2002 Chevy TrailBlazer Base Walkaround & Interior

At the rear, there's a convenient and practical step in the center of the rear bumper, sort of a big notch. But styling-wise, the twin round taillights stacked over the backup light at each corner are kind of lumpy and googly-eyed.

Overall, it looks sturdy and neat, with confident lines that express utility. The pillars and window lines are graceful, while the headlamps (split by the grille crossmember), taillights and turn signals are stylish. Big fender flares are used to visually express the vehicle's boldness, and may be either monotone or silver.

The most dramatic thing about the TrailBlazer may be what's not there: neither a V6 nor V8 engine. The new engine is called the Vortec 4200, an all-aluminum, double-overhead-cam, 24-valve inline six with variable valve timing.

Years ago Chevy trucks used an old reliable straight six, and Jeep has long used a more basic straight six in the Cherokee, while BMW and Lexus continue to use sophisticated versions in high-performance sedans. An inline engine is inherently smoother, simpler, more durable and more fuel efficient than a vee, although in times past, its superior physics had a hard time breaking out of its cast-iron shell. Advancements in electronics, metallurgy and manufacturing methods now enable an inline engine to soar, and for 2002 GM has fully exploited this technical opportunity.

The Vortec 4200 is no ordinary straight six. From 4.2 liters, it produces a stunning 270 horsepower, 30 more than Ford Explorer's new 4.6-liter sohc V8. And it has a very broad torque curve peaking at 275 pounds-feet, only 5 less than the Ford and coming 400 rpm sooner. It features electronic throttle control, an electrical system using silicon circuit boards (replacing some 1100 feet of copper wire), coil-on-plug ignition (thus no plug wires), and a seven-quart oil pan with a clever tunnel for the front drive axle, which allows the longish block to be mounted six inches lower, contributing to better balance and a lower center of gravity.

Attention to detail in other places is evident, from a battery box that draws in cooling air, to remarkably sanitary wiring under the hood, to rear-seat headrests that conveniently flip down for better rearward driver visibility. Because the engine is so quiet and smooth at idle, a feature called "intellistart" was added which prevents the starter from grinding if the key is turned when the engine is already running. With a mixture of amusement and pride, GM engineers report that this happened to them all the time during development.

The Autotrac system, standard on 4WD models, features four settings: 2WD, Auto4WD, 4HI and 4LO. In Auto, which shifts power to all four wheels as conditions require, the TrailBlazer can be towed without having to disconnect the driveshaft-a very convenient new feature. Switching in and out of 4WD can be done on the fly with a flip of the switch, although the vehicle must be in neutral to engage or disengage 4LO.

The chassis and suspension are also highly developed, featuring a list of sports car stuff: rack-and-pinion steering, beefy four-wheel vented discs with twin-piston calipers in front, independent front suspension with short/long control arms, solid rear axle using five-link suspension with Bilstein gas-charged shock absorbers and coil springs, thick antiroll bars front and rear. It was the first truck for the TrailBlazer's chief designer, Ted Robertson, who brought a resume to the assignment that includes the '90s Camaro/Firebird. GM wanted his soul as well as his experience in their midsize SUVs, and they got it. His approach was to put some "sport" in Sport Utility.

The TrailBlazer is 8.3 inches longer and 6.9 inches wider than the current Blazer. The track (the distance between the left and right tires) is the widest in class, 2.2 inches wider than the 2002 Explorer (also redesigned) in front and 0.9 inches wider in rear, with a very tight turning circle of 36.4 feet, achieved by the wheels being able to turn more thanks to the suspension design and engine location.

Finally, the chassis rails are shaped by hydroforming, a process pioneered in the '97 C5 Corvette that makes the rails stronger and lighter. No less than eight crossmembers contribute to a claimed 260 percent increase in torsional rigidity, and there are 12 tuned body mounts made of urethane.

Interior Features
All TrailBlazers seat five passengers, compared to the Explorer's optional seven seats on a nearly identical wheelbase, with its third row of seats squeezed in (the five-seat Explorer has 10 percent more cargo space, thanks to a lower cargo floor enabled by its independent rear suspension). A seven-seat TrailBlazer with longer wheelbase is in the works. GM says their buyers told them that seven passengers on a five-seat wheelbase didn't appeal to them. So GM will build a separate chassis.

For leg room, the TrailBlazer offers 44.6 inches in front (0.7 more than Explorer) and 37.1 inches in the rear (0.1 inch less). Working with a vehicle width that exceeds the Explorer by 2.5 inches, the TrailBlazer's rear seats offer slightly less shoulder room but 3.8 inches more total hip room.

The seats come standard in fabric (LS), cloth (LT), and rich-feeling leather (LTZ); adjustment is manual in LS and gains in trickery all the way up to eight-way power operation with memory (including outside mirror adjustment) and optional heating on the LTZ. The front buckets are designed to accommodate heights ranging from 4'10" to 6'2", but there is a noticeable lack of side bolstering. The front seats don't do justice to the ride, allowing the occupants to feel a side-to-side jouncing that doesn't exist in the 2002 GMC Envoy with the same chassis and suspension but better seats.

Interior lights abound, including reading lights. GM calls the interior lighting "world class," developed by the Rensselaer Polytechnic Institute Lighting Research Center in Indiana.

The instrumentation is complete and clean. A big tachometer is on the left, speedometer in center, and on the right are smaller gauges for water, battery, gas and oil. Brushed nickel is the basic trim, while wood comes with the leather interior. The four-spoke leather-wrapped steering wheel (standard on LTZ, optional on LT) has eight buttons, for climate, sound, cruise control and driver information center in eight languages.

The console includes an open storage bin, an enclosed compartment and two cupholders forward of the gear lever (plus two more for the rear passengers). There are pockets in the front doors and behind the front seats, though none in the rear doors. Standard behind the rear seat is a small hidden compartment under the floor, while optional features include a cargo net, scrolling tonneau cover and power outlet.

The overhead console includes a standard sunglasses holder, plus Travelnote digital recorder (optional with LS, standard with LT and LTZ), which might be considered an important safety feature, as it allows the driver to orally take phone numbers while on a cellphone, thus keeping at least one hand on the wheel. Heating and air conditioning can be controlled separately by the driver, front and rear passengers (which might be considered a safety feature because it too allows the driver to keep both hands on the wheel, instead of having to use one to fight with his passengers).

Depending on the trim level, the sound systems include radio/CD, radio/CD/cassette, six-disc in-dash CD, or six-speaker 275-watt Bose system. Our test model was equipped with the Bose, offering outstanding sound quality and adjustment versatility. All the systems include RDS (Radio Data Systems) technology, allowing the listener to search for stations by type, display information including song and artist information, and provide traffic and weather updates. Rear seat controls and headphone jacks are standard with LTZ, optional with LT and unavailable with LS.

The OnStar communications system is standard with LT and LTZ, optional with LS. It includes GPS navigation, hands-free cellphone communication including free first year safety and security service-automatic crash and theft reporting, as well as remote unlocking if you lock yourself out. Mind-boggling possibilities include everything from having your email read to you by a computerized voice ("Virtual Advisor") to getting directions to the nearest ATM.

Also available is a rear seat DVD entertainment system, with a seven-inch flip-down screen and wireless headphones.