1996 Chevy Astro blower

1996 CHEVROLET ASTRO
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BROKENRIDE
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  • 1 POST
Heater problem
1996 Chevy Astro 6 cyl Two Wheel Drive Automatic

I have a 96 astro i just bought, I played w/ everything when i test drove 2 make sure it worked & it did. Now the heat/blower only blows from defrost vent no matter wich setting you select. whats wrong?
Nov 18, 2009 at 7:37 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Welcome to the forum, if your directional doors under the dash are vacuum controlled and you loose vacuum, it will default to defrost. Check the vacuum source.
Nov 18, 2009 at 8:02 AM
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