New 2026 GMC Sierra 2500HD AT4 4WD

Call us at 512-954-9290

This 2026 GMC Sierra 2500HD AT4 represents serious capability wrapped in refined truck design. With a Duramax 6.6L V8 Turbodiesel engine delivering 470 horsepower and 975 lb-ft of torque, combined with a 10-speed automatic transmission and 4WD, this truck handles demanding work and challenging terrain with authority. The B20-Diesel compatible engine includes an engine block heater for reliable cold-weather starts.

- Duramax 6.6L V8 Turbodiesel with 470 hp and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- 2-Speed Active Transfer Case with Off-Road Suspension
- X31 Off-Road Package
- HD Surround Vision with Bed View Camera and Trailer Cameras
- Multicolor 15" Diagonal Head-Up Display
- Wireless Phone Projection and Apple CarPlay/Android Auto
- Bose Premium 7-Speaker Sound System with SiriusXM 360L Trial
- Heated and Ventilated Front Seats with Heated 2nd Row Outboard Seats
- Perforated Leather-Appointed Front Seat Trim
- Spray-on Pickup Bedliner with GMC Logo
- LED Cargo Area Lighting
- Remote Vehicle Starter System with Push Button Start
- Ultrasonic Front and Rear Park Assist
- Wireless Charging Pad

The AT4 Preferred and Premium Plus Packages elevate your daily driving experience with premium appointments and advanced convenience features. The cabin showcases perforated leather seating, heated and ventilated front seats, and heated rear outboard seats for year-round comfort. A heated steering wheel adds another layer of refinement during cold mornings, while the power sunroof brings natural light and open-air enjoyment to your rides.

Technology integrates seamlessly throughout this truck. The premium GMC Infotainment System connects with wireless phone projection, giving you access to your phone's capabilities without taking your hands off the wheel. The multicolor head-up display keeps essential information visible without distracting you from the road. Multiple USB charge ports, including two charge/data USB ports in the center console, keep your devices powered throughout the day.

Practical features demonstrate GMC's commitment to both work and lifestyle. The spray-on bedliner with GMC logo protects your cargo investment, while LED cargo area lighting ensures visibility in any condition. A 120-volt bed-mounted power outlet and additional 120-volt instrument panel outlet give you charging capability where you need it. The power sliding rear window with defogger adds ventilation and practicality.

Safety technology works behind the scenes to protect you and your passengers. Forward collision alert, automatic emergency braking, and front pedestrian braking provide active protection. Rear cross traffic alert and trailer side blind zone alert watch the areas you cannot see. The ultrasonic front and rear park assist system makes maneuvering easier, while hill descent control provides confidence on steep grades.

This AT4 arrives finished in Beige exterior with 20-inch high-gloss black aluminum wheels that balance strength with style. The gloss black header grille and grille insert bars signal the purposeful design DNA of the Sierra line. LED smoked amber roof marker lamps and deep-tinted glass complement the commanding presence of this truck.

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