This 2017 GMC Sierra 3500HD SLT in a refined grey finish is a commanding full-size pickup built to handle the demands of work, recreation, and long-haul towing with confidence and ease. With just over 99,000 kilometers, this truck is a prime example of durability and long-term value, bolstered by one of the most respected diesel powertrains in the heavy-duty market — the legendary Duramax 6.6-liter V8 turbo-diesel engine paired with an Allison 1000 6-speed automatic transmission. Whether you’re hauling equipment, towing your fifth-wheel, or navigating unpredictable terrain, this Sierra HD delivers relentless strength, upscale comfort, and undeniable presence.Â
Under the hood, the 6.6L Duramax turbo-diesel V8 churns out an impressive 445 horsepower and a pavement-twisting 910 lb-ft of torque. Known for its low-end grunt, smooth power delivery, and bulletproof reputation, this engine makes easy work of towing and payloads, backed by a transmission designed specifically to handle sustained heavy loads with confidence and consistency. Mated to the Allison transmission, this powertrain combination is lauded for its durability and precise, seamless gear shifts — essential whether you're creeping through a job site or pulling a fully loaded trailer up a mountain pass. When properly equipped, the Sierra 3500HD can tow up to 23,300 lbs with a gooseneck or fifth-wheel configuration and manage payloads of over 5,500 lbs, giving you the strength to take on virtually any task.Â
The SLT trim offers a well-rounded blend of hard-working function and upscale features, making it ideal for someone who needs serious truck capability without sacrificing daily usability or comfort. Inside, this crew cab model seats up to five with ample space in both the front and rear. The front bucket seats are leather-appointed, heated, and power-adjustable with driver memory settings, while the rear seats offer generous legroom and fold-up capability to expand secure in-cabin storage. Real aluminum and soft-touch surfaces throughout the cabin elevate the feel beyond typical work truck standards. With a focus on practicality, storage options include a deep center console, rear seatback compartments, under-seat bins, and large door pockets for tools, electronics, and paperwork.Â
The dashboard houses GMC’s 8-inch IntelliLink infotainment system with integrated navigation, voice command, Bluetooth, and smartphone compatibility via Apple CarPlay and Android Auto. A Bose premium audio system fills the cabin with crisp sound, whether you're streaming music or taking hands-free calls. With built-in 4G LTE Wi-Fi hotspot capability, this Sierra can serve as a mobile office on the road, keeping you connected wherever work or play takes you. Keyless entry and remote start enhance day-to-day convenience, especially in cold weather, while dual-zone automatic climate control ensures year-round comfort for both driver and passengers.Â
This Sierra 3500HD SLT is also equipped with a wide range of trailering features that help simplify every haul. It comes with an integrated trailer brake controller, Trailer Sway Control, and Tow/Haul mode to help maintain stability and reduce stress on the drivetrain during loaded driving. The rearview camera system adds visibility when backing up to a trailer, while the diesel exhaust brake provides additional control when descending steep grades with heavy loads — a crucial safety advantage for long-distance towing or driving through hilly terrain.Â
In terms of safety, the SLT model includes a well-rounded set of driver aids for added peace of mind. Front and rear park assist help guide this large truck into tight spaces, while features like StabiliTrak electronic stability control, hill start assist, and traction control all contribute to maintaining command in adverse conditions or with unpredictable cargo weights. Daytime running lights, fog lamps, and a full array of front and side curtain airbags round out the active and passive safety systems.Â
Visually, this 2017 Sierra 3500HD makes a strong impression with its bold chrome-accented grille, signature C-shaped LED lighting, and high-strength steel box. The grey exterior gives it a timeless, professional look that fits equally well at a job site or a country club. Chrome bumpers and mirror caps, polished aluminum wheels, and functional features like the CornerStep rear bumper and cargo tie-down hooks complete the truck’s blend of utility and style. A spray-in bedliner ensures the box is ready for whatever you need to load, and it helps protect against dents and corrosion over time.Â
Despite being a 2017 model, this truck remains highly competitive thanks to its proven engine, rock-solid drivetrain, and a feature set that still outpaces many newer trucks in terms of real-world usability and toughness. With just over 99,000 kilometers, it’s seen less wear than most of its peers and has many years of dependable service left, especially with the long lifespan diesel engines like the Duramax are known for. Whether you're an independent contractor, a small business owner, or someone with a passion for trailering and off-grid adventures, this Sierra HD SLT delivers a balance of brute strength and intelligent design that you can count on day in and day out.Â
Write ups are completed by ChatGPT. The Information generated by ChatGPT is based on machine learning algorithms and natural language processing technology. It may not always be accurate and should be verified through additional sources.Â
Stock #258-50880A Dealer #41628 Documentation fee $699Â
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Air Conditioning
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Backup Camera
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Bluetooth Connection
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Cruise Control
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Heated Seats
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Keyless Entry
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Leather Seats
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Navigation System
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Power Seats
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Power Windows
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Remote Start
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Satellite Radio
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Wi-Fi Hotspot
Find Us
This vehicle is located at one of our other Bannister Automotive Group dealerships. Please contact us at leads@bannistergm.ca or by phone 780-723-3351 to arrange a test drive.