I have a 2005Chrysler minivan front heat does not blow back heat blows cold cold air front doesn't blow at all what could this be

SOURCE: heat works on driver side, passenger side blows cold air.

Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.

SOURCE: front heat works, but rear blows cold air only

With your front heat working the most likely cause for the rear heat not to work is that there is an obstruction in the line that is preventing the warm coolant to get to the rear heater core or the rear heater core itself is plugged and not circulating. Another possible cause could be low coolant level where the system has enough coolant to provide the front system with enought warm coolant but not the rear system. Hope this helps

SOURCE: Why does my Heater blow cold air in the front

its the blend door behind the glove box. I had the same problem

SOURCE: rear heater only blows cold air...front of cab

might have dual heater cores rear core might be bad or trying to plug up

SOURCE: The A/C unit is not blowing cold air in the front.

your split manifold located on the firewall that sends and directs the refrigerant from the front and rear depending on your setting on the dash is plugged or the climate control on the dash is not responding and there could be a fuse,relay,broken wire,but there cant be a leak or either side wouldn't cool