2003 Chevy Astro Defrost only

2003 CHEVROLET ASTRO
69,000 MILES • 6 CYL • AWD • AUTOMATIC
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TJWRIGHT
  • MEMBER
  • 1 POST
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.
Dec 7, 2009 at 4:30 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 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
Dec 20, 2009 at 11:55 PM
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