![2026 GMC Sierra 3500HD AT4 * Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * 6.6L Duramax Diesel [0]](https://content.homenetiol.com/320x240/ac00c02d20ea4af8b4972c1a781e5388.jpg)
![2026 GMC Sierra 3500HD AT4 * Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * 6.6L Duramax Diesel [1]](https://content.homenetiol.com/320x240/9d2e3638799f43dca2376a5ffc1fb4e0.jpg)
![2026 GMC Sierra 3500HD AT4 * Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * 6.6L Duramax Diesel [2]](https://content.homenetiol.com/320x240/c0af165bbe04471caf2c6fb39b35980d.jpg)
![2026 GMC Sierra 3500HD AT4 * Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * 6.6L Duramax Diesel [3]](https://content.homenetiol.com/320x240/f3d0eaf365c64bf8a3fbc24a45a59250.jpg)
![2026 GMC Sierra 3500HD AT4 * Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * 6.6L Duramax Diesel [4]](https://content.homenetiol.com/320x240/d959e01575204b25a17c733ef5401f1d.jpg)
New 2026 GMC Sierra 3500HD
Vehicle Summary
- Condition: New
- Certified: Yes
- Body Style: Pickup
- Fuel Type: Diesel
- KMS: 55
- Engine: 6.6L Duramax Diesel
- Transmission: 10-Speed Automatic
- Drivetrain: Four Wheel Drive
- Exterior Color: Coastal Dune
- Interior Color: Jet Black with Kalahari accents
- City MPG:
- Highway MPG:
Vehicle Details
* Technology Pkg * Gooseneck/5th Wheel Prep Pkg * AT4 Premium Plus Pkg * Power Sunroof * Rear Camera Mirror * Head-Up Display * Off-Road High Clearance Steps * Hunting for a powerhouse truck that can tackle the tough jobs? Look no further than the 2026 GMC Sierra 3500HD AT4. Resplendent in its Coastal Dune exterior with a luxurious Jet Black interior and Kalahari accents, this tough diesel-powered giant is equipped with an impressive 6.6L Turbo-Diesel V8 engine. Ready for any challenge with 470 horsepower and 975 lb-ft of torque, it includes a heated steering wheel, heated front & rear seats, ventilated front seats, and rain-sensing wipers for a blend of comfort and utility. This model is ready for rough terrains and heavy loads, boasting the GMC Multipro Tailgate, Gooseneck/5th Wheel Prep pkg, 4x4 capability, and the Off-Road High Clearance Steps. Safety isn't overlooked, with features such as front collision alert, lane departure warning, blind spot monitor, and the HD Surround Vision system to keep you secure on every journey. The remote engine start and keyless open enhance both convenience and comfort, ensuring a pleasant ride in any weather. Stock # T4391591 AMVIC Licensed Dealer.
Vehicle Highlights
Back-Up Camera
Heated Seats
Cooled Seat(s)
Remote Start
Keyless Start
All advertised vehicles are subject to actual dealer availability. 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 Catalyst IQ 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 Goods and Services Tax (GST). For official information, refer to the Government of Canada website.
