Defrost vents only working

2010 CHEVROLET EXPRESS
94,264 MILES • 2WD • AUTOMATIC
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JRUDD94
  • MEMBER
  • 3 POSTS
A/C and heating only come out of defrost vents the dial still works just won’t move to main or floor vents.
Aug 30, 2019 at 8:22 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
The actuators are vacuum controlled. Check the tank under the hood and make sure the lines are hooked up. Check out the diagrams (Below). Let us know what happens and please upload pictures or videos of the problem.
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Aug 30, 2019 at 10:26 AM
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