2026 GMC Sierra 2500HD AT4 in White with Jet Black and Kalahari Accents leather interior represents serious truck capability paired with refined comfort. Powered by the legendary Duramax 6.6L V8 Turbodiesel engine with a 10-speed automatic transmission and 4WD, this crew cab delivers the towing muscle and off-road prowess the AT4 nameplate demands. At just over 20,600 miles, this is a carefully maintained example ready for work or weekend adventure.
- Duramax 6.6L V8 Turbodiesel engine with 220-amp alternator and engine block heater
- 4WD with 2-speed active transfer case and X31 off-road package
- Heated and ventilated front seats with 10-way power adjustment and memory function
- Bose premium 7-speaker sound system with SiriusXM and wireless CarPlay/Android Auto
- Spray-on bedliner with GMC logo, LED cargo lighting, and rear step bumper
- HD surround vision with trailer cameras, side blind zone alert, and ultrasonic park assist
- Lane departure warning, automatic emergency braking, and forward pedestrian braking
- Remote vehicle starter, push-button start, and wireless phone charging
- 20-inch high-gloss black aluminum wheels and deep-tinted glass
- Hill descent control, exhaust brake, and electronic stability control
The AT4 package delivers premium off-road engineering without sacrificing everyday utility and luxury. Every modern convenience is hereâ"from the in-vehicle trailering system app to the heated steering wheel and split-folding rear seatâ"making this Sierra equally at home on the job site or cruising town. The combination of proven diesel power, genuine four-wheel-drive capability, and thoughtful creature comforts makes this 2500HD a smart choice for buyers who refuse to compromise.
Visit us to experience this impressive Sierra firsthand and discover why the AT4 remains the industry standard for premium capability trucks.
