The base engine for all TrailBlazers is the Vortec 4200, a 4.2-liter inline-6 with dual overhead camshafts, four valves per cylinder, and variable phasing of the exhaust cam rated at 275 horsepower and 275 pounds-feet of torque.
EXT buyers may opt for the Vortec 5300 5.3-liter overhead-valve V8 ($1500), rated 300 horsepower and 330 pound-feet of torque.
Safety features include dual-stage driver and passenger airbags, which inflate with less intensity in slower crashes. Side-impact head-curtain airbags are optional ($495).
LS ($27,720) models are nicely equipped with dual-zone air conditioning, CD player, reclining bucket seats and floor console, power windows and programmable door locks, tilt steering, four-wheel disc brakes with ABS, 16-inch aluminum wheels, luggage rack roof rails, and three power outlets. An optional package ($1,185) adds remote keyless entry, content-theft alarm, heated foldaway mirrors, a rear window defogger, color-keyed carpeted floor mats, crossbars for the luggage rack, and Charcoal-colored body-side moldings.
LT ($30,370) adds fog lamps, an overhead console with HomeLink transmitter and Travelnote digital recorder, body-color grille and door handles, eight-way power for the driver's seat, a trailer wiring harness and 17-inch aluminum wheels. Two-tone leather seating surfaces, a leather-wrapped steering wheel, dual front eight-way power reclining bucket seats with adjustable lumbar support is available as a package ($1,180).
Trailblazer EXT LS ($29,840) and Trailblazer EXT LT ($32,020) are equipped similarly to their standard-wheelbase counterparts, but add third-row seating plus separate rear-seat heating and air conditioning controls. EXT LS models come standard with a HomeLink transmitter, fog lamps, 17-inch wheels, and other upgrades.
Four-wheel drive ($2,250) is optional on all models. So is cruise control ($275), a tilt-and-slide sunroof ($950), and OnStar ($695), although OnStar and cruise control are available as a special package for just $70. Adjustable pedals ($150) and navigation ($1,600-$1,995) are offered on the LT only. XM Satellite Radio ($325) is optional on all models, and an MP3 player is offered on LS ($135). DVD entertainment ($1,295) is available on all models. Various axle ratios (3.42, 3.73, and 4.10:1) and a locking differential are also avialable.
