Ok, did some reading in the service manual. The heater air blend cold/warm flap is cable operated- i believe it's not hooked on my ride. Pressing the HEAT button the Heater Shut Off Door is opened, and when additionaly pressing the DEFROST button the Heater Defrost Door is opened to channel the air to the windshield. These two doors don't seem to work on my car. They are operated by vacuum actuators from what i understand. Need to fix this. I am also planning on adding a hitch on the back (mostly for a bicycle rack), do you guys know if i will have to make a cut in the rear skirt under the r/ bumper to get it done?