Vortec 5.3L V8 SFI and 4WD. Look! Look! Look! Black Knight! Creampuff! This charming 2003 Chevrolet TrailBlazer EXT is not going to disappoint. There you have it, short and sweet! Climb into this outstanding TrailBlazer EXT, knowing that it will always get you where you need to go, on time, every time. New Car Test Drive called it ...among the best of the mid-size SUVs. Smooth, stable, and powerful, it works well around town, on the open highway, and in the back country... Why shop anywhere else!!