Chevrolet builds truck-based sport-utility vehicles in three sizes -- mid-size, full-size and super-size, with TrailBlazer, Tahoe and Suburban. Also, Chevy wagons extend to three different car-based models with the compact-class Equinox, a big crossover sport van named Uplander and the HHR, a panel wagon with retro styling.

Chevy's super-size SUV stretches for 18 feet and spreads more than six feet across the beam. Its vast cabin has seats for as many as nine. The series includes 1500 (half-ton) and heavy-duty 2500 (three-quarter-ton) versions with big engines up to a 6.0-liter V8 making 352 hp. Like Tahoe, Suburban earns a new platform and upgraded cabin designs for '07. Both 1500 and 2500 versions host 2WD and 4WD editions, but the latter has a dash-mounted switch to jockey between all-wheel-drive traction, rear-wheel or four-wheel high and low settings.

Chevrolet's full-size SUV for 2007 comes in three trims -- entry-level LS, well-equipped LT and top-tier LTZ -- with rear-wheel two-wheel-drive (2WD) or four-wheel-drive (4WD) traction. There's a new platform for Tahoe with a wider track and lower center of gravity to make the wagon more stable in motion and, when coupled to a revamped suspension, improve the ride. Two powerful V8 engines motivate the new Tahoe. Top plant is a 5.3-liter V8 with Active Fuel Management (AFM) technology to pare cylinder load and conserve on fuel. It achieves 320 hp with fuel-burn scores to 20.5 mpg. [Read RTM's Full Review]

The mid-size SUV from Chevrolet comes in regular-length and stretched editions. The longer TrailBlazer EXT has extra cabin space for a third tier of seats to boost the passenger capacity to seven. A standard-length TrailBlazer contains seats for five. Both TrailBlazer and EXT use a 4.2-liter in-line-six engine rated now at 291 hp. Also available is a Vortec 5.3-liter V8 pumping 302 hp with AFM to save fuel. But the sport-tuned TrailBlazer SS gets a modified version of Corvette's LS2 6.0-liter V8 engine to push 395 hp through a 2WD or 4WD system.

Chevy's car-based wagon measures larger than other SUVs in the compact class. The wide and long platform sets up a spacious passenger compartment. The cabin has bucket seats followed by a three-place bench that slides fore and aft by eight inches to vary legroom. The bench's seatback, split 60/40 percent, reclines to two positions and each side folds to make way for cargo. Equinox draws from a 3.4-liter V6 producing 185 hp. Two trims -- LS and LT -- offer front-wheel-drive (FWD) or AWD traction. New standard gear for 2007 includes StabiliTrak skid controls and curtain-style air bags.

More power and more standard equipment for safety apply to Chevy's boxy people-mover. Uplander is called a crossover sport van, or CSV, and offered for 2007 with a regular-length or extended-length body and trims of 1LS, 1LT, 2LT and 3LT. The passenger compartment, arranged with three rows of seats for up to seven riders, has the flat floor of a minivan extending from forward bulkhead to aft cargo compartment. Power comes from a new 3.9-liter V6 with variable valve timing (VVT) to generate 240 hp. GM's StabiliTrak skid control system is standard for 2007 on all extended-length Uplanders.

Chevy's newest wagon looks like a shrunk-down and retro-styled homage to a 1949 Suburban of the roly-poly fender and bulging roofline vintage. The HHR (which stands for Heritage High Roof) rides on the platform of Chevy's agile Cobalt and brings a spacious cabin with two rows of seats and a big cargo bay. Two trims -- LS and LT -- use different four-cylinder Ecotec engines. A 2.2-liter base version now delivers 149 hp and the 2.4-liter four for top-level 2LT climbs to 175 hp. Latest 2007 HHR paint shades include Imperial Blue and Golden Teal Metallic.