The 2006 Chevrolet TrailBlazer is available as a 4-door, 5-seat sport utility. Starting at $24,430, the 2006 Chevrolet TrailBlazer LS 4x2 is powered by a 4.2L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway. The top of the line 2006ChevroletTrailBlazerw/LT AWD , priced at $ 28,965 , is powered by a 6.0L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 17-mpg on the highway.