Every timeI started my 07 LTZ and turned on the A.C. itgoes to
the recirculate mode, I would have to push theoutside air button,
as I only want fresh air to be cooled.
I went to the dealer to see if there was a software fix to get it to default to outside air.
He showed me that if you move the 2 temperature ***** one click
up from the lowest possible setting, it will not go to recirculate.
Now I am happy.
Jim

 

interesting.
I guess if you want the coldest air- (lowest setting) it reuses interior air..
.neat