The 2008 Chevrolet TrailBlazer is available as a 4-door, 5-seat sport utility. Starting at $27,745, the 2008 Chevrolet TrailBlazer 1LT 4x2 is powered by a 4.2L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway. The top of the line 2008ChevroletTrailBlazerFleet w/2FL 4x4 , priced at $ 29,535 , is powered by a 4.2L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 20-mpg on the highway.