Defrost vent issue

1999 BUICK PARK AVENUE
169,000 MILES • 3.4L • 2WD • AUTOMATIC
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SSTACK2291
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  • 1 POST
I noticed I got a small amount of air coming from the windshield vent but nothing compared to what comes out of the mid range and lower vents. This has caused issues with lack of being able to defrost the windshield. What's best course of action to fix this?
Aug 3, 2019 at 4:43 PM
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SCGRANTURISMO
  • CERTIFIED EXPERT
  • 4,897 POSTS
Hello,

This sounds like you could have a blend door actuator problem on your vehicle. The blend door actuator is a small electric plastic motor that move the blend door which sits on your vehicle's Heating Ventilation and Air Conditioning (HVAC) Box and directs the air to the proper vent. Here is a link for you to go to down below:

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

Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
Aug 3, 2019 at 5:10 PM