[Hersbird]

Originally Posted by freebeard

I don't see the difference. What year Silverado is that? My son bought a 2018, but the big advance is on the 2019 models:


gmauthority.com:2019 Silverado And Its Aero-Enhancing Air Curtains: Feature Spotlight

The SS was from 2003 to 2006 I think. The problem with the new truck is they may have reduced the Cd but they increased the frontal area for an overall increase in overall drag. At least the economy numbers went down on the drivetrains that didnt change 2018 to 2019 while the 2019 lost weight as well.