The Avalanche is powered by a FlexFuel Vortec 5.3L V8 engine, meaning you choose whether to run on unleaded or E85—a blend of 85% ethanol and 15% gasoline—or a combination of both. (1) The GM-exclusive Midgate turns Avalanche from an SUV into a full-size pickup with an 8' 2" cargo box in less than a minute; a removable, three-piece cargo cover and lockable, top-box storage enhance Avalanche's flexibility.

1. Go to livegreengoyellow.com to see if there is an E85 fuel station near you.