The 2013 GMC Sierra 1500 is offered in standard cab, extended cab and crew cab body styles. Standard cabs and extended cabs are available with either a standard 6-foot-6 bed or an 8-foot long bed. Crew cabs only come with a short 5-foot-8 bed.
Regular cabs can be had in base Work or midlevel SLE trims. An SL trim slots in between the Work and SLE and is available in extended and crew cab styles, as is the well-appointed SLT trim. The range-topping Denali is crew cab only.
The Work trim comes with air-conditioning (for extended- and crew-cab versions), a trip computer, a tilt steering wheel, cruise control, OnStar telematics, vinyl seat upholstery, a 40/20/40-split front bench seat and a CD/MP3 stereo with an auxiliary audio jack and satellite radio. The SL adds full power accessories, keyless entry, cruise control, satellite radio and adjustable lumbar support for the driver.
The SLE trim adds upgraded seat upholstery, a lockable compartment with a power outlet built into the center cushion of the split front seat, an auto-dimming rearview mirror and a leather-wrapped steering wheel. The premium SLT piles on chrome-clad alloy wheels, a premium interior with a full center console and premium materials, a Bose audio system (with iPod/USB input), leather seat upholstery, remote engine start, an exclusive dash design with wood and metallic accents, 12-way power-adjustable/heated front seats and rear audio controls.
Sierra Denali models trump the SLT with a unique powertrain, suspension tuning emphasizing ride comfort, 20-inch wheels, exterior styling enhancements, a heated steering wheel and a turn-by-turn navigation feature for OnStar.
Option availability varies with trim levels and body styles. It includes several towing packages, the Z71 Off-Road package (skid plates and an off-road suspension), special regional packages, the All-Terrain package (similar to the Z71 but with special interior and exterior enhancements) and the XFE (extra fuel economy) trim variant for the rear-wheel-drive 5.3-liter V8 crew cab. The XFE features aerodynamic enhancements and lightweight aluminum components that slightly improve fuel economy.
Other options include 20- and 22-inch wheels, a rear back-up camera, upgraded audio systems, Bluetooth, a navigation system with real-time traffic, a rear-seat entertainment system, heated power-folding outside mirrors, a sunroof, a power-sliding rear window, rear parking sensors and ventilated front seats. An "EZ-Lift" tailgate is also offered and requires only about half the effort to open and close compared to the standard tailgate.