On-demand four-wheel drive with automatic locking hubs and a locking center differential beef up driving performance in the 2008 Chevrolet Trailblazer LT3 4WD, and the larger 18-inch alloy wheels with all-season tires keep the mid-size SUV firmly on the road.  Powered by either a 4.2-liter, 285-hp I6 with 276 lb-ft of torque or a 5.3-liter, 300-hp V8, both mated to a 4-speed HydraMatic, the 2008 Trailblazer LT3 4WD features 4-wheel disc and ABS brakes, dual front-side and side curtain airbags for both rows, front and rear stabilizer bars, stability control, rollover protection, automatic headlights, foglights, and an auto-dimming rearview mirror.  It earns four and five stars in crash tests, except for driver impact, which gets three stars.

8-way power front seats with driver's memory are upgrades on the LT3.  These join the full power features, cruise control, heated mirrors, wheel-mounted audio controls for the CD player, a trip computer, keyless entry, remote garage opener, intermittent front and rear wipers, compass and temperature display, and new XM satellite radio.  On the outside, a roof rack, trailer hitch, and running boards are standard.  The rear seats split-fold 60/40, opening up the 41 cubic foot cargo area to 80 cubic feet.  Towing capacity maxes at 6600 pounds with the 2008 Trailblazer LT3 4WD.  An off-road package adds skid plates and underbody protection.  Other options include a cargo net and cover, a sunroof, and navigation system.