This happens occasionally with me but it never lasts for more than a minute or so then normal cooling resumes. It usually only happens within the first 5-10 minutes of the trip and doesn't repeat itself on long trips. I do get the smell but that is only momentary as well and stops after a minute or so. It has the feel of a software problem with the auto climate control to me. My impressions are that the Auto climate control system in these trucks leaves something to be desired. It does work but seems to have trouble pulling off all the things they are trying to control. The auto defog system tries to control cabin humidity as part of that function which makes sense. I have always thought the temporary rush of warm humid air was part the systems attempt to control cabin humidity. It just seems to be very clumsy at it. That said I don't live in an area that gets 100+ temps so the events may be more extreme under those conditions. I know that I do notice it more frequently when we get in the 90+ temps.
2016 GMC Canyon EC All Terrain V6
Last edited by mdusen1216; 10-05-2016 at 08:31 AM.
Reason: had another thought.