GMC is taking premium to the next level with expanded availability for its carbon fiber bed, 3.0L Duramax turbo-diesel and 10-speed automatic transmission, plus additional technology like Adaptive Cruise Control - Camera1 to elevate the ownership experience in the 2020 Sierra 1500. The updates add to a robust portfolio of technologies that deliver an innovative and premium ownership experience. "The Sierra is delivering the tech customers want in the light-duty truck market, and the 2020... continue