Experience premium comfort, diesel capability 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 strong low-end torque and confident performance for towing, hauling, highway travel and everyday driving.

Engineered for challenging roads and outdoor adventures, the AT4 features a 2-inch factory suspension lift, off-road suspension with Rancho monotube shocks, a two-speed Autotrac transfer case and protective underbody skid plates.

Its bold black exterior, distinctive AT4 grille, red recovery hooks and elevated stance create a rugged, commanding appearance. The 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 distinctive Jet Black interior with Kalahari accents delivers a refined and unmistakably AT4 environment. Heated and ventilated perforated leather front seating surfaces, a heated steering wheel and advanced digital displays help make every trip comfortable and convenient.

A 13.4-inch diagonal Premium GMC Infotainment System provides easy access to entertainment, vehicle settings and compatible smartphone features. The configurable 12.3-inch diagonal 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 off-road adventures, the GMC Sierra 1500 AT4 delivers an outstanding 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.