2001 Chevrolet S-10 defroster

2001 CHEVROLET S-10
130,000 MILES
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JOHNGRETT
  • MEMBER
  • 1 POST
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?
Sep 10, 2013 at 3:35 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 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.
Sep 10, 2013 at 4:58 AM
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