Question about 2005 Chevrolet Equinox

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No heat in vehicle . both heater hoses are hot

No heat in cab  both heater hoses are hot. turning climate control knob produces only cold air

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  • Anonymous Mar 13, 2009

    I have an 06 Equinox with the same issue. I got it checked from local mechanics and Chevy. They all said it was the "blend door" that it's about a 1600 dollar fix, and isn't guaranteed not to break again within two months. GM won't recall it because they don't see it as a "hazard". I personally find it to be an issue when my defrost can't work properly with the right air temperature...

  • jplumridge Apr 01, 2009

    I have a 2005 equinox with 38000 miles. The heat actuator door has failed. No heat at all. Dealer is now fixing for 1300.00. They said you have to remove most of dash to repair. Car is out of warantee, its my problem and my last GM car!!

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Seems like your mode door actuator for hot cold has failed. Temp Mode Door Actuator needs replaced

Posted on Mar 05, 2009

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The temp blend door is broken, they break all the time.

Posted on Mar 16, 2009

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I only get cold air in the cab 2001 ford f150 5.4 triton. I checked coolant and have no problem. I checked the heater hoses and they are both getting hot. Blend door also opens and closes normally.


You have a Heater Valve inline with one of your heater hoses. It has a single vacuum hose going to it. Check your vacuum source first, also pull a vacuum on the valve itself to see if it holds a vacuum. If the valve doesn't hold vacuum-replace it. If you aren't getting vacuum to the valve, then something is wrong with your climate control(heater setting/ac) or the plastic vacuum line is cracked somewhere between your knobs, through the firewall, to the valve itself.

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You can check the voltage from the climate controller itself to make sure its sending the proper signal/reference voltage/ ground etc to allow the heater to function properly. I work for AutoEcu1, an automotive electronics rebuilder and supplier and we see a lot of these Climate controllers for this particular vehicle and also a variety of abs ebcm ecu ecm pcm tcu and many other controllers for MANY other vehicles. I hope this info helps. Please let me know if you have any questions or need ANY FORM of assistance just post here or call 800 921 9060.
Regards,
-Tim

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The heat does does not work in my 98 Tahoe at all its blows cold all the time I have done changed the there and put new coolent in it still have no heat so I by pasted the heat valve and ran it right in...


If you are getting hot water/coolant to the heater core and still no hot air coming out the vents, then it's a issue with the climate control or blend door. After running your engine and it reaching normal operating temp, locate your heater hoses that goes to the heater core. Carefully touch them to make sure both hoses are hot to the touch, if they are, you are getting hot water/coolant to and from the heater core. So, then it will have to be a issue with the climate control in the dash or either the blend door in the air box. It's a common problem for the climate control to go out on these models, hope this helps.

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What kind of setting do you have? is it turn knob, push button or something else?

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Look for a heater valve on one of the hoses if there is no valve i would say its a plugged heater core.

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You need to check your coolant level first & make sure its up where it should be. If that doesn't cure your problem, or you've already topped it up, please get back to us.

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Had the same problem with my Mazda6 awhile back. Took it to the dealer and they found the radiator wasn't holding pressure. They replaced the whole radiator under warranty (WHEW!). Not sure how to check for that kind of thing, but it's a start.

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1 Answer

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Let me know if the valve opens or not using the climate control.

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