The 2009 GMC Sierra 3500HD full-size heavy duty pickup is available in three body styles and two rear-axle designs: regular cab, extended cab and crew cab, with a choice of single or dual rear wheels (2WD regular cabs are available only with single rear wheels). All 3500HD models receive a "long" eight-foot cargo bed. Regular cabs are offered in base Work Truck or midlevel SLE trims; extended and crew cabs can also be had in plush SLT form. The Work Truck trim comes with a solid roster of standard equipment, including air-conditioning (optional with regular cab), a trip computer, a CD audio system with satellite radio, OnStar with turn-by-turn navigation, vinyl seating, a 40/20/40-split front bench seat and a tilt steering wheel.
The SLE trim adds deep-tinted windows, chrome-styled steel wheels, cruise control, full power accessories, heated exterior mirrors, dual-zone automatic climate control, cloth seating, keyless entry and a leather-wrapped steering wheel.
The top-of-the-line SLT is only available with the extended and crew cabs. It adds a locking rear differential, a heavy-duty trailering package (with an integrated trailer brake controller), remote engine start, an upgraded dash design, a Bose audio system (with a six-disc CD changer and rear audio controls), 12-way power-adjustable heated front bucket seats and leather upholstery.
Options, depending on truck configuration, include a backup camera, power-sliding rear window, a navigation system with available real-time traffic, a rear-seat DVD entertainment system, rear park assist, a sunroof, camper-style side mirrors, the Z71 Off-Road package (including skid plates, off-road suspension and locking rear differential), the safety package (including power-adjustable pedals and park assist), a cargo management system and an "EZ-lift" tailgate.