What is causing the clicking noise and is it expensive to fix?

Asked by klchuz Aug 03, 2015 at 11:32 AM about the 2008 Chevrolet Impala 1LT FWD

Question type: Maintenance & Repair

2008 chevy impala, air conditioner works good but it makes a clicking sound
that lasts for a minute or so after I shut off the car.

5 Answers
51,245

John answered 9 years ago

This may be the cooling of metals after the car is turned off and it is no longer producing heat. Heat expands metal, and it contracts as it cools. Engineers know this when they design and chose the metals to use in an engine. It could be the exhaust system also since a lot of aluminum is used, also the catalytic converter cooling will do this as will the brackets holding various parts. Open the hood of the car and bend over the fender or front and listen to isolate where the sound comes from.

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Cameron answered 6 years ago

Could be blend door module inside middle of dash

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Natasisntgay answered 6 years ago

I had this same problem on my fiances impala. My coworker stuck his head under the dash for a few minutes and fixed it right up. I have no clue what he did. But i know what you're talking about and thats where he was when he fixed it. I think it took him 5 minutes

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