The Chevrolet Avalanche is a four-door sport utility truck. It is sold by General Motors' Chevrolet brand in the United States. The Avalanche was first made in 2002 and the second generation was first shown at the Chicago Auto Show in February 2006. It is named after the sudden collapse of mountain snowpacks that are known as Avalanches. There have been two generations of the Chevrolet Avalanche with the second one being made in 2007.