1999 Chevy Astro test

Tiny
BILL TIPTON
  • MEMBER
  • 1999 CHEVROLET ASTRO
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 98,400 MILES
How do I check the heater/air conditioner switch which controls what position the air flow doors is in?
Thursday, May 13th, 2010 AT 4:31 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Basically you supply vacuum to the input. From there, you switch it and the direction of the vacuum should change. What is happening to the car making you think the switch is bad?
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Wednesday, June 2nd, 2010 AT 10:43 AM

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