The 2005 Chevrolet Blazer is a 2-door, 4-seat Sport Utility, available in 5 trims, ranging from the LS 4x2 to the 4x4 4dr. Upon introduction, the $21,305 LS 4x2 is equipped with a standard 4.3L, 6-cylinder, engine that achieves 16-mpg in the city and 22-mpg on the highway. a Manual transmission is standard. The $27,480 4x4 4dr is equipped with a standard 4.3L, 6-cylinder, engine that achieves 15-mpg in the city and 19-mpg on the highway. an Automatic transmission is standard.