The Sierra Denali features the stunning combination of luxury appointments, innovation, performance and capability you've come to expect from GMC. The impressive exterior styling highlights include the distinctive Denali honeycomb grille, sleek bodywork and 18-inch polished aluminum wheels. The Sierra Denali features a specially tuned suspension package and high-output Vortec 6.2L V8 engine with VVT and 403 hp, a heavy-duty six-speed transmission and four-wheel disc antilock brakes. You'll find the luxury and performance you desire with the features you need in the Sierra Denali Crew Cab.