Vents stay open

2001 GMC YUKON
215,000 MILES • 6.0L • V8 • 4WD • AUTOMATIC
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BMCFIELD
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  • 2 POSTS
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.
May 14, 2019 at 8:33 AM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 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.



May 15, 2019 at 10:46 AM
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BMCFIELD
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  • 2 POSTS
No noise. Vents just stay open when on cold or hot.
May 15, 2019 at 6:29 PM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
When you move the control can you hear any vent door moving?
May 16, 2019 at 11:29 AM