then the blend door is located just to the right of the gas pedal. Dealers say they're not serviceable and realistically I don't think you can buy them separately, but I see plenty of posts with details on how to service them yourself.

 

if the blend door is your issue, I see a lot where it's a dealer only item because it supposedly has to be replaced with the evap housing. But then I see a ton of other posts and videos on doing the repairs yourself.

The blend door is located just to the right of your gas pedal behind the panel above your feet.