Let me start off by saying that when I first got my Journey I had no problems with it. Battery issues started about 3 years ago and that was resolved up until this year. Loose battery cables are an issue with this car. This has been resolved once again. A year and a half ago it started to not blow hot air out of passenger side and semi warm from driver's side. Heater core and thermostat were replaced and issue resolved long enough for me to get through most of the winter. So that issue is now an issue again on top of cold air on driver's side as well and a couple of weeks ago we noticed that there is no air blowing out of the rear ceiling vents. I'm at a loss at what to replace at this point. Could someone give me some insight. Should I replace the heater core again and all 3 of the blend door actuators? And what would be the reason I am not getting air from the rear vents?