Experience premium comfort, impressive diesel capability and authentic off-road engineering 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.

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

Its bold exterior features distinctive AT4 styling, red recovery hooks and a rugged, elevated stance. 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 unique Jet Black interior with Kalahari accents creates a refined and unmistakably AT4 environment. Heated and ventilated front leather seating surfaces and a heated steering wheel help provide premium comfort throughout the year.

A large touchscreen infotainment system and configurable digital Driver Information Centre place entertainment, connectivity, vehicle settings and important driving information within easy reach.

Whether you need a capable work truck, a comfortable daily driver or a premium pickup prepared for off-road adventures, the 2026 GMC Sierra 1500 AT4 delivers an outstanding combination of diesel performance, advanced technology and rugged GMC 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.