The new Duramax diesel V8 has an immodest 6.6-liter displacement and produces 451 hp and a whopping 1234 Nm of torque. Also available for the model is a six-liter gasoline V8 with 365 hp and 515 Nm of torque.
To improve off-road capabilities, the pickup received a reinforced suspension and additional underbody protection. Externally, the limited All Terrain X series can be recognized by 18-inch wheels shod with off-road tires, as well as black-painted mirrors, moldings, and other exterior details. The body itself can only be painted in black or white.
