, monotube shocks, and skid plates, the AT4 is built to go wherever the road or trail leads.Performance & Capability• Duramax 3.0L Turbo-Diesel engine • 10-speed automatic transmission • Four-wheel drive (4WD) • Autotrac 2-speed transfer case • Factory 2" off-road suspension lift with monotube shocks • Automatic locking rear differential • Skid plates • Hill Descent Control • Integrated trailer brake controller • In-Vehicle Trailering App • 120V power outlets in the cab and cargo bed • Trailering capabilityInterior Comfort & Convenience• Heated and ventilated front bucket seats • Heated rear outboard seats • 10-way power front seats • Driver seat and mirror memory • Heated leather-wrapped steering wheel • Power tilt and telescoping steering column • Wireless phone charging • Remote vehicle start • Rear sliding power window • Premium floor liners • Universal Home Remote • Power sunroofTechnology & Connectivity• GMC Premium Infotainment System with 13.4" touchscreen • Google Built-In compatibility with navigation • Wireless Apple CarPlay & Android Auto • 12.3" digital Driver Information Centre • Bose premium audio system • Bluetooth connectivity • SiriusXM with 3-year subscription • OnStar Basics connected services • Bed View Camera • Rear Camera Mirror • 15" Head-Up DisplaySafety & Driver Assistance• Adaptive Cruise Control • HD Surround Vision • Forward Collision Alert • Automatic Emergency Braking • Front Pedestrian Braking • Lane Keep Assist with Lane Departure Warning • Trailer Side Blind Zone Alert • Rear Cross Traffic Braking • Rear Pedestrian Alert • Front and Rear Park Assist • Following Distance Indicator • Safety Alert Seat • IntelliBeam automatic high beams • Teen Driver technologyExterior Highlights• Summit White exterior • 20" machined aluminum wheels with Carbon Grey Metallic accents • Goodyear Wrangler Territory MT tires • GMC MultiPro Tailgate • Spray-on bedliner • LED cargo box lighting • LED headlamps, fog lamps, and taillamps • Power-folding heated mirrors with driver-side auto-dimming • Rain-sensing windshield wipers • Off-road high-clearance assist stepsWhether you're towing, exploring remote trails, or enjoying the comfort of a premium truck on the highway, the 2026 Sierra 1500 AT4 delivers exceptional diesel performance, advanced technology, and rugged capability in one impressive package.2 Year/24,000 kilometer* Complimentary Oil Changes (2 total)3 Year/60,000 kilometer* Base Warranty Coverage5 Year/100,000 kilometer* Powertrain Component Warranty Coverage5 Year/100,000 kilometer* Courtesy Transportation and 24/7 Roadside Assistance6 Year/160,000 kilometer* Sheet Metal (Rust Through) Perforation Warranty Coverage*Whichever Comes First.Price Includes HD Flaps & 6” Tube Steps.Price Includes Dealer Fee.Price Excludes PST & GST.Financing Options Available, Call For More Details. *While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any error or omissions contained on these pages. Please verify any information in question with Chapman Motors Ltd.