2026 GMC Sierra 2500 HD AT4



In Stock
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  • $89,015 FINAL PRICE

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Vehicle Information

VIN: 1GT4UPEY8TF221828
Stock #: 260492
Model Code: TK20743
  • Condition New
  • Body Style Crew Cab
  • Exterior Color Sterling Metallic
  • Interior Color Jet Black With Kalahari Accents, Perforated Front Leather Seat Trim
  • Engine 6.6L Duramax Turbo-Diesel V8 engine
  • Transmission Automatic
  • Fuel Type Diesel Fuel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

Vehicle Details
2026 GMC Sierra 2500 AT4 4WD — powerful capability meets rugged sophistication in Stephenville, TX. This heavy-duty GMC Sierra is powered by a V8 6.6L Diesel engine, delivering exceptional torque for towing and hauling, paired with advanced 4WD traction for confident performance on highway, ranch, or trail. The AT4 trim adds an Off-Road Package engineered for tougher terrain, including specialized suspension and protective skid plates so you can go farther with confidence. Stay safe and connected with Lane Departure Warning and Cross-Traffic Alert, helping prevent collisions in busy driving and parking situations. A Back-Up Camera provides clear rear visibility for safer maneuvering and hitching. Inside, XM Radio keeps long drives entertaining and connected on the road. This GMC Sierra 2500 combines best-in-class utility with premium comfort and modern driver aids, making it ideal for contractors, outdoor enthusiasts, and families who need serious capability without sacrificing daily usability. Located in Stephenville, TX, this truck is offered at the best price in the area — competitive financing and trade-in options available. Don't miss a chance to own a work-ready, off-road-capable V8 diesel truck equipped with safety tech and premium features. Schedule a test drive in Stephenville today and experience the performance and value firsthand.

Equipment
It is pure luxury with a heated steering wheel. This 2026 GMC Sierra 2500 is equipped with the latest generation of XM/Sirius Radio. Engulf yourself with the crystal clear sound of a BOSE sound system in this vehicle. The vehicle features steering wheel audio controls. Never get into a cold vehicle again with the remote start feature on it. Apple CarPlay: Seamless smartphone integration for this vehicle - stay connected and entertained on the go! This unit's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. This GMC Sierra comes equipped with Android Auto for seamless smartphone integration on the road. The leather seats in this 2026 GMC Sierra 2500 are a must for buyers looking for comfort, durability, and style. The vehicle has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. See what's behind you with the back up camera on this model.

Packages
AT4 Premium Plus Package: Power Sunroof; Technology Package; Power-Retractable Black Assist Steps. Preferred Equipment Group 4SB: LED Cargo Area Lighting; Trailer Side Blind Zone Alert; SiriusXM with 360L Trial Subscription; Remote Vehicle Starter System; Safety Alert Seat; Ultrasonic Front and Rear Park Assist; Trailer Cam Provisions and Trailer Viewing Software; Electric Rear-Window Defogger; Floor-Mounted Center Console; Gloss Black Header Grille and Grille Insert Bars; Unauthorized Entry Theft-Deterrent System; Bed View Camera with Two Trailer Camera Provisions; Front Rain-Sensing Wipers; Sierra HD Pro Safety; Wireless Phone Projection; 2 USB Ports; Rear Cross Traffic Alert; 120-Volt Instrument Panel Power Outlet; 2 Charge/data USB Ports Inside Center Console; Heated Driver and Front Outboard Passenger Seats; Wireless Charging; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; 2 Charge-Only Rear USB Ports; OnStar Services Capable; 120-Volt Bed Mounted Power Outlet; He

All Features

AT4 Premium Plus Package


    • DriveType
      • DriveType: Four Wheel Drive
    • Fuel Economy
      • City: 0 MPG
      • Hwy: 0 MPG
      • Combined: 0 MPG
    • Fuel System
      • Fuel System: Direct Injection
    • Fuel Tank Capacity
      • Fuel Tank Capacity: 36 gal
    • Fuel Type
      • Fuel Type: Diesel Fuel
    • Horse Power
      • Horse Power: 470
    • Rear Wheel
      • Rear Wheel: Single
    • Trailering Capacity
      • Trailering Capacity: 18500 lbs

    Warranty

    • Corrosion: 3 Years/36,000 Miles Rust-Through 6 Years/100,000 Miles
    • Roadside Assistance: 5 Years/60,000 Miles 3.0L & 6.0L Duramax® Turbo-Diesel Engines, And Certain Commercial, Government, And Qualified Fleet Vehicles: 5 Years/100,000 Miles
    • Drivetrain: 5 Years/60,000 Miles 3.0L & 6.0L Duramax® Turbo-Diesel Engines, And Certain Commercial, Government, And Qualified Fleet Vehicles: 5 Years/100,000 Miles
    • Warranty: <<< Preliminary 2026 Warranty >>>
    • Basic: 3 Years/36,000 Miles
    • Maintenance: First Visit: 12 Months/12,000 Miles
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