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What is the easiest way to change the inlet air actuator?

Tiny
THOMAS J JONAS
  • MEMBER
  • 1993 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 232,000 MILES
Which is located on the fire wall on the passenger side of the truck. Do you have to pull off the whole dashboard to change it? I keep hearing a clicking noise around that area, do I have to pull out the HVAC system too? I changed the actuator that is in the front middle of the dash but I still have the same clicking noise. Thanks
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Saturday, March 18th, 2023 AT 2:41 PM

7 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
They can be difficult to change depending on which one needs to be replaced, when the clicking noise is occurring, see if you can feel which one is making the noise. You can remove the glovebox to help gain access and I have all of the actuator locations in the images below. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Sunday, March 19th, 2023 AT 12:29 PM
Tiny
THOMAS J JONAS
  • MEMBER
  • 10 POSTS
It's the actuator that's on the firewall of course how do you change this one without a lot of work? I don't feel anything on the other two actuators. Thanks
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Sunday, March 19th, 2023 AT 12:35 PM
Tiny
THOMAS J JONAS
  • MEMBER
  • 10 POSTS
I only hear the clicking noise after I've been driving awhile not when I first start the truck I tried all controls to hear the noise but no such luck.
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Sunday, March 19th, 2023 AT 12:38 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Yep, some actuators are in a bad spot and will take some effort to change it. It is common for the actuator to click at different times, can you please turn the HVAC system off to see if you still hear the noise?
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Monday, March 20th, 2023 AT 11:22 AM
Tiny
THOMAS J JONAS
  • MEMBER
  • 10 POSTS
I hear the noise with the A/C on or off. Sir, do I have to pull out the HVAC too to change that actuator? Thanks
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Monday, March 20th, 2023 AT 11:35 AM
Tiny
THOMAS J JONAS
  • MEMBER
  • 10 POSTS
I only hear the noise when I'm driving not when I start it up.
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Monday, March 20th, 2023 AT 11:36 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
The noise might not be an actuator, can you shoot a short video of the noise and upload it with your response please?
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Monday, March 20th, 2023 AT 5:49 PM

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