The Sierra Hybrid is GMC’s gasoline-electric hybrid half-ton pickup that returns to the GMC lineup for 2009. The Sierra was redesigned for 2007 and the 2009 Sierra Hybrid is based on the redesigned truck and now features General Motor’s two-mode hybrid system that combines a 6.0-liter V8 Gen IV gasoline engine with Active Fuel Management and late intake valve closing technology with GM’s advanced Electrically Variable Transmission (EVT) and a 300-volt nickel-metal hydride Energy Storage System to achieve 40-percent greater city fuel economy and a 25-percent improvement in overall fuel economy. The new hybrid system allows the Sierra Hybrid to drive at up to 30 mph on electricity alone and also allows the engine to operate in its more economical V4 mode for longer periods. The GMC Sierra Hybrid comes standard with the OnStar advanced communication system.
Click for more details about OnStar.
