Chevrolet unveiled its flagship Silverado model, the HD ZR2, based on the 2500 HD series, but with additional goodies that made the rugged truck ready to tackle serious offroad situations.

Along with the second generation of its pickup-trucks, Chevrolet introduced an Extended Cab version for its Heavy-Duty Silverado range.

Chevrolet introduced the second generation of the Silverado 2500HD series in 2008 with a choice of three cabins, and the most prominent version was the Crew Cab.

GM introduced the third generation of the Chevrolet Silverado HD2500 in 2006 as a 2007 model-year, and it was an instant success for the American brand.