IVE BEEN GETTING A KNOCKING SOUND FROM BEHIND ...

  • Tiny
  • ladyv527
  • 2006 Chevrolet Impala
  • 144,000 miles

I've been getting a knocking sound from behind the dashboard every time I change from ac to heat since last year. Now my heat doesn't work. Does the knocking sound have anything to do with it? What could be the problem?

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Thursday, November 22nd, 2012 AT 7:22 AM

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  • Tiny
  • renaudTN
  • Member

It could be related. It sounds like something is wrong with the blend door/blend door actuator.

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Tuesday, November 27th, 2012 AT 11:39 PM

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