The 2015 GMC Sierra 1500 - About - News & Issues
Like the 2015 Silverado 1500, GMC’s Sierra 1500 will be receiving an eight-speed transmission for its large 6. 2-liter V8 engine later in the year. The updates continue for the Sierra 1500, however, with the magnetic ride control MagneRide system coming to the top-of-the-line Denali trim, along with a spray-in bedliner. Also debuting on the 2015 Sierra 1500 is the OnStar system with its own LTE hotspot and power-folding mirrors for trailer towing. The Sierra 1500 begins with a 3-passenger regular cab, combinable with either a 6. 5- or an 8-foot bed. The Sierra 1500’s 4. 3-liter V6 comes standard on all trims except for the top-of-the-line SLT, churning out 285 hp and 305 lb-ft of torque. Rear-wheel drive models equipped with the engine see 20 mpg combined (18 mpg on city streets and 24 mpg for the highway), while four-wheel drive versions return 19 mpg combined (17 mpg city/22 mpg highway mileage). 3-liter V6 comes mated to a six-speed automatic transmission and enables the Sierra 1500 to tug along up to 7,200 lbs. The SLT trim swaps the V6 out for the 5. 3-liter V8 engine, increasing output to 355hp and 383 lb. -ft of torque. Combined with rear-wheel drive, the 5. 3-liter delivers 16 mpg in the city and. Source: trucks.about.com
