Our test truck was the Sonoma SLS 4X4 extended cab. It came with the $256 Heavy Duty Suspension Package that includes heavy duty springs and shocks. It also came with an optional $1,802 package that included the Wideside body, SLS sport decor, the Vortec 4300 V6 engine, aluminum wheels, air conditioning, tilt steering wheel, cruise control and an AM/FM/cassette stereo with a clock. And it was equipped with dual lighted visor mirrors, cupholders, and full floor carpeting with mats. The Sonoma is an attractive truck with a smooth, aerodynamic hood that wraps around the front end. Its exterior lines are now cleaner with a redesigned body-colored front bumper, fascia and grille and a new headlamp design that integrates all forward lighting functions. Composite headlamps are standard with optional integral fog lamps. The front license plate bracket is now molded into the charcoal- colored lower valance. A new center step cutout in the rear bumper gives easy access to the cargo area and increases towing capacity on some models. Maximum towing capacity is 5,500 pounds when equipped with a 4.3-liter V6 engine, automatic transmission, a 3.42 or 3.73 ratio axle and an aftermarket weight distributing hitch. The stiff, four-sided ladder-type frame dips in the center to make it easier to step up and step down when getting in and out without sacrificing ground clearance for off-pavement driving. The stiff frame allows the suspension to do its job properly for improved ride quality and better handling. Now a popular choice, the third-door option for extended cabs was an industry-first for compact trucks when GMC introduced it. A driver's-side panel swings out to make it easier to load personal gear, pets and people. Buyers of two-wheel-drive Sonomas have a choice of three types of suspension tuning: Smooth-Ride for a sedan-like ride quality, Heavy-Duty for maximum payload and towing capability and Sport for the sharpest handling response on paved roads. The Sport, or ZQ8, suspension package for two-wheel-drive regular and extended cab models is designed for performance enthusiasts. This street suspension package enhances handling and goes a long way toward making the Sonoma ride and drive like a car. This is accomplished using shorter springs, high-performance gas shock absorbers, urethane bounce jumpers, front and rear stabilizer bars, specially tuned variable-ratio power steering and wide eight-inch aluminum wheels with Goodyear P235/55R-16 tires. An optional locking rear differential enhances traction on unpaved roads. Buyers of four-wheel-drive models have a choice of four suspension packages to suit their needs: Smooth Ride, High Payload, Off Road and Highrider. Distinctions include shocks, springs, and the wheel and tire package.
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