2024 GMC Sierra 1500 AT4 4x4 Crew Cab 6.6 ft. box

Dominate Eastern Ontario Roads in This 2024 GMC Sierra 1500 AT4 Diesel 4x4

If you're looking for a premium, off-road-ready full-size pickup that blends rugged capability with refined comfort, the 2024 GMC Sierra 1500 AT4 with the legendary 3.0L Duramax Turbo-Diesel engine is the truck you’ve been waiting for. With just 44,514 km and packed with top-tier features, this Sierra AT4 stands out not only on the road, but also in the segment. Whether you're from Cornwall, Tyotown, Martintown, or as far as Embrun and Chesterville, this truck is ready to take on your lifestyle — from job site duties to weekend getaways.

Rugged and Refined Exterior That Turns Heads

The Onyx Black exterior perfectly complements the AT4’s bold design cues, including the signature AT4 grille and aggressive stance. Its 18" machined aluminum wheels with dark grey accents ride confidently on off-road terrain, supported by the AT4’s off-road suspension package with Rancho monotube shocks. Whether you're hauling gear near Ingleside or hitting the trails around Moose Creek, the spray-on bedliner with a GMC logo protects your cargo space in style. LED headlamps and taillamps provide excellent visibility while adding a modern edge to its muscular profile.

Premium Comfort and Practicality Inside

Step into the Jet Black interior accented with Kalahari stitching and experience true comfort. This Sierra doesn’t just look the part — it pampers you and your passengers with heated and ventilated front seats, heated rear seats, and dual-zone automatic climate control for year-round driving comfort from Maxville to Morrisburg. The 10-way power front seats provide customizable support, while the heated leather-wrapped steering wheel ensures a comfortable grip on chilly Eastern Ontario mornings.

Advanced Safety and Technology for Every Drive

The Sierra AT4 is equipped with the latest driver-assistance technologies to keep you confident behind the wheel. With HD Surround Vision, Front and Rear Park Assist, Rear Cross Traffic Braking, and Lane Keep Assist with Lane Departure Warning, this truck keeps you aware of your surroundings whether you're navigating tight city streets in Alexandria or reversing out of your driveway in Lancaster. Hitch Guidance with Hitch View makes towing smarter and safer — a big win for weekend warriors and tradespeople alike.

Outshining the Competition

Thinking about the Ford F-150 Tremor or Ram 1500 Rebel? The Sierra 1500 AT4 stands tall with its exclusive combination of luxury, diesel efficiency, and trail-ready features. The Bose Premium Sound System delivers an immersive audio experience, while Wireless Apple CarPlay and Android Auto keep you seamlessly connected on drives through South Lancaster or Winchester. Add in Remote Start and SiriusXM with a 3-month trial, and you've got a cabin that works as hard as you do.

Why Buy from Seaway GM?

At Seaway Chevrolet Buick GMC Ltd. in Cornwall, we’ve been proudly serving Eastern Ontario’s communities — from St-Albert to Saint Isidore and beyond — with expert knowledge, personalized service, and a massive selection of quality pre-owned vehicles. Our dealership is a one-stop destination with in-house financing, a fully-equipped service centre, and a team that knows GMC trucks inside and out. When you buy from Seaway GM, you're not just getting a vehicle — you're joining a family with over three decades of automotive excellence.

Imagine This Truck in Your Driveway

Picture yourself behind the wheel of this 2024 Sierra 1500 AT4, cruising the country roads between Williamstown and Summerstown Station, or towing your gear into Churchill Heights with confidence. This truck isn’t just a tool — it’s an extension of your lifestyle. But reading about it is one thing… experiencing it is everything.

Book Your Test Drive Today

Ready to see what the 2024 GMC Sierra 1500 AT4 can do? Contact us at Seaway GM in Cornwall and book your test drive now. Let’s get you behind the wheel of this diesel-powered powerhouse today.

Dominate Eastern Ontario Roads in This 2024 GMC Sierra 1500 AT4 Diesel 4x4

If you're looking for a premium, off-road-ready full-size pickup that blends rugged capability with refined comfort, the 2024 GMC Sierra 1500 AT4 with the legendary 3.0L Duramax Turbo-Diesel engine