so i have a 99 Grand Cherokee limited, with the dual climate controls.
i turned my heat on the other day and while there was air comming out of all the vents, the vents on the driver side was blowing cold air. the passenger was blowing nice hot air. interesting huh? when i switched the control to defroster, the air blowing was cool as well. at first i thought (and was told) that it was the thermostat, but once i figured out that there was hot air comming out of some of the vents and not others i guess that kind of debunked that theory. Anyone ever have this problem? or know what it could be?