heater does not work but the A/C works great?

2007 PONTIAC TORRENT

150,000 MILES • V6 • 2WD • MANUAL

JACOB MARINO

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The heater won’t work but the AC works great. I figured blend door but there’s no noise and when I turn the heat all the way up and set it to the foot heater I can feel just a little heat. Cold air out the front and windshield defroster but a weak warm blowing on the feet. Could it be a clogged heater core?

Nov 21, 2024 at 6:33 AM

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It could be the heater core, but can I ask if the blower motor is working? Can you hear the fan running? If so, I would check the temperature blend door actuator. If you remove the actuator, you can work the pivot by hand to see if it makes a difference when the system is on. Please go over this video as well:

https://www.youtube.com/watch?v=SNRb6pSwYuU&t

Here is the actuator location so you can check out and get back to me. Check out the images (below). Let us know what you find.

Images (Click to enlarge)

Nov 21, 2024 at 1:04 PM