Used 2026 GMC Sierra HD for sale in Castle Rock
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Vehicle Details
6 km
Unknown
4WD
Diesel
V-Shaped
Unknown
Pickup
Owners
What was with this car history VIN 1GT4UPEY0TF289850?
Popular features
Seller description
Discover the ultimate off-road companion in the 2026 GMC Sierra 2500HD AT4. Engineered to conquer any terrain, this rugged powerhouse is ready to take your adventures to new heights. - Durable Duramax 6.6L V8 Turbodiesel engine with 470 horsepower and 975 lb-ft of torque - Capable 4WD system with 2-speed transfer case and off-road-tuned suspension - Upfitter switch kit for easy installation of aftermarket electrical accessories - All-weather floor liners and power retractable assist steps for added convenience - Gooseneck/5th wheel prep package for towing versatility Indulge in premium features that elevate your driving experience: - Bose premium 7-speaker sound system - SiriusXM with 360L trial subscription - Steering wheel audio controls - Electric rear-window defogger - 120-volt bed-mounted power outlet The 2026 GMC Sierra 2500HD AT4 is more than a truck - it's a gateway to unparalleled off-road adventures. Experience the thrill of conquering any terrain in uncompromising style and comfort. Visit our showroom today to discover the ultimate expression of power and capability. Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 06/30/2026 $500 - GM Military Cash Allowance Program. Exp. 01/04/2027 $903 Fuel Credit for Full Size Vehicle. See Dealer For Full Details. Expires 8/1/26.
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Frequently Asked Questions About the 2026 GMC Sierra HD
The average price of a used 2026 GMC Sierra HD is $69,222 based on 23,000 listings currently available nationwide. Prices range from $10,000 to $111,945 depending on mileage, condition, and location. This particular Sierra HD in Castle Rock, CO is listed at $83,022.
Used 2026 GMC Sierra HD vehicles on our marketplace have an average of 14,593 miles. This specific vehicle has 4 miles on the odometer. You can compare mileage across all available units on the GMC Sierra HD listings page.
Reliability varies by model year, maintenance history, and driving conditions. We recommend checking the vehicle history report and having an independent inspection before purchase.
The 2026 GMC Sierra HD runs on Diesel. Exact fuel economy figures vary by trim level and driving conditions. Check fueleconomy.gov for EPA estimates specific to this model year.
There are 769,898 used Pickup vehicles priced under $100,000 currently listed on our marketplace. Browse all options on the Used Pickup under $100,000 page. You can also narrow your search to Used GMC vehicles under $100,000 if you prefer to stay with the GMC brand.
