Used 2024 GMC Sierra 3500HD SLE Diesel for Sale in Cornwall, Ontario

Serious Heavy-Duty Diesel Capability with Crew Cab Space and Long Box Utility

This used 2024 GMC Sierra 3500HD SLE at Seaway GM in Cornwall is built for drivers who need real heavy-duty capability, diesel strength, long-box utility, and confident 4x4 performance. With its 6.6L 8-cylinder diesel engine, 10-speed automatic transmission, Crew Cab Long Box configuration, and four-wheel drive system, this Sierra 3500HD is ready for towing, hauling, job sites, commercial use, farm work, trailers, equipment, and demanding Eastern Ontario driving.

Finished in Black with a Black interior, this 2024 GMC Sierra 3500HD SLE has 47,641 km and brings together HD muscle with modern GMC technology. Whether you are shopping from Cornwall, Ingleside, Morrisburg, Alexandria, Casselman, Embrun, Lancaster, Winchester, Chesterville or anywhere throughout Stormont, Dundas and Glengarry, this truck is built for people who need more than light-duty pickup capability.

Exterior Design with Heavy-Duty Presence

The Black exterior gives this GMC Sierra 3500HD SLE a bold, commanding look that fits its heavy-duty personality perfectly. This is a truck with real presence, whether it is pulling into a job site, backing up to a trailer, heading through Cornwall, Tyotown, Glendale, Summerstown Station, South Lancaster, Lancaster or Williamstown, or working on a rural property.

The Crew Cab Long Box configuration is a major advantage. With an 8.19-foot box, approximately 2.50 metres, this Sierra gives you the cargo length serious truck owners want for tools, building materials, equipment, farm supplies, recreational gear, and job-site use. The 12 fixed cargo tie-downs add practical utility for securing loads properly.

Aluminum wheels with all-terrain tires support the truck’s capable stance, while running boards and side steps make cabin access easier. The chrome front bumper, chrome rear bumper with CornerSteps, Black integrated BedSteps, integrated tailgate step, and EZ Lift tailgate with power lock/release all make the truck easier to use day after day. LED headlights, LED signature tail lamps, automatic high beams, heated power mirrors with integrated turn signals, privacy glass, and a conventional spare tire round out a tough and practical exterior package.

Interior Comfort and Work-Ready Practicality

Inside, this 2024 GMC Sierra 3500HD SLE offers a Black interior with a practical and spacious Crew Cab layout. The cloth split-bench seating gives the cabin a durable, truck-focused feel, while the 6-passenger layout makes this Sierra a strong fit for crews, families, business owners, and anyone who needs serious space.

The Crew Cab design gives rear passengers useful room, which matters when the truck is used for long workdays, road trips, towing runs, or travelling between job sites. Whether you are commuting from Chesterville, heading to work in Cornwall, or travelling between Winchester, Russell and Saint Isidore, this Sierra is built to carry people and gear with confidence.

Technology is a big part of the cabin experience. The 13.4-inch GMC Premium infotainment display gives the dashboard a modern, high-end feel, while the 12.3-inch enhanced Driver Information Centre helps keep key driving information easy to see. Rear air vents, power windows, power door locks, wrapped steering wheel, adjustable steering wheel, floor mats, compass, and pass-through rear seat all add to the everyday practicality of this heavy-duty truck.

Safety, Trailering and Technology for Serious Truck Use

This GMC Sierra 3500HD SLE includes the kind of safety and trailering technology that matters in a heavy-duty pickup. The Back-Up Camera is especially useful when reversing a large truck, lining up with a trailer, parking near equipment, or working in tighter job-site spaces.

The integrated trailer brake controller is a major feature for anyone who tows regularly. Combined with the Trailering Information Label, which provides max trailer ratings for tongue weight, conventional, gooseneck and 5th-wheel trailering, this Sierra is designed to help owners better understand and manage their towing setup. With a listed maximum trailering capacity of approximately 9,072 kg, this truck is built for serious work.

Front Collision Mitigation, Front Collision Warning, Lane Departure Warning, and Following Distance Indicator help support awareness on busy roads and longer highway drives. Stability Control, Traction Control, Tire Pressure Monitor, Buckle to Drive, Rear Seat Reminder, Driver Restriction Features, and multiple airbags round out a safety and technology package that helps make this Sierra easier to trust on the road, at the job site, and everywhere in between.

How the GMC Sierra 3500HD SLE Compares

If you are shopping for a heavy-duty diesel pickup, you may also be considering trucks like the Chevrolet Silverado 3500HD LT, Ford Super Duty F-350 XLT, Ram 3500 Big Horn or Chevrolet Silverado 2500HD LTZ. Those are all serious HD trucks, but this 2024 GMC Sierra 3500HD SLE stands out with its 6.6L diesel engine, 10-speed automatic transmission, 4x4 drivetrain, Crew Cab Long Box configuration, 6-passenger seating, all-terrain tires, and heavy-duty towing-focused setup.

Where this Sierra really makes its case is in how much practical truck value it brings. Navigation helps guide long drives across Eastern Ontario. Cruise Control makes highway travel more relaxed. Keyless Entry and Keyless Start simplify your daily routine. Bluetooth Connection, Smart Device Integration, Satellite Radio, Wi-Fi Hotspot capability, AM/FM stereo, auxiliary audio input, MP3 capability, and steering wheel audio controls help keep the cabin connected and useful whether you are working, towing, or travelling.

For shoppers who need diesel HD capability, long-box utility, 4x4 confidence, and modern GMC technology in one serious truck, this Sierra 3500HD SLE deserves close attention.

Why Buy This Sierra 3500HD from Seaway GM?

