2026 GMC Sierra 2500 4WD Crew Cab 159" AT4 

in Brampton 

The 2026 GMC Sierra 2500HD AT4 Crew Cab commands attention in a bold Oynx Black finish that highlights its factory-built off-road capability and unmistakable GMC styling. Its signature AT4 grille, red recovery hooks, LED lighting, raised suspension, and aggressive stance create a commanding presence that's equally at home on rugged trails or demanding job sites. Riding on 20-inch alloy wheels wrapped in all-terrain tires, the Sierra AT4 is built to tackle every challenge with confidence.

Power comes from a 6.6 L Duramax Turbo-Diesel V8 engine paired with a 10-speed Allison automatic transmission and advanced four-wheel drive. Massive torque, exceptional towing capability, and smooth power delivery make hauling heavy loads and conquering difficult terrain feel effortless.

Inside, the cabin blends premium comfort with serious capability. Leather-appointed seating, heated and ventilated front seats, a heated steering wheel, and dual-zone automatic climate control create a refined environment. The infotainment system integrates Google built-in navigation, wireless Apple CarPlay and Android Auto, Bluetooth hands-free functionality, wireless charging, and a Bose premium audio system. A surround-view camera system, advanced trailering technologies, and GMC Pro Safety provide confidence wherever the road leads.

Make your way into Gateway Chevrolet Buick GMC and see this 2026 GMC Sierra 2500HD AT4 today!
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