A pivotal ingredient to the Chevrolet product line has been their truck offerings. Commercial, agricultural and even general consumers have appreciated the versatility of the rugged, trusted brand in the truck segment. Chevrolet's full-sized half-ton model is the Silverado offered in regular cab, extended cab and crew cab layouts. Beyond half-ton pickup truck capacity, Chevrolet offers the Silverado HD truck line. The Chevrolet Silverado HD offers the choice of heavy-duty transmission and Duramax turbodiesel powerplant to accomplish greater load handling. For the 2015 model year, the Colorado returned to the North American Chevrolet truck line-up as a medium-sized pickup.