The WT ($20,850) is a basic work truck that comes with a driver information center, AM/FM/XM stereo, 40/20/40 split-bench, vinyl-covered front seat, dual glove boxes, two auxiliary power outlets, tire pressure monitoring system, OnStar and a four-speed automatic transmission.   The LS Crew Cab ($30,360) offers lots more in the way of features.  

The LT ($26,810 for Regular Cab, 2WD) adds a cloth-covered front seat with lockable storage under the seat, a CD player and MP3 compatibility, power windows/locks/mirrors, remote keyless entry, auto-dimming rearview mirror with compass and outside temperature displays, chrome front bumper and 17-inch styled steel wheels, and power folding and heated exterior mirrors.   LT models can be upgraded with premium cloth front bucket seats with six-way power adjustment, dual-zone automatic temperature controls, audio controls mounted on the steering wheel, fog lamps, aluminum wheels, chromed bumper, and a spare tire lock.  

The LTZ ($35,280 for Extended Cab, 2WD) adds heavy-duty trailering equipment, an automatic locking rear differential, body-colored bumpers, reclining and heated leather front seats with 12-way power, an in-dash six-CD changer with Bose speakers, 18-inch wheels, turn signal indicators in the exterior rearview mirrors and heated windshield washers.  

Extended Cab and Crew Cab models have back seats and windows in the side doors that power down.   The Crew Cab has four front-hinged doors, much like a sport utility vehicle.   The Extended Cab has rear access doors hinged at the rear that open to 170 degrees to provide full access to the rear seating area.   The Regular Cab can be outfitted with a standard bed (6-foot, 6-inch) or long bed (8-foot).   The Extended Cab also offers a short (5-foot, 8-inch) bed.   The short bed (5-foot, 8-inch) is the only bed available on the Crew Cab.  

Five suspensions are available: Z83 is the standard setup designed for a smooth ride; Z85 is a little firmer for enhanced handling and towing; Z71 is for off-road driving and includes 18-inch wheels; Z60 is for maximum street performance and includes 20-inch wheels; NHT is for maximum towing capacity (bigger rear axle with locking differential, HD cooling, and so forth) and includes high-capacity rear springs as well as all-terrain tires.  

Option prices vary by trim level and body style.   Among them: A power sliding sunroof ($995), 20-inch wheels/suspension ($1,045), a power sliding rear window ($250), rear-seat entertainment system ($1,480), and navigation system ($2,250).   Options on lesser models include the locking differential ($325) and various levels of towing packages.  

Safety features on all Silverado models include dual front airbags, anti-lock brakes, tire-pressure monitoring system, side-curtain airbags, and StabiliTrak electronic stability control with rollover mitigation technology.