Vortec 4.2L I6 SPI, 4WD, 8-Way Power Driver Seat, Clean Carfax, Electric Tilt-Sliding Power Sunroof, Front dual zone A-C, and Overhead Custom Console. This 2006 TrailBlazer is for Chevrolet fans looking the world over for that perfect SUV. New Car Test Drive said it had ...a stunning new engine, stiffer and lighter chassis, sophisticated suspension, powerful brakes and impressive details... The precision-tuned Vortec 4.2L I6 SPI engine provides the very essence of performance, delivering substantial horsepower and torque. Dont Forget to check out the numerous benefits we offer in our Montrose Advantage And Montrose 100 Warranty!