2000 Chevy Lumina Airflow selector will not change

2000 CHEVROLET LUMINA
142,000 MILES • 6 CYL • FWD • AUTOMATIC
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CRW_2000
  • MEMBER
  • 3 POSTS
My A/C only blows out of the defrost and floor vents no matter which setting I use; it will not switch directions. This started out as an intermittent problem, but has gotten progressively worse.

I have read that this is commonly caused by a bad vacuum hose. Could someone tell me where this particular vacuum hose would be located on my car? It is a 3.1L v6 by the way.

Thanks.
Jun 25, 2009 at 10:19 AM
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2CARPRO JACK
  • ✓Experienced Mechanic
  • 11,533 POSTS
The source vacuum usually comes through the firewall near the passenger side.It is a small black plastic line and should attach to the intake manifold.You may need a bright flashlight to look around for it.
Jun 26, 2009 at 12:32 AM
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