General Motors is aiming to differentiate the 2019 GMC Sierra from the competition -- and from its Chevy Silverado sibling -- through additional luxury amenities and technologies that the automaker calls segment-leading. Improvements to the redesigned Sierra, aside from a bolder styling and weight reduction of up to 360 pounds, begin in the rear with a new standard tailgate for its SLT and Denali trims. The "MultiPro Tailgate" offers features and multiple positions that allow it to be used as a standing workstation, a step for climbing into and out of the bed or as a seat. Later in the model year, the 2019 Sierra Denali will be available with an industry-first carbon fiber composite box. The Sierra SLT and Denali trims will come standard with a 5.3-liter V-8 and eight-speed automatic transmission.