New 2026 GMC Sierra 2500HD AT4 4WD

Call us at 512-954-9290

The 2026 GMC Sierra 2500HD AT4 combines capability with refined comfort, built on the foundation of the legendary Duramax 6.6L V8 Turbodiesel engine paired with a 10-speed automatic transmission and 4WD. This truck is engineered to handle demanding work while delivering the premium appointments you expect in a full-size heavy-duty pickup.

- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic Transmission and 4WD
- AT4 Premium Plus Package with Power Sunroof
- Technology Package with Wireless Phone Projection and Wireless Charging
- Gooseneck/5th Wheel Prep Package with Hitch Platform
- HD Surround Vision and Bed View Camera with Trailer Camera Provisions
- Spray-on Pickup Bedliner with GMC Logo
- Off-Road Suspension with 2-Speed Active Transfer Case and Hill Descent Control
- Multicolor 15" Diagonal Head-Up Display
- Heated and Ventilated Leather Front Seats with Power Adjusters
- 3 Years of SiriusXM with 3-Year Subscription
- Bose Premium 7-Speaker Premium Audio System
- All-Weather Floor Liners for First and Second Rows
- 220-Amp Alternator and Engine Block Heater
- Upfitter Switch Kit with Five Configurable Circuits

The AT4 designation means this Sierra is equipped with purposeful features designed for those who demand more from their truck. The off-road suspension, 2-speed active transfer case, and hill descent control provide confidence on any terrain. The spray-on bedliner protects your truck bed while the gooseneck/5th wheel prep package supports heavy hauling applications with integrated hitch platform and trailer harness.

Interior refinement matches the truck's capability. Heated and ventilated leather front seats with 10-way power adjustment ensure comfort through long days. The power sunroof brings light and openness to the cabin. Wireless charging and dual USB charge/data ports keep your devices powered and accessible. The 15-inch head-up display projects critical information directly into your line of sight, reducing distraction.

Trailering is simplified with the integrated in-vehicle trailering system, bed view camera with trailer camera provisions, and trailer side blind zone alert. These features work together to give you visibility and control when towing. The hitch guidance system with hitch view further assists during backing operations.

Technology throughout the cabin keeps you connected and informed. The premium GMC infotainment system integrates with your smartphone via wireless projection, while SiriusXM satellite radio with a 3-year subscription keeps you entertained. OnStar services provide emergency communication and vehicle diagnostics. Automatic emergency braking, forward collision alert, and lane departure warning systems provide additional confidence on the road.

The exterior presents the unmistakable AT4 presence with black GMC emblems, black Sierra nameplates, and gloss black header grille. Twenty-inch high gloss black aluminum wheels with the black lug nut and wheel lock kit complete the purposeful appearance. LED cargo area lighting, smoked amber roof marker lamps, and deep-tinted glass enhance both function and style.

This 2026 Sierra 2500HD AT4 is ready to go to work or take you wherever you need to be. With only 5 miles, it's virtually brand new and ready for its first owner to begin building memories and accomplishing goals.

Call us at 512-954-9290 Price includes: $1000 - Buick & GMC Consumer Cash Program. Exp. 09/30/2026 $1000 - GMC Incremental Consumer Cash Program. Exp. 09/30/2026