Knocking Noise

Asked by Guru9S6XT Jun 30, 2017 at 02:28 PM about the 2007 Chevrolet Impala 3.5L LT FWD

Question type: Maintenance & Repair

What is causing a knocking in my dashboard
of my 2007 Chevrolet Impala, and what
needs to be done to fix this problem?

3 Answers
430

DrSTA answered 7 years ago

if the noise is happening when you turn your temperature from hot to cold or cold to hot that would be your blend door actuator

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60

Guru5848P answered 6 years ago

It’s the blend door actuator servo. The plastic gears inside are stripped out. No big deal. Remove the glove box to access it. Unbolts with two bolts, unplug wire is all there is to it. If you don’t want to replace it just yet simply unplug the wire and the tapping will stop but of course the fresh air intake door won’t work.

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30

Guru9FP5W3 answered about a year ago

how to fix clicking noise in chevy impala 2012 driver side

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