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Clicking noise under the dash on the passenger side?

Tiny
THOMAS J JONAS
  • MEMBER
  • 1993 CHEVROLET TRUCK
  • 232,000 MILES
I hear a clicking noise under my dash on the passenger side of my truck inside the cab. I tried switching all my ac/heater controls but no such luck I think it might be an actuator but don't really know. How many are there under the dash? Thanks
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Sunday, March 5th, 2023 AT 5:09 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
It does sound like an HVAC actuator is causing the issue which will continue until it is replaced. Here is a guide to help explain what's going on with instructions for your truck in the images below. To pinpoint the actuator that has failed put your hand on it and you should be able to feel the unit clicking internally.

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the images (below). Please let us know what you find.
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Sunday, March 5th, 2023 AT 6:19 PM

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