The Chevy Avalanche comes in one configuration, a half-ton, full-size pickup with four doors, room for up to six passengers and outfitted with a unique, fold-down rear bulkhead accessing an enclosed bed. Three engines are offered, two 5.3-liter V8s, making 320 horsepower in the two-wheel drive version and 310 horsepower in the four-wheel drive model, and a 366-hp, 6.0-liter V8. The transmission is a four-speed automatic, mated to an electronic transfer case in four-wheel-drive models. Safety features that come standard on all models include front seat and side curtain airbags, LATCH rear-seat child safety seat anchors, and the OnStar crash-notification system. The Chevrolet Avalanche 1500 is a carryover from 2007.