A/C blower fan fluctuated back and forth from top vents to floor vents

2001 CHEVROLET LUMINA
174,000 MILES • 3.6L • 6 CYL • AUTOMATIC
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KAREN KLECKNER
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  • 1 POST
Okay, I just had the fan and resister replaced, now the fan fluctuates on its own from top vents to floor vents. It also changes when I am driving uphill.
Sep 21, 2019 at 9:00 AM
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SCGRANTURISMO
  • CERTIFIED EXPERT
  • 4,897 POSTS
Hello,

This sounds like you could have a problem with your vehicle's blend door actuator. These are little plastic motors that control the doors that make your vehicle's Heating, Ventilation, and Air Conditioning (HVAC) work properly. Here is a link below explaining about replacing them:

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
Sep 21, 2019 at 9:53 AM