1. GMC Sierra/Chevrolet Silverado
The Chevrolet Silverado and GMC Sierra top our list as the best selling pickup since 1990, but that isn’t without an asterisk. Chevrolet and GMC combined truck sales from 1990 through 2011 equal to 15.9 million units, outselling the Ford F-Series by almost 330,000. Here’s the catch: If you look at the sales separately, (GMC Sierra with 3.9 million and Chevy Silverado with 12 million ) Ford’s F-Series outsold both of the trucks. However, the GMC Sierra and Chevrolet Silverado are the exact same truck, and therefore we lumped the sales together.