Blower motor only blows through dash vents?

Tiny
BIGMOOSE52
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 107,400 MILES
My blower motor only blows through dash vents, when I turn on defroster setting. What needs to be fixed?
Monday, September 8th, 2008 AT 3:20 PM

4 Replies

Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
Is it automatic temp controls or manual
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Monday, September 8th, 2008 AT 3:28 PM
Tiny
BIGMOOSE52
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  • 3 POSTS
Manual controls
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Monday, September 8th, 2008 AT 3:36 PM
Tiny
PURPLE2462
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No answer
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Friday, February 14th, 2025 AT 4:15 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
This happens when there is a vacuum leak under the hood for the HVAC supply.

Here is a guide to help you fix it:

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Let us know if you need anything else.

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Saturday, February 15th, 2025 AT 10:31 AM

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