Hello everyone, I have a 2014 Chevy Silverado, and after taking my truck in for service when it was under the bumper to bumper warranty I basically got the run around answer to my recirculation complaint, and they explained that the system was not air tight, well! I called bullshit on that one and I can prove it, so I have found the answer to most of your complaints, I removed my lower glove box and removed my cabin filter and looked at the recirculation door while I pressed on the recirculation button and guess what? The door does not move and is stuck in the open position which explains why our cars smell all the outside fumes, I checked the recirculation door actuator as well, it moves freely when I removed it from the door, the only possible issue now is it’s a software issue, I really do hate the Chevy service departments and corporate as well, they represent what a shitty company General Motors has become, by the way... I am a service technician and I work for Land Rover and we don’t treat our customers like this