2026 GMC Sierra 2500HD AT4

From the store

Call us at 512-954-9290

- 6.6L V8 Diesel Turbocharged (Duramax) with 470 hp and 975 lb-ft of torque

- 10-Speed Automatic Transmission with 4WD

- AT4 Premium Plus Package

- Gooseneck/5th Wheel Prep Package

- X31 Off-Road Package with Hill Descent Control and 2-Speed Active Transfer Case

- Technology Package

- HD Surround Vision with Bed View Camera and Trailer Camera Provisions

- Bose Premium 7-Speaker Sound System with SiriusXM 360L

- Wireless Phone Projection and Apple CarPlay/Android Auto

- Heated and Ventilated Leather Front Seats with 10-Way Power Adjusters

- Heated Steering Wheel

- Power Sunroof

- Multicolor 15" Head-Up Display

- Ultrasonic Front and Rear Park Assist with Rear Cross Traffic Alert

- Spray-On Pickup Bedliner with GMC Logo

The 2026 GMC Sierra 2500HD AT4 stands ready to handle whatever demands you place on it. This truck arrives with the legendary Duramax 6.6L V8 turbodiesel engine, delivering 470 horsepower and a commanding 975 lb-ft of torque. The 10-speed automatic transmission paired with intelligent 4WD ensures smooth power delivery across all terrains and conditions. Whether you're managing heavy loads or navigating challenging landscapes, this truck provides the capability and control you need.

Built for serious work and premium comfort, the AT4 trim combines rugged capability with refined interior appointments. The cabin features perforated leather-appointed front seats with heating and ventilation, along with heated rear outboard seats for passenger comfort. Dual-zone automatic temperature control keeps everyone comfortable regardless of weather. The heated steering wheel and power adjustable seats with lumbar support reflect the thoughtful engineering throughout this vehicle.

Technology integration keeps you connected and in command. The premium GMC infotainment system offers wireless phone projection, Apple CarPlay, and Android Auto compatibility. The multicolor 15-inch head-up display projects critical information directly into your line of sight. SiriusXM satellite radio with a 360L trial subscription keeps you entertained, while the Bose premium seven-speaker sound system delivers quality audio. Multiple USB ports, including wireless charging capability, ensure your devices stay powered throughout your day.

The Gooseneck/5th Wheel Prep Package and comprehensive trailer technology make hauling seamless. The in-vehicle trailering system app, bed view camera with trailer camera provisions, and hitch guidance with hitch view provide complete visibility and control. Trailer side blind zone alert and trailer viewing software add essential safety layers when towing.

Off-road readiness is engineered into every aspect of the AT4. The X31 Off-Road Package includes an off-road suspension, 2-speed active transfer case, and hill descent control. The gloss black header grille with matching grille insert bars complements the rugged aesthetic, while 20-inch high-gloss black aluminum wheels provide capable stance. LED cargo area lighting, smoked amber roof marker lamps, and a spray-on pickup bedliner with GMC logo complete the commanding presence.

Safety and convenience features provide confidence on every trip. Ultrasonic front and rear park assist, rear cross traffic alert, and HD surround vision offer comprehensive awareness. Automatic emergency braking, forward collision alert, and front pedestrian braking represent advanced protective technologies. Push button start, remote vehicle starter system, and keyless open and start simplify daily operation.

This Silver 2026 Sierra 2500HD AT4 represents a truck engineered for those who demand capability, comfort, and advanced technology in one comprehensive package. Visit our showroom to experience the commanding presence and refined capability this truck delivers.

Call us at 512-954-9290 Price includes: $2000 - GMC Bonus Cash. Exp. 11/30/2026 $2500 - Buick & GMC