2015 Chevrolet Silverado and GMC Sierra heavy-duty pickups
GM has clothed its re-engineered heavy-duty pickups in fresh sheet metal and provided nicer interiors for 2015 in an effort to capitalize on surging demand for big workhorse trucks.
The 2015 Chevrolet Silverado and GMC Sierra 2500 and 3500 models keep the same powertrain lineup they have had since a major overhaul for the 2011 model year: a 6.0-liter V-8 and a 6.6-liter Duramax turbodiesel. But a new exterior and cab design adds several features found on GM's light-duty Silverado and Sierra 1500 released this summer. They go on sale in early 2014.