Experience diesel capability, premium comfort and authentic off-road performance in this new 2026 GMC Sierra 1500 AT4 Crew Cab Short Box 4-Wheel Drive, available at MacFarlane Chevrolet Buick GMC in Petrolia, Ontario.

Powered by the 3.0L Duramax Turbo-Diesel inline-six engine and paired with a smooth 10-speed automatic transmission, this Sierra AT4 delivers impressive low-end torque and confident performance for towing, hauling, highway travel and everyday driving.

Built for drivers who want premium refinement with genuine off-road capability, the AT4 includes a 2-inch factory suspension lift, off-road suspension with Rancho monotube shocks, a two-speed Autotrac transfer case and protective underbody skid plates.

The bold AT4 exterior features distinctive GMC styling, red recovery hooks and a rugged, elevated stance. Its spacious Crew Cab provides generous passenger room, while the versatile short cargo box offers practical space for tools, equipment, recreational gear and weekend projects.

Inside, the unique Jet Black interior with Kalahari accents creates a refined and unmistakably AT4 environment. Heated and ventilated front seats, a heated steering wheel, advanced digital displays and modern connectivity help make every drive more comfortable and convenient.

The large touchscreen infotainment system provides convenient access to entertainment, vehicle settings and compatible smartphone features through wireless Apple CarPlay and Android Auto. A configurable digital Driver Information Centre keeps important driving and vehicle information clearly visible.

Whether you need a capable work truck, a comfortable daily driver or a premium pickup prepared for outdoor adventures, the GMC Sierra 1500 AT4 delivers an excellent combination of diesel performance, advanced technology and rugged design.

Visit MacFarlane Chevrolet Buick GMC, proudly serving Petrolia, Sarnia, Strathroy, London, Lambton County and Southwestern Ontario since 1922.

Call 519-882-1090 today to confirm availability or schedule your test drive.