The GMC Sierra 1500 and Chevrolet Silverado share the same platform, but the GMC product is often positioned as a more upscale offering. Mechanically, the trucks are the same; they share the same powertrain and chassis components. Versions of the Sierra seat up to six people. Competitors include the Ford F-150 and Ram 1500.
The Sierra comes in regular, extended and crew-cab forms. Standard (6-foot-6-inch) and long (8-foot) cargo beds are available on regular and extended cabs, while the crew cab gets a short (5-foot-9-inch) bed. All configurations are available in two- or four-wheel drive. The Sierra comes in five trim levels: Work Truck, SL, SLE, SLT and Denali.
Most V-8 models are rated to tow around 9,000 pounds, but some models get more than 10,000 pounds with an enhanced trailering package. New for 2013
Light-duty Sierras with the 5.3-liter and 6.2-liter V-8s and a six-speed automatic transmission and heavy-duty models with the 6.0-liter V-8 now have engine braking on grades without having to use the Tow/Haul mode. Exterior
While GM is trying to differentiate the Silverado and Sierra, the common silhouette is hard to overcome, even with unique front fenders, grille, bumpers, headlamps, cargo box and taillamps. The upscale Denali trim features a unique chrome grille and wheels. Exterior features include wide rear-door openings on extended cab models to load passengers and cargo, a range of 17-, 18- and 20-inch wheels, available EZ Lift tailgate and an available power moonroof. Interior
The Sierra showcases two different interior designs. Lower-end trucks are more utility-minded, with large door handles that can be operated while wearing gloves.
The SLT offers upgraded materials and a different dash design. The Sierra's cab is spacious and well-organized. Leather seating is available on the SLE and standard on the SLT. The SLT also gets a Bose stereo and a 10-way power-adjustable driver's seat. The Denali trim is the most luxurious of any GM pickup truck with upgraded trim and materials. Interior features include stadium-style rear seating and cruise control. Available options include a power-sliding rear window, navigation system, rear entertainment system, integrated trailer-brake control, and a leather-wrapped heated steering wheel. Under the Hood
The Sierra offers five available suspensions, including an off-road-oriented Z71 package and the NHT enhanced trailering package. The 5.3-liter V-8 features fuel-saving cylinder-deactivation technology. Engine options include:
- 195-horsepower, 4.3-liter V-6 with iron block and cylinder heads, cam-in-block, two valves per cylinder and 260 pounds-feet of torque
- 302-hp, 4.8-liter V-8 with iron block and aluminum cylinder heads, cam-in-block, two valves per cylinder and 305 pounds-feet of torque
- Flex-fuel 315-hp (gas) or 326-hp (E85), 5.3-liter V-8 with iron block and aluminum cylinder heads, cam-in-block, two valves per cylinder and 335 pounds-feet of torque (gas) or 348 pounds-feet of torque (E85)
- Flex-fuel 315-hp (gas) or 326-hp (E85), 5.3-liter V-8 with aluminum block and cylinder heads, cam-in-block, two valves per cylinder and 335 pounds-feet of torque (gas) or 348 pounds-feet of torque (E85)
- Flex-fuel 403-hp, 6.2-liter V-8 with aluminum block and cylinder heads, cam-in-block and two valves per cylinder that makes 417 pounds-feet of torque
- Four-speed or six-speed automatic transmission
The Sierra's standard electronic stability system includes rollover mitigation technology. GM says its seat belt pretensioners activate during rear impacts. Safety features include four-wheel antilock brakes, traction control, side curtain airbags, and front-seat side-impact airbags. The available OnStar system alerts authorities after a crash, while available rear parking sensors and backup camera provide safe backing.
*Overview courtesy of Cars.com