1999 Chevy Lumina

1999 CHEVROLET LUMINA
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TOVEGERD
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  • 1 POST
Air Conditioning problem
1999 Chevy Lumina 6 cyl Two Wheel Drive Automatic 140,0. miles

WHEN I TURN ON THE AIR IT DOES NOT COME OUT OF THE VENTS
Apr 26, 2009 at 4:16 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
The direction of the air is actuated by doors in the HVAC system that run by vacuum. Chances are you have a vacuum leak under the dash or the supply hose from the engine to the switch is broken. Check for damaged or disconnected hoses. If you have the engine running, you may be able to hear a hissing sound.
May 8, 2009 at 6:22 AM
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