GMC

The Sierra Hybrid is a powerful, full-size pickup that achieves 40-percent greater city fuel economy and a 25-percent improvement in overall fuel economy than non-hybrid models, while delivering the capability expected of a full-size truck - including a 6,100-pound towing capacity.

Partnering General Motors' patented two-mode hybrid system and a powerful 6.0-liter gas V8, the Sierra Hybrid delivers highly efficient performance, including all-electric driving up to 30 mph. That saves fuel even when the truck is fully loaded or towing a trailer.