The Sierra Work Truck includes few frills. Standard features include a stereo, two power outlets, a heater, a rubber floor and a dual glove box. You get an overhead console, tilt-steering and a year's worth of OnStar. Options include air conditioning, cruise control, and power windows and door locks. The WT Convenience Package includes power door locks, remote keyless entry and stereo with a CD player. Moving up to the SLE1 nets WT options plus an auto-dimming rearview mirror with compass/temperature display, leather-wrapped steering wheel and extendable sun visors. SLE1 options include a power sliding rear window on Extended and Crew Cabs, a sunroof, steering wheel-mounted controls, a remote vehicle starter system, adjustable pedals, dual-zone climate control, and side curtain airbags.