no heat

Hey Peeps. I have a 2010 Town and country Touring with the 4.0L engine. I can only get heat at high RPMs. I have replaced the heater core. Bled the system as best as I could with the front end off the ground. I have good heat until I pull out of garage then the passenger side temp goes cold...

So went to use the heater for the first time and after 15 minutes of "warming up" only the mere hint of heat. After 30 minutes it was warm on the high setting. It has Automatic Temp Control and the issue applies to the whole van ... Driver, Passenger and Rear heat. It also occurs at all temps...

I'm going to search threads but thought I'd ask my specific question. 2005 T&C 1) Front fan works well; nothing coming from rear fans (front and rear controls are set properly). 2) Checked coolant. It was very low...as in below the MIN level. Added coolant to just below MAX level. 3) After...