When you buy from Seaway GM in Cornwall, you are working with a dealership that understands GMC trucks, heavy-duty pickups, diesel capability, pre-owned vehicles, financing, trade-ins, service, and long-term ownership support. Seaway Chevrolet Buick GMC Ltd serves drivers, families, contractors, farmers, and business owners throughout Cornwall and the surrounding communities with a strong selection of new and pre-owned vehicles, a professional finance centre, knowledgeable sales consultants, an extensive parts department, certified technicians, and collision/body shop support through Cornwall CARSTAR.

Seaway GM has deep roots in the Seaway Valley. Dealer Principal Andre Lapointe has more than 35 years of automotive industry experience, including many years with General Motors of Canada, and the dealership has grown into a trusted GM destination for shoppers across Cornwall, Ingleside, Morrisburg, Alexandria, Casselman, Embrun, Chesterville, Winchester, Lancaster, Martintown and throughout Stormont, Dundas and Glengarry.

The team can also assist with trade-ins, financing, credit rebuilding, parts, accessories, maintenance, and service, making your purchase experience straightforward and your ownership experience easier from day one.

Imagine Yourself Behind the Wheel

Picture yourself starting this 2024 GMC Sierra 3500HD SLE diesel before a full day of work, climbing into the Black Crew Cab interior, and heading out with the confidence of 6.6L diesel power, 4x4 traction, and a long box ready for the job. Maybe you are towing a trailer, hauling equipment, driving between sites in Cornwall, heading to Morrisburg, or making a run through Alexandria, Casselman, Embrun or Winchester.

Reading about this Sierra 3500HD is one thing, but test driving it is when you will really feel how the diesel engine, 10-speed automatic transmission, Crew Cab space, Long Box utility, trailering technology, and GMC heavy-duty engineering come together.

Book Your Test Drive Today

This used 2024 GMC Sierra 3500HD SLE diesel is available now at Seaway GM in Cornwall, Ontario.

Contact Seaway GM today to book your test drive and experience this GMC Sierra 3500HD SLE for yourself.

2024 GMC Sierra 1500 Elevation 4x4 Crew Cab Diesel

Bold Style, Serious Capability, and Premium Comfort in Eastern Ontario

A Truck Built to Do More

If you’re searching for a modern full-size pickup that blends hard-working capability with everyday comfort, this 2024 GMC Sierra 1500 Elevation 4x4 Crew Cab deserves your attention. Powered by a fuel-efficient 3.0L Duramax turbo-diesel engine and paired with an automatic transmission, this Sierra is engineered to deliver confident performance whether you’re commuting through Cornwall, hauling gear near Morrisburg, or heading out toward Alexandria for the weekend. With just over 50,000 km, it strikes that perfect balance between like-new refinement and exceptional value.

Rugged, Confident Exterior Design

The Elevation trim is known for its bold, athletic look, and this Sierra wears it well. Finished in a sleek grey exterior, it features GMC’s signature Elevation grille, LED lighting elements, and sturdy alloy wheels that give it a commanding presence on the road. The Crew Cab configuration offers added versatility for families and job sites alike, while the 4x4 drivetrain ensures confident traction through Eastern Ontario winters in areas like Ingleside, Winchester, and South Lancaster.

Comfortable and Purpose-Built Interior

Step inside and you’ll find a cabin designed around the driver. The black interior offers a clean, modern layout with a power-adjustable driver’s seat and a heated steering wheel, ideal for cold mornings in Moose Creek or Chesterville. The infotainment touchscreen integrates smartphone connectivity, making navigation, calls, and music effortless whether you’re heading into Casselman or cruising rural roads around Martintown. With ample rear-seat space, the Crew Cab layout ensures passengers enjoy the ride just as much as the driver.

Safety and Technology You Can Rely On

GMC’s focus on safety and smart technology is evident throughout this Sierra 1500. A rear-view camera enhances confidence when parking or hitching up, while available driver-assist technologies help keep you alert and protected on longer drives. Whether you’re navigating traffic in Cornwall or travelling between communities like Saint-Isidore and Embrun, this truck is designed to help you stay secure and in control.

How It Stands Out from the Competition

When compared to other full-size pickups like the Ford F-150 or Ram 1500, the Sierra 1500 Elevation distinguishes itself with its refined diesel efficiency, bold GMC styling, and well-balanced ride quality. Features such as the heated steering wheel, power driver’s seat, and intuitive infotainment system make it especially appealing for drivers who want both work-ready strength and everyday comfort while travelling throughout Stormont, Dundas and Glengarry.

Why Buy from Seaway GM

At Seaway Chevrolet Buick GMC Ltd, you’re working with a dealership deeply rooted in the community and backed by decades of General Motors expertise. From knowledgeable sales professionals to certified technicians and flexible financing solutions, Seaway GM offers a one-stop automotive experience trusted by drivers across Eastern Ontario. Every pre-owned vehicle is carefully inspected so you can buy with confidence.

Picture Yourself Behind the Wheel

Imagine settling into the driver’s seat, hands warmed by the heated steering wheel, as the Duramax diesel hums smoothly beneath the hood. Whether you’re heading out along the St. Lawrence River, tackling daily drives around Williamstown and Glendale, or planning your next adventure, this Sierra is ready to be part of it all. Reading about it is one thing — experiencing it on the road is where it truly shines.

Book Your Test Drive Today

The next step is simple. Visit Seaway GM in Cornwall, Ontario, or contact our team today to book your test drive of this 2024 GMC Sierra 1500 Elevation. Come see firsthand why it’s one of the most well-rounded and capable trucks on the road.