2026 GMC Sierra 2500HD AT4

The 2026 GMC Sierra 2500HD AT4 in white delivers the capability and premium comfort you need for serious work or weekend adventures.

- Duramax 6.6L V8 Turbodiesel engine with 470 hp and 975 lb-ft of torque - 10-Speed Automatic transmission with 2-Speed Active Transfer Case - 4WD with X31 Off-Road Package and Hill Descent Control - AT4 Premium Plus Package with power sunroof and Technology Package - Power-retractable black assist steps with LED lighting - Bed View Camera with two trailer camera provisions and trailer side blind zone alert - HD Surround Vision and ultrasonic front and rear park assist - Bose Premium 7-Speaker Sound System with SiriusXM 360L subscription - Heated and ventilated front seats with 10-way power adjustment and lumbar support - Wireless phone projection and Apple CarPlay/Android Auto compatibility - Heated steering wheel and power sunroof - Spray-on pickup bedliner with GMC Logo - 220-Amp alternator and engine block heater for reliability - 20 High Gloss Black aluminum wheels - Premium leather-appointed front seat trim This vehicle arrives as a certified pre-owned truck, backed by our thorough inspection process to ensure it meets exacting standards.

Every component has been carefully evaluated, and it now carries the confidence that comes with knowing you're investing in a well-maintained, quality machine.

With the Duramax diesel engine, this Sierra 2500HD provides the torque and power you expect from a heavy-duty truck.

The advanced suspension and off-road features give you real capability on challenging terrain, while the refined interior keeps you comfortable during long drives.

The integrated technology system, including trailer guidance and multiple camera views, transforms difficult towing and maneuvering into controlled, straightforward tasks.

The AT4 designation represents genuine off-road engineering, from the specialized suspension tuning to the high-clearance step design.

Combined with the X31 Off-Road Package, this truck handles demanding conditions with confidence.

The exhaust brake, hill descent control, and transfer case provide the tools you need for controlled descents and challenging terrain.

Inside, the premium appointments speak to GMC's commitment to comfort and convenience.

Heated and ventilated seating, dual-zone climate control, and the Bose audio system create an environment where long hours behind the wheel remain enjoyable.

Wireless charging, multiple USB ports throughout the cabin, and the head-up display keep your essential information and device