Vehicle Details
2026 GMC Sierra 2500 AT4 4WD Mountain Home ID Best Price Discover power and capability with this 2026 GMC Sierra 2500 AT4, now available in Mountain Home, ID. Equipped with a robust V8 6.6L Diesel engine and four-wheel drive, this GMC Sierra 2500 AT4 delivers exceptional towing and hauling performance for work or recreation. Rugged AT4 off-road enhancements and premium trail-ready suspension ensure confidence across Idaho's mountain roads and backcountry. Comfort and technology are built in: a back-up camera simplifies parking and trailer hookups, Hands Free Bluetooth keeps calls and media seamless, and Android Auto integrates navigation and apps for safe, connected driving. Advanced safety features include Lane Departure Warning and Cross-Traffic Alert to help protect you and your passengers on busy highways and crowded lots. This GMC Sierra 2500 AT4 combines heavy-duty capability with refined interior materials, contractor-friendly utility and modern infotainment. Whether you're towing a camper, hauling heavy loads, or tackling rough terrain, this diesel-powered 4WD truck is engineered to handle the toughest jobs. Located in Mountain Home, ID, this GMC Sierra 2500 AT4 is offered at the best price competitive, fair, and ready for immediate test drives. Contact us today to schedule a viewing and experience this hardworking, tech-forward diesel truck for yourself.
Equipment
The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. The vehicle's Lane Departure Warning helps keep you in your lane. Protect this 2026 GMC Sierra 2500 from unwanted accidents with a cutting edge backup camera system. Never get into a cold vehicle again with the remote start feature on the vehicle. The GMC Sierra offers Android Auto for seamless smartphone integration. Engulf yourself with the crystal clear sound of a BOSE sound system in this model. The vehicle is pure luxury with a heated steering wheel. This model features a hands-free Bluetooth phone system. Apple CarPlay: Seamless smartphone integration for this unit - stay connected and entertained on the go! This unit has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. This model's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing. Keep safely connected while in this unit with OnStar. You may enjoy services like Automatic Crash Response, Navigation, Roadside Assistance and Hands-Free Calling.
New 2026 GMCSierra 2500 HD AT4
- Exterior Color
- Coastal Dune
- Interior Color
- Jet Black with Kalahari accents, Perforated Front
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L Duramax Turbo-Diesel V8 engine
- VIN
- 1GT4UPEY1TF147524
- Stock Number
- HG06029
Included Packages & Accessories
Dealer Notes
KBB.com Consumer Reviews
- 2.0
Transmission trash
By Jason on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk - 5.0
Fantastic truck
By Jjj on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck! - 3.0
Don't judge a truck by the appearance
By jmil on Wednesday, May 11, 2022
Great truck, loved it until the DEF tank heater malfunctioned and shut down the truck. Now sitting waiting for the replacement tank for over 10 weeks. Turns out every HD truck 2020 and 2021 has the same problem and all will need this replacement that is being produced at a snail's pace by GM. Per the dealership, last count, over 9000 trucks like mine are idle waiting for this part. $65000 waste of money and terrible service by GMC (not the local dealership).
* MSRP is the Manufacturer's Suggested Retail Price (MSRP) of the vehicle. It does not include any taxes, fees or other charges. Pricing and availability may vary based on a variety of factors, including options, dealer, specials, fees, and financing qualifications. Consult your dealer for actual price and complete details. Vehicles shown may have optional equipment at additional cost.
* The estimated selling price that appears after calculating dealer offers is for informational purposes, only. You may not qualify for the offers, incentives, discounts, or financing. Offers, incentives, discounts, or financing are subject to expiration and other restrictions. See dealer for qualifications and complete details.
* The advertised price does not include sales tax, vehicle registration fees, other fees required by law or finance charges. A doc fee, up to $499, may be added to the price of the vehicle.
* Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.
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NEW
2026 GMC Sierra 2500 HD Truck AT4
Exterior Color: Coastal Dune
Interior Color: Jet Black with Kalahari accents, Perforated Front
Vin Number: 1GT4UPEY1TF147524
Stock: HG06029
View this 2026 GMC Sierra 2500 HD Truck AT4 for sale at Mountain Home Auto Ranch near Twin Falls.