From job-ready Work Truck models to the unique combination of performance and luxury that is the Sierra Denali, the 2011 GMC Sierra lineup is one of the broadest in the industry.

For 2011, changes to the Sierra lineup are include a new Gray Green Metallic exterior color, OnStar 9.0 and enhancements that reduce wind noise.

Sierra All-Terrain returns for 2011. This unique model is based on the popular Z71 Off Road package and offers a distinctive, eye-catching combination of style and refinement. It is outfitted with special shocks, unique four-bar grille, exclusive leather-appointed interior, 18-inch chrome wheels and more.

The Sierra Denali also returns. It's a truck that fuses performance and unmatched luxury, with features that elevate its performance and design, including a 6.2L all-aluminum V-8 engine with E85 FlexFuel capability, variable valve timing and a six-speed automatic transmission.

Engine availability includes: 4.3L V-6 rated at 195 hp and 260 lb.-ft. of torque; 4.8L V-8 with iron block rated at 302 hp and 305 lb.-ft. of torque; 5.3L FlexFuel V-8 E85-capable with iron block and Active Fuel Management, rated at 315 hp and 335 lb.-ft. of torque; 5.3L FlexFuel V-8 E85-capable with aluminum block and Active Fuel Management, rated at 315 hp and 338 lb.-ft. of torque; 6.2L V-8 E85 FlexFuel-capable with aluminum block and variable valve timing, rated at 403 hp and 417 lb.-ft. of torque.

The engines are backed by proven Hydra-Matic electronically controlled automatic transmissions, including the 4L60 four-speed automatic and the fuel-saving 6L80 six-speed.