Heater blowing cold air

Tiny
STRELESKMIKE
  • MEMBER
  • 1996 CHEVROLET 1500
  • 220,000 MILES
I have replaced thermostat and heater core it is topped off on coolant both hoses are getting hot, but I still only get cold air to blow out. Any ideas?
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Saturday, March 17th, 2018 AT 10:30 AM

7 Replies

Tiny
JGONZO2398
  • MEMBER
I have done those same procedures on my 2002 Ford Taurus, plus I also replaced the blend door actuator, which I would suggest replacing. In my case, that did not fix my no heat problem, so it all adds up to the actual blend door/plenum chamber that moves in order to release hot or cold air. But my best bet for now is that it is your blend door actuator.

Just my two cents though. Hope it helps!
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Saturday, March 17th, 2018 AT 10:35 AM
Tiny
JGONZO2398
  • MEMBER
Here is the actuator for your truck on Autozone.
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Saturday, March 17th, 2018 AT 10:39 AM
Tiny
JGONZO2398
  • MEMBER
I do not know what exact engine you have or if it is P/U (Pickup) or SUB (Suburban), but I am sure this part would fit both regardless.
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Saturday, March 17th, 2018 AT 10:41 AM
Tiny
STRELESKMIKE
  • MEMBER
Thanks for the ideas. I will try getting the actuator next Friday and it a 4.3 l v6 two wheel drive pickup.
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Saturday, March 17th, 2018 AT 10:58 AM
Tiny
JGONZO2398
  • MEMBER
No problem, I hope it helps, and let me know! I checked the part again with the information you gave me and it is a fit. I guess it does not matter what engine it is, V6, V8, whatever. But I have posted another screenshot of the blend door actuator, same brand (Dorman), and much cheaper. So I would suggest just buying that one.
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Saturday, March 17th, 2018 AT 11:05 AM
Tiny
JGONZO2398
  • MEMBER
Here is a link to the actual replacement procedure:

https://www.2carpros.com/articles/replace-blend-door-motor
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Saturday, March 17th, 2018 AT 11:06 AM
Tiny
STRELESKMIKE
  • MEMBER
Thank you for all of this it will make the process much easier and I will let you know next week if it works.
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Saturday, March 17th, 2018 AT 11:07 AM

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