
The Duramax hood-scoop induction system provides cooler induction air temperatures to maximize horsepower.
New bold Denali chrome grille.
Adjustable accelerator and brake pedals allow the driver to set at the most comfortable position.
Standard on every new GMC - GMC Pro Grade Protection has you truly protected with features and
services including:
- Two maintenance visits
- 3-year / 36,000-mile Bumper-to-Bumper Warranty
- 5-year / 60,000-mile Powertrain Warranty
- 5-year / 60,000-mile Roadside Assistance & Courtesy Transportation
- 3-month trial of OnStar Guidance Plan with a suite of emergency security and diagnostic
services
- 5-year OnStar Basic Plan
Power proves beautiful in the 2018 GMC Sierra 2500 Denali. Massive strength and luxurious appointments come together in confident form. Heated and ventilated leather seats offer comfort with convenience featuring easy fold capability when you need superior storage space. Inside the new Sierra 2500 Denali, the cabin environment becomes pleasantly quiet the moment you close the triple-sealed doors. The steel construction and engine insulation also contribute to muting outside noise making every ride conversation friendly. Controls are ergonomically-placed and GMC's impressive IntelliLink infotainment system is responsive, intuitive, and includes smartphone compatibility and navigation. The power of the 2018 Sierra 2500 Denali lives in the stout 6.6-Liter Duramax Turbocharged Diesel V-8 making 445-horsepower and a mighty 910 lb-ft of torque. Trailering is near effortless with 13,000-pounds hauling capacity and 14,500-pounds 5th-Wheel towing capacity. Serious performance is also achieved from the standard 6.0-Liter V-8 gasoline engine producing a healthy 360-horsepower and 380 lb-ft of torque. Both powerplants are rightfully connected to a sophisticated Allision six-speed automatic transmission. A highly capable work companion, the 2018 GMC Sierra 2500 Denali doubles as an outstanding vacation hero the whole family will enjoy.