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Blend door actuator

Tiny
JGAJRAMOS
  • MEMBER
  • 2004 GMC YUKON
  • 151,000 MILES
If the sir conditioner is not blowing cold air all the time and sometimes only on passenger side which blend door actuator should I fix first?
Wednesday, June 22nd, 2016 AT 9:28 AM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

Here is a great guide on which actuator does what

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

Let me know how it goes

Best, Ken
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Wednesday, June 22nd, 2016 AT 9:36 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
On a GM product that symptom is very often incorrect refrigerant charge. I would advise having it evacuated and recharged with the specific weight of refrigerant.

You can easily rule out blend doors by simply pinching off one of the heater hoses for testing.
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Wednesday, June 22nd, 2016 AT 12:02 PM

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