DETROIT — The all-new 2019 Sierra set the new benchmark for capability, refinement and innovation when introduced earlier this year. Now, the GMC Sierra Denali is arriving at dealerships and strengthening GMC’s position as the preeminent brand for premium truck buyers. Denali is the flagship of the next-generation Sierra lineup, distinguished by iconic design cues and DETROIT — The all-new 2019 Sierra set the new benchmark for capability, refinement and innovation when introduced earlier this year. Now, the GMC Sierra Denali is arriving at dealerships and strengthening GMC’s position as the preeminent brand for premium truck buyers. Denali is the flagship of the next-generation Sierra lineup, distinguished by iconic design cues and