If you push this button on a 2014+ GM/Chev, does your truck keep blowing an annoying amount of air out the defrost vent? I had heard there were updates to the HVAC module, but don’t know if it changes the behaviour. If yours is newer and doesn’t blow out the defrost, lemme know so I can take it to the dealer. I had been dealing with it, but now tired of the extra noise, surprised it works this way. That button implies floor heat only, no?