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Air conditioning not working?

Tiny
KEVIN FRY
  • MEMBER
  • 2001 CHEVROLET SUBURBAN
  • 4.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 275,000 MILES
My compressor is running fine it has the proper charge of 134A. Lines cold and its condensation. But I'm either getting vent air out of dash or a blend door is half open to the heater core. My blend door went out that controls where the air comes out defrost floor or panel I replaced that one. The one above the passenger floor I took off and turned it but made no difference am I missing somethin is there another blend door that regulates temp. Help please thanks.
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Saturday, June 19th, 2021 AT 8:21 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,833 POSTS
Yes, there is a mode blend door actuator which need to be replaced. Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car:

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

Check out the diagrams (below). Let us know what happens and please upload pictures or videos of the problem.
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Sunday, June 20th, 2021 AT 12:42 PM

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