The 2019 GMC Sierra flaunts its upscale mission with more exterior and interior distinctions. The Sierra is the highest-volume model in the GMC portfolio, reflecting the market shift to trucks, and it has become the foundation for the brand; top-of-the-line Denali models command 75 percent of sales.
The 2019 Sierra gets bold new looks and a number of segment-leading technologies; GMC claims the ne
