I have a 2001 with the single dial manual AC system. Only getting air out of the defrost vents. I see the videos online for the recalibration procedure…does that apply to this truck or should I be chasing a vacuum leak?
Hello, to try and " reset" it you can unhook the negative battery cable for about 10 minutes then reconnect the battery cable and try again. If that does not work it will more than likely be the actuator for that function. Most of the time they're called blend door actuators.