Questions & Answers for: Pontiac Montana heat pump blows cold sometimes

...heat inside.Its blowing cold air.In heater core IN hose is hot but OUT core is cold. sounds like a stuck thermostat. but check if the system has a bleeder screw if it does burp it and that will help ...

...HEAT After the latest cold snap we had a problem starting the van. Once she started we have no heat. The fans are blowing only cold air. As well we can not change from vents to anything else, like ...

cold air. sometimes the driver side vent blow cold air. is flapper valve stuck sometimes? That is correct, the air blend door actuator. "flapper valve" may need to be replaced or cleaned and free from

...cold air in the back the ac blows hotter air on the drivers side than the passenger side but its not cold like the back Either the door that controls whether air from the heater or ac is stuck in ...

...cold air no heat I have a 2004 Montana ext version. I bought the vehicle last January and now currently have around 158 clicks It just stopped blowing hot air the other day.. Just blowing cold air no ...

...heat out of my 2004 pontiac montana but it is not hot and sometimes when u have it on floor and defrost it will blow cold out of defrost and warm out of floor I have checked the coolant level it is ...

...pump and thermostat and coolent I would change the Thermostat. if that doesn't fix it? I would buy a Radiator flush and follow the directions exactly you will be surprised how much junk comes out. ...

...circulates the antifreeze, if that pump goes bad or the relay you may not be getting enough heat to your heater core to do you any good. Check these things out and I think you'll find your

pump. Those are the only two things that will stop flow. The radiator can get stopped up, but usually never FULLY stops flow. You will have minimal heat, but for no heat you definitely have no coolant

...heat gets hot in front, blows but seems weak, and no heat on rear controls but blows ******* rear. what is going on? Rear climate controls quit working as well as the DVD player, all fuses are good ...