2015 GMC Sierra Denali 3500 HD crew cab pickup with dual rear wheels
The 2015 Sierra 3500 features an all-new exterior designed to reduce wind noise and enhance powertrain cooling for more consistent performance. The all-new interior is quiet and comfortable, with ample storage for work or travel and the intuitive connectivity of IntelliLink. Customers can chose from gasoline, CNG or diesel power, including the legendary Duramax turbodiesel and Allison transmission. The Sierra 3500 offers class-leading available payload and conventional towing.