For years, Chevy has offered an off-road edition of their popular truck lines best known as the Z71 package. This package offers off-road specific styling and mechanical upgrades over the base model. Now, Chevy is going one step further and offering the Chevrolet Colorado Trail Boss. This “Z71-plus” truck combines great styling upgrades with Chevy’s legendary off-road equipment. It isn’t just a styling Z71, it is a Trail Boss.