Vehicle Details
2026 GMC Sierra 3500 AT4 4WD V8 6.6L Diesel Mountain Home, ID Ready for heavy-duty work and refined comfort, this 2026 GMC Sierra 3500 AT4 with the powerful V8 6.6L Diesel is located in Mountain Home, ID and priced to sell offering the best price available. Built for towing and trail-ready performance, the 4WD GMC Sierra AT4 combines rugged capability with premium appointments ideal for contractors, ranchers, and weekend adventurers. Key features include Adaptive Cruise Control for relaxed highway driving, Lane Departure Warning to help keep you safer on long trips, and a Back-Up Camera for confident maneuvering on job sites. The interior boasts Leather Seats and a premium BOSE Stereo for comfortable, connected travel through Idaho and beyond. Heavy-duty suspension, advanced drivetrain, and diesel torque deliver superior towing capacity and reliable performance under load. This GMC Sierra 3500 AT4 checks all the boxes for buyers seeking durability, technology, and comfort at a competitive price. Located in Mountain Home, ID for immediate test drives and fast delivery. Don't miss the best-priced 2026 GMC Sierra 3500 AT4 4WD with the V8 6.6L Diesel contact us today to schedule your appointment and see why this truck is the smart choice for serious work and weekend escapes.
Equipment
See what's behind you with the back up camera on this 2026 GMC Sierra 3500. Engulf yourself with the crystal clear sound of a BOSE sound system in this model. This model is pure luxury with a heated steering wheel. This model has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. The leather seats in this 2026 GMC Sierra 3500 are a must for buyers looking for comfort, durability, and style. This model's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. Never get into a cold vehicle again with the remote start feature on this model. Greater towing safety becomes standard with the installed trailer brake. Set the temperature exactly where you are most comfortable in this 2026 GMC Sierra 3500. The fan speed and temperature will automatically adjust to maintain your preferred zone climate. With the keyless entry system on this vehicle you can pop the trunk without dropping your bags from the store.
New 2026 GMCSierra 3500 HD AT4
- Exterior Color
- Sterling Metallic
- Interior Color
- Jet Black with Kalahari accents, Perforated Front
- Transmission
- Automatic
- Drivetrain
- 4WD
- Engine
- 6.6L Duramax Turbo-Diesel V8 engine
- VIN
- 1GT4UVEY3TF206819
- Stock Number
- HG06055
Included Packages & Accessories
Dealer Notes
KBB.com Consumer Reviews
- 5.0
2020 GMC Denali 3500 HD Duramax is a BEAST!
By Merlinsmerc on Friday, January 22, 2021
Pulling a conventional 10,000 lb trailer over mountain passes is a whole new experience. Staying at the speed limit up long steep grades did not change the engine temperature. I feathered the accelerator up the mountain. The new 10 speed transmission is so smooth you cant feel it changing gears. This is my second GMC Denali Duramax, first being a 2016. I debated trading in for over a year, and am so happy I made the trade. Trailers always exceed by far the tongue weight posted on them, and in my case it came in at 1450 lbs. That exceeded my trucks posted maximum. The 2020 dually posts a 2,000 lb tongue weight, so now I can front load the trailer, and that reduces sway. If you can afford it, and have a heavy trailer, buy the truck! - 5.0
Love our truck
By Ron on Friday, December 11, 2020
The truck doesn’t have a sun roof which it was suppose to have - 2.0
In shop for 13 weeks so far!
By Whip on Monday, September 09, 2024
My truck has been in the shop for 13 weeks to this point with no end in sight. The Infotainment panel blew out which controls pretty much everything. Nice truck except if something goes wrong then, good luck! I would recommend looking at Fords and Rams and ask the question, how many vehicles do you have in your shop waiting for parts and for how long. I heard of one at my GMC dealership that has been waiting for 8 months! Only thing I get from GM is "we understand your frustration". Apparently they don't, or I would have my truck back long ago.
* 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 3500 HD Truck AT4
Exterior Color: Sterling Metallic
Interior Color: Jet Black with Kalahari accents, Perforated Front
Vin Number: 1GT4UVEY3TF206819
Stock: HG06055
View this 2026 GMC Sierra 3500 HD Truck AT4 for sale at Mountain Home Auto Ranch near Twin Falls.