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![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [0]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_1.jpg)
![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [1]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_2.jpg)
![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [2]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_3.jpg)
![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [3]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_4.jpg)
![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [4]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_5.jpg)
![2026 GMC Sierra 3500HD AT4 4WD Crew Cab 159″ AT4 Turbocharged Diesel V8 6.6L/ [5]](https://gm-ca.evnassets.shiftdigitalinventory.com/imagesvga/1GT4UVEY4TF393116_6.jpg)
" * ENGINE DURAMAX 6.6L TURBO-DIESEL V8 * * HIGH IDLE SWITCH * * UPFITTER SWITCH KIT * Discover the ultimate blend of power and versatility with the GMC Sierra 3500HD AT4, an exceptional Crew Cab Pickup available right here in Fort St. John. This robust powerhouse is driven by the mighty Duramax 6.6L Turbo-Diesel V8 engine, delivering an impressive 470 horsepower and 975 lb-ft of torque, ensuring that no task is too daunting. The 10-speed automatic transmission provides smooth and seamless shifts, ensuring optimal performance whether you're towing, hauling, or simply cruising. Designed with the demanding driver in mind, this Sierra 3500HD comes equipped with a High Idle Switch, allowing you to increase the engine's idle speed for enhanced accessory performance. The Upfitter Switch Kit offers five configurable circuits, perfect for integrating aftermarket electrical accessories, making it easier than ever to customize your truck to suit your needs. The Sierra 3500HD also features the Snow Plow Prep/Camper Package, which includes essential components such as a 220-amp alternator and skid plates, preparing your truck for the harshest conditions. The AT4 Preferred Package adds convenience with a Universal Home Remote and a power sliding rear window, making this truck as comfortable as it is capable. With a focus on safety and technology, you'll enjoy the benefits of the Multicolour 15"" Diagonal Head-Up Display, Rear Camera Mirror, and a suite of driver assistance features like Front Collision Mitigation and Lane Departure Warning. All these features combine to create a vehicle that's not only powerful but also sophisticated and secure. "
All advertised vehicles are subject to actual dealer availability. Finance offers may not be combined with all other offers. Certain vehicles listed may not be available, or may have different prices. Prices exclude state tax, license, document preparation fee, smog fee, and finance charges, if applicable. Vehicle option and pricing are subject to change. Prices include all dealer rebates and dealer incentives. Pricing and availability varies by dealership. Please check with your dealer for more information. Prices do not include dealer charges, such as advertising, that can vary by manufacturer or region, or costs for selling, preparing, displaying or financing the vehicle. Images displayed may not be representative of the actual trim level of a vehicle. Colors shown are the most accurate representations available. However, due to the limitations of web and monitor color display, we cannot guarantee that the colors depicted will exactly match the color of the car. Information provided is believed accurate but all specifications, pricing, and availability must be confirmed in writing (directly) with the dealer to be binding. Neither the Dealer nor Fox Dealer Interactive is responsible for any inaccuracies contained herein and by using this application you the customer acknowledge the foregoing and accept such terms.
Net Price DOES NOT include dealer or vendor installed upgrades, accessories, or added after market items. Those products are OPTIONAL and can be purchased for an additional cost. Call For Details!*
Final prices are price shown plus government fees and taxes, any finance charges, any dealer document preparation charge, and any emission testing charge.
Effective September 1st, 2022, vehicles sold in Canada above $100,000 pre-tax retail price may be subject to a luxury tax of either 20% on the amount above $100,000 or a flat 10% on the full value. This tax is in addition to the Provincial Sales Tax (PST) and the Goods and Services Tax (GST). For official information, refer to the Government of Canada website.
At Murray GM in Fort St. John, we’re proud to be a trusted part of the community, on and off the road. Whether you're purchasing your next vehicle or visiting for service or parts, our goal is simple: provide a professional, straightforward experience where you’re taken care of every step of the way.

Clear communication, honest advice, and a team focused on helping you make the right decision for your needs.

A welcoming environment where your time is respected and you can move forward with confidence.

Our relationship doesn't end when you drive away, we're here throughout your ownership journey.

Dedicated technicians and advisors committed to keeping your vehicle running at its best.
Professional. Straightforward. Customer-focused.
That's the way we do things at Murray GM in Fort St. John.