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

Tiny
JACOB MARINO
  • MEMBER
  • 2007 PONTIAC TORRENT
  • V6
  • 2WD
  • MANUAL
  • 150,000 MILES
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?
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Thursday, November 21st, 2024 AT 6:33 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
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.
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Thursday, November 21st, 2024 AT 1:04 PM

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