2026 GMC Sierra 2500 HD AT4



In Stock
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  • $77,755 FINAL PRICE

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Vehicle Information

VIN: 1GT4UPE79TF321203
Stock #: 260860
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 V8 Gas engine
  • Transmission Automatic
  • Fuel Type Gasoline Fuel

Highlighted Features

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

Dealer Comments

Vehicle Details
Take on tough jobs and weekend adventures with confidence in this 2026 GMC Sierra 2500 AT4, now available in Stephenville TX. Built for drivers who demand serious capability, this heavy-duty pickup pairs a powerful V8 6.6L gasoline engine with 4WD to deliver the strength, traction, and control needed for demanding work and rugged terrain. The AT4 trim adds bold styling, off-road capability, and premium comfort, making it a standout choice for buyers seeking a versatile truck that works hard and looks great doing it. Inside, the GMC Sierra 2500 AT4 offers a well-appointed cabin designed to keep you comfortable and connected. Enjoy the clarity of the BOSE Stereo, seamless communication through Hands Free Bluetooth®, and entertainment options with XM Radio. Remote Start adds convenience on busy mornings, while the Back-Up Camera helps make parking and maneuvering easier in tight spaces. Every feature is engineered to support productivity, convenience, and confidence behind the wheel. If you're shopping for a powerful heavy-duty truck in Stephenville TX, this 2026 GMC Sierra 2500 AT4 deserves a close look. With impressive capability, advanced technology, and refined comfort, it's ready for job sites, towing, and everyday driving alike. Contact us today to learn more about this exceptional GMC Sierra 2500 AT4.

Equipment
An off-road package is equipped on this GMC Sierra. Engulf yourself with the crystal clear sound of a BOSE sound system in this vehicle. Start this GMC Sierra from inside with remote start. with XM/Sirus Satellite Radio you are no longer restricted by poor quality local radio stations while driving this 3/4 ton pickup. Anywhere on the planet, you will have hundreds of digital stations to choose from. This GMC Sierra is pure luxury with a heated steering wheel. The steering wheel audio controls on this 3/4 ton pickup keep the volume and station within easy reach. This 2026 GMC Sierra 2500 offers Apple CarPlay for seamless connectivity. This 3/4 ton pickup's Lane Departure Warning helps keep you in your lane. The GMC Sierra warns of approaching vehicles with Cross-Traffic Alert. See what's behind you with the back up camera on this vehicle. This GMC Sierra has auto-adjust speed for safe following.

Packages
AT4 Premium Plus Package: Power Sunroof; Off-Road High Clearance Step; Technology Package. 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; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; Bose P

Eligible Benefits

No Monthly Payments for 90 Days for Well-Qualified Buyers When Financed w/ GM Financial

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: Gasoline Fuel
    • Horse Power
      • Horse Power: 401
    • Rear Wheel
      • Rear Wheel: Single
    • Trailering Capacity
      • Trailering Capacity: 16000 lbs

    Warranty

    • Corrosion: 3 Years/36,000 Miles Rust-Through 6 Years/100,000 Miles
    • Roadside Assistance: 5 Years/60,000 Miles 3.0L & 6.6L 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 & 6.6L 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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