Getting a loud clicking sound from my air vents?

2007 CHEVROLET MONTE CARLO
102,000 MILES
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Getting a loud clicking sound from my air vents and stays on even when I turn the key off. Later when I go to my car sometimes it won't start and is dead, but the battery has full charge. Later it may start fine, or maybe not.
Jan 9, 2013 at 12:22 AM
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HOMER1967
  • ASE Certified Mechanic
  • 875 POSTS
  • ASE Certified Mechanic
you have a blend door actuator issue.these can be very difficult to access and there are anywhere from 2- 4 of them.i would have to suggest that you would take it to a shop, because you need specific tools and specific information and skills to be able to determine when actuator is the problem and to remove and replace it.
Jan 9, 2013 at 12:52 AM
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