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2003 Chevy Astro Defrost only

Tiny
TJWRIGHT
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 69,000 MILES
I have 2003 Chevy Astro Van, I can not get air (hot/cold) to blow out the dash or on to the floor.
The blower is working. I don't think that the AC is worker, due to the same problom.
Monday, December 7th, 2009 AT 12:30 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
What you are looking for here is a vacuum leak. The vent doors are actuated by vacuum. If there is a leak, it defaults to the defroster. Check under the dash and under the hood for leaks. With the engine running, you may actually hear a hissing sound where the leak is located.

Let me know if you have other questions, and thanks for using 2carpros. Com.

Joe
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Monday, December 21st, 2009 AT 7:55 AM

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