2000 GMC New Sierra 1500 "heat car turns colder" Questions

...Heater is stuck on full heat. It is not responding when I turn the dial to make colder. sounds like you have a bad actuator motor that is what moves the door in heater box to change from hot to ...

...heat! A/C works and will blow out colder air when turned down just won't produce any heat. You could have a problem with whats called a mixing door, it's not changing position from AC to the heater ...

...Heat no longer comes out. The the thingy that turns hot to cold still works cuz when I turn it to cold its a hole lot colder and there is a more flow. Friend had me pick up a thermostat. But would ...

car after 5 mins my heat comes through the vents.. Any solutions?? The heat that you get from the car's heater is extracted from the engine coolant. When you first start the car, the engine coolant is

...colder months because water freezes and makes the gas hard to pass through to the injectors and greatly effecting the engine firing properly. Heat will dry this water up and make your fuel ...

...heat will not work? start with the car off and find the heater hoses. have someone turn the car on and feel for a difference in heat coming from either of the hoses. There should be no change in heat ...

...heat OK, just set the temperature to 'Auto/Econ' on the buttons on the heater control and adjust the 'temperature' up or down with the hottter/colder buttons until it has a comfortable temperature ...

heat is on at my feet but not much 1st. make sure it is full of antifreeze/water. The defrost will be colder because the A/C comes on when defrost is turned on. The next thing is you may have a heater

...heat. It is not responding when I turn the dial to make colder. It does not respond when I turn the A/C on. How can I fix this? Did you ever find a solution to this problem? My 2001 Sierra does the ...

...heat on defrost or i turn the a/c on i loos power and car quit running. what could be wrong? CHECK THE VACCUM LINE FOR LEAKS If it runs okay before turning on the a/c or defrost, I'd be checking out ...