Heater only blows cold air?

Hi,

Based on your description, it sounds like the blend air door actuator is going bad. The blend air door is what controls the air temp entering the vehicle. What I would suggest is to remove the actuator and then see if it moves when you change the temperature.

This actuator is located under the hood on the HVAC box. Here is a link that you may find informational. It explains in general how one is replaced. This will give you an idea of what you are looking for.

https://www.2carpros.com/articles/replace-blend-door-motor

If you determine it is bad, here are the directions specific to your vehicle for replacement. The attached pics correlate with the directions.

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First, pic 1 shows the location on your vehicle.

Here are the directions.

2014 Chevy Truck Equinox FWD L4-2.4L
Temperature Valve Actuator Replacement
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Removal and Replacement HVAC - Manual Temperature Valve Actuator Replacement
TEMPERATURE VALVE ACTUATOR REPLACEMENT
Temperature Valve Actuator Replacement

see pic 2

see pic 3

Let me know if this helps.

Joe

For this concern you will need an advance scan tool to try and re-calibrate all the servos. That is the first step. If it does not calibrate then a fault code will set for the faulty servo. What you can try and it may or may not work is disconnecting the battery for 15 minutes. Reconnect the battery and turn the ignition switch on with out cranking the engine over for one minute. It may just do a self calibration on its own. Let us know if that resolves the issue. If it does not then you will need a professional shop to do the calibration with the scan tool.

https://www.2carpros.com/articles/car-heater-not-working

Please run down this guide and report back.

Hello,

It sounds like the mode actuator is out. here is a guide to help you see what's going on and instructions to change the actuator in the diagrams below for your car:

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (below). Please let us know what happens.

Please let us know what you find. We are interested to see what it is.

Hi,

It could be either. First, is the engine coolant full? Second, if you have the engine running and the heater on, do both heater core hoses get hot? If they do and the coolant is full, chances are the blend air door is the issue. If only one heater gets hot and the other doesn't, then the coolant isn't flowing through the heater core. However, if the heat was working fine and then stopped, there is a good chance the blend air door is the issue.

Take a look through this link. See if it helps.

https://www.2carpros.com/articles/car-heater-not-working

If you feel the blend door actuator is the problem, here is a link that shows in general how one is replaced:

https://www.2carpros.com/articles/replace-blend-door-motor

Here are the directions specific to your vehicle. The attached pics correlate with the directions.
___________________________________________________

2010 Chevy Truck Equinox FWD L4-2.4L
Temperature Valve Actuator Replacement
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Removal and Replacement HVAC - Manual Temperature Valve Actuator Replacement
TEMPERATURE VALVE ACTUATOR REPLACEMENT
Temperature Valve Actuator Replacement

see pic 1

see pic 2

_________________________________________________

Let me know what you find or if you have other questions.

Take care,
Joe

Hello,

This sounds like you have a temperature blend door actuator what is out and needs t be replaced. This guide will give you an idea of what you are in for when doing the job.

https://www.2carpros.com/articles/replace-blend-door-motor

Also check the engine coolant level as well becasue if it is low the heater is the first thing to stop working.

https://www.2carpros.com/articles/car-heater-not-working

Here is how it will be on your car (below) which show the blend door actuators locations.

Check out the diagrams (Below)

Please let us know what you find.

Cheers

Use 2CarPros anytime, we are here to help. Please tell a friend.

Cheers

Good afternoon,

I would check the coolant level to be sure the level is correct.

https://www.2carpros.com/articles/car-heater-not-working

Also, I would replace the thermostat. That will cause low heat.

https://www.2carpros.com/articles/replace-thermostat

Lastly, it could be a clogged heater core. Remove the hoses from the firewall and run a garden hose back and forth in the core tubes until you get a even flow.

Roy

It could still be clogged in the core.

Roy