The new Sierra Hybrid uses GM's new Two-Mode Hybrid system first launched in the 2008 Yukon Hybrid. The Sierra Hybrid is a Crew Cab model with a specially tuned 332-hp 6.0-liter V8 working in conjunction with a battery pack and a four-speed automatic transmission that houses two electric motors. The Hybrid offers fuel economy ratings in the 20-22 mpg range, while compromising payload and tow capacity (maximum around 6000 pounds).
The 2009 GMC Sierra Denali makes for a comfortable, luxurious pickup with the emphasis on performance rather than payload and towing capacity. The Sierra Denali offers the same sort of high-line content as the upscale GMC Yukon Denali sport utility. Sierra Denali comes with all-wheel drive.
The 6.2-liter V8 used in the Denali is also available in regular trim Crew Cab pickups with four-wheel drive for more power and fuel consumption.
Sierra offers many permutations with a choice of cab styles and bed lengths, and nine engine choices (of five sizes). There are limitations however, such as the biggest engine is limited to Crew Cabs, the 6-liter does not go in regular cab or extended cab long bed trucks, and manual transmissions are not offered. Next Page