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I'm having trouble understanding why my 2012 Chevrolet Cruze a/c and heat work intermittently. I have enough coolant, no overheating, I replaced the fan fuse, and I have no leaks in my car of any sort. No check engine light and my a/c and heat dont blow out of any vents. Sometimes it works but lately it hasnt for two months straight. I'm also having trouble finding the blower motor to check if it's the motor. Is there anything I can do to find out what the root of the problem is? I can hear it also trying to blow but no air comes out.

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Sounds like a failed blower motor resistor, located on the side of the motor housing.
You will find the blower motor on the passenger side footwell of the car. Access by either under the glovebox compartment, or else by removing the glovebox completely.
I will attach an image, but they vary in what they look like .

That or else you have a failed actuator or cable mount for changing the directional flow of air in the system. This will be determined whether its a manual turn knob on the climate control unit or else an electronic system. If electronic , be sure that the flap control actuator is working and moving the flaps on the heater manifold correctly .
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Posted on Apr 16, 2019

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The service and repair manual with pictures and diagram will give you step by step help to locate and fix the problem on your own easily and you will get the manual from the given link

Posted on Apr 16, 2019


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Posted on Jan 02, 2017

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SOURCE: a/c not cold overheating were fusebox

The fusebox is located on the drivers side/ dashboard. You must have the door open to access.

Posted on May 28, 2009

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SOURCE: Fan blows intermittently. Sometimes works, sometimes doesn't

You need to replace the motor and resistor at the same time. The motor is not turning freely enough and will build up resistance in the wire and this will short out the resistor relay. I sold a lot of resistors working at a Isuzu dealer and if you did not replace the motor, the new resistor had no warranty on it. So if you just replace the resistor relay you will burn it up again.

Posted on Aug 12, 2009

  • 4669 Answers

SOURCE: 2002 Cadillac DeVille, AC/Heat blower not blowing out air

Have you tried smacking the blower motor? If it starts running after you hit it, replace it.

Posted on Aug 20, 2009

  • 6927 Answers

SOURCE: Have 97 grand prix and no heat blows out of vents.

There is a vent door actuator motor,that operates the vent door top bottom vent.It is most likely on the bottom of the blower box,near the center of the dash underneath.And the blower only going to high speed,and no low speeds,is either the blower motor resister,or the blower motor relay is stuck.

Posted on Oct 13, 2009

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SOURCE: A/c Heat Fan in 1995 Jeep Cherokee doesnt work. I

there is a blower motor resistor that cuts the voltage for the different fan speeds. this is most likely the culprit. check, you can get access to location and wiring diagrams to be more familiar with it. you have to register and it's free. the switch or wiring might also be bad, when in the high position, the switch effectively bypasses any resistor. although the voltage still runs through the assembley. a repair manual is you best option

Posted on Feb 26, 2010

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