Guys, the sensors are on the heater core. There is one on each "side" and it senses how warm the air is that is flowing by in order to provide feedback to the climate control as to set the temperature of the air coming out the vents so that it (more or less) matches the setting on each ****. You can demonstrate this by settting the ***** at mid-point. Start a cold engine. As the engine warms, the duovalve will open less. The effect is, the air will rise with engine temp only to a certain point, after that, it stops rising as the feedback causes the duovalves to open less and less because the water is hotter.

There is no sensor, of course, telling the climate control what the temp in the cabin is, the system only regulates the temp of the air from the vents. I see no way for the BCM to know about window position, other than the BCM appears to know if hte windows are all the way up or all the way down. But there is no sensor to tell the BCM what the windows are doing, other than that. I don't have the manual near me, but I do think the Climate control is on the CAN BUS, I know the BCM is.