2026 GMC Sierra 2500 HD AT4



In Stock
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  • $91,230 FINAL PRICE

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Vehicle Information

VIN: 1GT4UPEY9TF261836
Stock #: 260496
Model Code: TK20743
  • Condition New
  • Body Style Crew Cab
  • Exterior Color Summit White
  • 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
Experience rugged capability and refined comfort with this 2026 GMC Sierra 2500 AT4 4WD, located in Stephenville, TX. Built around a potent V8 6.6L diesel engine, this heavy-duty truck delivers exceptional towing power, confident highway passing, and long-haul efficiency for work or weekend adventures. The AT4 trim adds off-road-ready suspension and skid protection while providing a premium interior that keeps every journey comfortable. Inside, enjoy leather seats that combine durability with upscale style, along with modern connectivity features such as Android Auto and Hands-Free Bluetooth® for seamless smartphone integration and safe calling on the go. XM Radio brings commercial-free entertainment across long drives, and advanced safety assists like Lane Departure Warning actively help you stay centered and focused on the road. This GMC Sierra 2500 balances utility and tech: durable bed features and towing equipment tackle demanding jobs, while in-cabin comforts and driver aids make daily driving easier and more enjoyable. The diesel V8 enhances torque output for heavy towing and low-RPM performance, and 4WD capability ensures traction in changing Texas conditions. Located in Stephenville, TX, this GMC Sierra 2500 AT4 is ready to be driven home and put to work or play. Schedule a test drive today to feel the power of the 6.6L diesel and experience the blend of capability, comfort, and modern tech that defines this exceptional heavy-duty pickup.

Equipment
Apple CarPlay: Seamless smartphone integration for this unit - stay connected and entertained on the go! This vehicle has auto-adjust speed for safe following. This GMC Sierra features a high end BOSE stereo system. This GMC Sierra features a hands-free Bluetooth® phone system. An off-road package is installed on the vehicle so you are ready for your four-wheeling best. This vehicle features steering wheel audio controls. This GMC Sierra is equipped with the latest generation of XM/Sirius Radio. Never get into a cold vehicle again with the remote start feature on this 3/4 ton pickup. The leather seats in this 2026 GMC Sierra 2500 are a must for buyers looking for comfort, durability, and style. This GMC Sierra's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. This unit offers Android Auto for seamless smartphone integration. This 3/4 ton pickup's Cross-Traffic Alert: Safeguarding you from unexpected traffic when reversing.

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 L

All Features

AT4 Premium Plus Package

    LPO, Black Badging Package

      Gooseneck / 5th Wheel Prep Package -- Hitch platform to accept Gooseneck or 5th Wheel hitch.

        LPO, Hitch 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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