The Chevrolet TrailBlazer Ext 2WD is a full-size SUV that was produced by General Motors from 2002 to 2009. This vehicle was available in both two-wheel and four-wheel drive configurations and was equipped with a variety of engines, including the 4.2-liter inline-six, 4.2-liter Vortec V6, 4.3-liter Vortec V6, and the 5.3-liter Vortec V8. The TrailBlazer was part of GM's GMT360 platform and was eventually replaced by the Chevy Traverse in 2009.