Base level trim is the SL; the SLS adds a color-keyed grille (rather than gray) and interior upgrades. Then, for $701, any SLS can become an SLE with a chrome grille and alloy wheels. Air conditioning, standard in the Crew Cab, is an $805 stand-alone option on all other models. Air is also included in each of five different Super Spec equipment packages that help tailor a Sonoma to the buyer's needs.

Base retail prices range from $12,763 for an SL with four cylinders and 2WD; up to $25,784 for a V6-powered SLE Crew Cab. Our 4WD V6 Extended Cab in SLS trim retailed for $20,382.

A 120-horsepower 2.2-liter engine is standard on 2WD models. An alternative fuel version of this four-cylinder engine is available that burns gasoline, Ethanol-85, or any mixture in between. The Vortec 4300 4.3-liter V6 is standard on 4WD Sonomas, where it is rated 190 horsepower. The same V6 is optional on two-wheel-drive models but rates only 180 horsepower in that variation.

Five-speed manual and four-speed automatic transmissions are available.

Buyers of basic 2WD Sonomas have a choice of three suspensions: Smooth Ride, Heavy-Duty and Sport. The Sport package enhances handling and goes a long way toward making the Sonoma drive like a car. This is accomplished with shorter ride-height springs, high-performance deCarbon gas shock absorbers, urethane jounce bumpers, front and rear stabilizer bars, specially tuned variable-ratio power steering and wide 8-inch aluminum wheels with Goodyear P235/55R-16 tires.

Extended-cab and four-wheel-drive models automatically get the firmer Heavy Duty suspension, designed for high payloads and towing. Off-road enthusiasts may opt for the $695 ZM6 Off-Road package, with Bilstein gas shock absorbers, plus upgraded springs, jounce bumpers, stabilizer bars, and on/off-road P235/75R15 white outline tires; or the even more aggressive ZR2 Highrider, which includes a shield package plus wheel flares and special springs, shocks, wheels and tires for a higher and wider stance.