2009 GMC Sierra / Chevrolet Silverado Hybrids Preview
GM has been developing a large-SUV hybrid drive system in cooperation with Chrysler and BMW. Teaming up helps spread development costs across three different automakers, and the resulting Two-Mode hybrid system is already available to Tahoe and Yukon buyers. It's an innovative partial electric drivetrain that allows the huge haulers to consume as little fuel as a mid-sized sedan.
