Sudden loss of air flow from dash vents

2004 BUICK RANIER
110,000 MILES • V6 • 4WD • AUTOMATIC
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JAYNE BUCKLES COOK
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  • 1 POST
All of the sudden, there's no air flow from dash vents. Air flow from floor, windshield, and backseat air flow is good.
May 21, 2021 at 7:52 AM
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KASEKENNY
  • CERTIFIED EXPERT
  • 18,907 POSTS
if the air is not coming from the vents only then most likely we have an issue with the mode door actuator.

https://www.2carpros.com/articles/low-or-no-air-flow-from-vents

Below is the process from the manual that will show how to replace and re calibrate this actuator. Please let us know if you have other questions or how you work out. Thanks
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May 22, 2021 at 8:31 AM