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2001 Chevrolet S-10 defroster

Tiny
JOHNGRETT
  • MEMBER
  • 2001 CHEVROLET S-10
  • 130,000 MILES
Air only comes out of vents when selected either heater or defrost unless you manually close vents then you get alittle know control head has vacuum because max a/c works after I fixed leak at T near drivers front fender blend door also works can defroster door be opened manually or is the control head?
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Tuesday, September 10th, 2013 AT 10:35 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
Don't assume that just because the recirc door works that you have sufficient vacuum. I would actually put a vacuum gauge on it and compare the reading with direct manifold vacuum. I would also check to determine if the defrost actuator is actually capable of holding vacuum.
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Tuesday, September 10th, 2013 AT 11:58 AM

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