2026 GMC Sierra 2500HD AT4 Truck Duramax V8 Turbodiesel

Meet the 2026 GMC Sierra 2500HD AT4, a robust diesel truck engineered to handle demanding work and provide genuine capability for those who need a versatile workhorse.

- Duramax 6.6L V8 Turbodiesel engine with 470 horsepower and 975 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- AT4 Premium Plus Package with power sunroof
- Technology Package with multicolor 15" Head-Up Display
- Universal Home Remote
- Bed View Camera with Trailer Camera Provisions
- HD Surround Vision with Hitch Guidance
- Power-Retractable Black Assist Steps with LED lighting
- All-Weather Floor Liners for 1st and 2nd Rows
- Spray-on Pickup Bedliner with GMC Logo
- Bose Premium 7-Speaker Sound System with SiriusXM 360L
- Heated and Ventilated Front Seats with 10-Way Power Adjustment
- Auto-Dimming Rear-View Mirror with Rear Camera
- Wireless Charging and Apple CarPlay/Android Auto
- 5th Wheel and Gooseneck Trailer Wiring Provisions

This Sierra 2500HD AT4 arrives finished in black and equipped for serious capability. The Duramax diesel engine delivers substantial power paired with the efficiency this class demands. The 10-speed automatic transmission and 4WD system provide smooth operation across varied terrain and towing scenarios. With only 7,908 miles, this truck remains practically new.

The AT4 Premium Plus Package elevates the ownership experience with genuine refinement features. The power sunroof, advanced technology displays, and integrated camera systems enhance both daily driving and specialized work tasks. The multicolor Head-Up Display keeps essential information visible without requiring your attention to leave the road. Hitch Guidance with integrated camera views simplifies trailer operations, a practical benefit for those who regularly tow.

Inside, the cabin reflects attention to detail. Perforated leather-appointed seats come heated and ventilated with 10-way power adjustment for driver comfort. The Bose premium audio system with SiriusXM 360L trial subscription offers quality entertainment on every drive. Wireless charging, multiple USB ports, and smartphone integration keep devices ready for use. The automatic temperature control with front dual-zone capability allows passenger preferences without compromise.

Utility features define this truck's character. The spray-on bedliner with GMC logo protects against daily wear. Power-retractable assist steps with integrated LED lighting enhance accessibility. All-weather floor liners preserve the interior through demanding use. The 220-amp alternator and engine block heater ensure reliable performance in varied conditions. Off-road suspension and hill descent control stand ready for challenging terrain. Trailering provisions including 5th wheel and gooseneck wiring harness accommodations address serious towing requirements.

Safety and convenience systems work together to support your priorities. Automatic emergency braking, lane departure warning, and forward pedestrian braking provide active protection. Rear cross traffic alert, ultrasonic park assist, and multiple camera views enhance situational awareness. OnStar services, keyless open and start, and the emergency communication system deliver peace of mind during every journey.

This 2026 Sierra 2500HD AT4 represents the practical choice for owners who value genuine capability without compromise. With substantial power, advanced technology, refined comfort, and dedicated truck features, it stands ready for work and weekend ventures alike.

Please ask for SALES by calling 985-386-7790 if you have any questions or would like to schedule a test drive. Gateway Ford proudly service the following communities, Ponchatoula, Hammond, Baton Rouge, Prairieville, Denham Springs, Walker, Albany Mandeville, Covington, Slidell, LaPlace, New Orleans, Metairie.