Heater is not working? IM cold!

Hi.

It could be an actuator for the blend air door or there have been a few issues with the door being stuck or the shaft that attaches to the actuator is broken.

However, you asked for an approximate cost. According to my manual, the air temperature actuator shows 0.4 hours to replace. So, it's a little more than a half hour labor. The part shouldn't be much more than $40.00.

If you want to replace it yourself, and you can, first here is a link to check out that shows how in general one is replaced:

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

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

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2006 Chevy Truck Equinox AWD V6-3.4L VIN F
Air Temperature Actuator
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Procedures Air Temperature Actuator
AIR TEMPERATURE ACTUATOR
AIR TEMPERATURE ACTUATOR REPLACEMENT

REMOVAL PROCEDURE

pic 1

1. Remove the instrument panel compartment.
2. Disconnect the electrical connector from the air temperature actuator.
3. Remove the air temperature actuator screws from the HVAC module.
4. Remove the air temperature actuator from the HVAC module.

INSTALLATION PROCEDURE

pic 2

1. Align the air temperature actuator with the door shaft and rotate into position.
2. Install the air temperature actuator screws to the HVAC module.

Tighten the screws to 1.5 N.m (13 lb in).

NOTE: Refer to Fastener Notice.

3. Connect the electrical connector to the air temperature actuator.
4. Calibrate the actuators by simultaneously pushing the A/C and RECIRC buttons on the HVAC control module three times each, within two seconds of initial push.
- The A/C and RECIRC button LED's will flash while this calibration is taking place.
- The calibration will take anywhere between 10 to 30 seconds depending on battery voltage.
- The LEDs will quit flashing when the calibration is complete.

IMPORTANT: Any time an actuator or the HVAC control module is replaced, the HVAC control module must be calibrated to ensure proper air distribution.

5. Cycle the ignition and verify proper operation.
6. Install the instrument panel compartment.

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What I would suggest is to remove the actuator and see if it moves when you change temperature from cold to hot and back. If it does, the actuator is good. At that point, we will need to see what has failed in the heater box.

Please feel free to let me know if you have other questions or need help. I hope this is helpful.

Take care,
Joe

With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. This guide can help us

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

Please run down this guide and report back.

First make sure your coolant is full to where it needs to be, you also may need you water pump replaced, but before doing so, check the drive belt, it could be slipping thus not giving the necessary rpms to get the coolant circulating. Here is a guide that will help as well.

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

Please run down this guide and report back.

Check the hoses going to the heater, one should be hot and the other warm. If ne is warm and trhe other cold the heater core may be clogged, and need to be back flushed.

Hello,

Wait until the engine is cold then remove the radiator cap to check the coolant level start the engine once the cap is off to get a running level and add as needed.

Here is a a guide that can help:

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

Please run down this guide and report back.

Cheers, Ken

I have seen the heater core trap air inside of it for this you must jack the rear of the car up with it running (hot) to purge the air out. Can you confirm the heater hoses are hot going into and coming out of the firewall?

It seems weird for the RPM's to make the heater work if both hoses are hot. Lets check the blend door actuator. Here is a guide to help remove the actuator and work the pivot by hand to see if you get heat:

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

Here is the location of the air temperature door actuator.

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

At this point you could have internal damage such as a blown head gasket due to previous overheating or you may just not be getting all the air out.