Question about 2008 Chevrolet Equinox

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Chevy equinox blows only cold air no hot

Hot water passes thru heater core okay, fuses (2) okay, unsure of relay.

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In the heater box, should be under the pass.side of dash, they have doors inside operated by vaccum, check that they are moving, if not, ck that you are getting vaccum, if so, ck the actuator running it. You can normally grab it with your hand and move the door & see if that gives you hot air.

Posted on Dec 28, 2008

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You hot air comes from the water circulated through the heater core. It is like a miniture radiator with water flowing thru it constantly. So by opening the "Blend Door" you are permitting so much of this hot air to pass thru.

Seems like for some reason your heater core is plugged up. Just like a radiator can be. So water may be passing through your heater core but not passing through fully. Your heater core gets hot from water passing throught it from the engine. Then your doors open up, in proportion to how much air is permitted to pass over the heater core.

Suggest to remove the heater core and replace it. Seems the blend doors are working properly but again, if you have a non working heater core then no air can pass over the "Hot Core" for you to recieve hot air.

If you are not mechanically inclined, then go to a local parts store and you can buy a car manual, such as Chilton's or Hane's Car manuals, for your year and make to show you how to replace it. Then you can also have it for any other problems that may arise.

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Tech JK
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