The Chevrolet TrailBlazer 4WD is a midsize SUV manufactured by General Motors, and was introduced in 1999 as the successor to the Chevrolet S-10 Blazer. It is offered in both 2WD and 4WD versions, and is equipped with a variety of engine choices. It is available with a gasoline engine, or as a diesel. The TrailBlazer was discontinued in 2009 and replaced by the Chevrolet Traverse, but it still remains popular among car enthusiasts and off-roaders.