Shop 2020 GMC Sierra 3500 vehicles for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 147 2020 Sierra 3500 models nationwide.

Shop GMC Sierra 3500 vehicles in Atlanta, GA for sale at Cars.com. Research, compare, and save listings, or contact sellers directly from 21 Sierra 3500 models in Atlanta, GA.

More than 85 years after it rolled off the line, this 1937 T14B GMC truck is getting a second lease on life, as seen in this extensive restoration video.

GMC Sierra HD pickup truck deletes several model configurations offered previously for the 2025 model year. Now, GM Authority ...