The Chevrolet Avalanche is a full-sized crew-cab pickup with a unified bed and cab. An innovative mid-gate panel between the bed and passenger compartment can be folded down to make room for longer cargo. This feature allows the Avalanche to accommodate a variety of different passenger and cargo loads. Fussing with all those pieces, however, can be a chore. Based on the Suburban, the Avalanche uses that model's 5.3-liter V8, which provides impressive acceleration, though it isn't economical. The ride is commendably comfortable and quiet for a truck.