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Vents stay open

Tiny
BMCFIELD
  • MEMBER
  • 2001 GMC YUKON
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 215,000 MILES
My vents will not closed even when switch is closed. Can't blend temperatures. Either hot or cold, not warm. Controls will not change to different location like defrost.
Tuesday, May 14th, 2019 AT 8:33 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hello,

It sounds like you have two blend door actuators that are bad can you hear any noises? Here is a guide to help you change the actuators out:

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

Please run down this guide and report back.

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Wednesday, May 15th, 2019 AT 10:46 AM
Tiny
BMCFIELD
  • MEMBER
  • 2 POSTS
No noise. Vents just stay open when on cold or hot.
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Wednesday, May 15th, 2019 AT 6:29 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
When you move the control can you hear any vent door moving?
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Thursday, May 16th, 2019 AT 11:29 AM

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