Blend Door Actuator issues?

Tiny
RSCHMAUCH82
  • MEMBER
  • 2010 CHEVROLET IMPALA
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 80,000 MILES
Hello there. I‘ve recently been having issues with at least two blend door actuators clicking on my car listed above LT model. What would happen Is you would open the car door and one of the actuators would make a light clicking noise. Then another actuator would make a very loud clicking noise. I would start the car to drive and after about 30 seconds, the clicking would disappear.

One of the actuators was replaced a few months ago, but I feel that it’s the one making the light clicking noise. I don’t know if things have to be calibrated or not. I read many different methods. I have no scan tool. It’s so confusing with which method really works for a 2010. I’d appreciate any kind of help for this annoying issue.
Sunday, June 25th, 2023 AT 11:53 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 44,395 POSTS
The clicking nose is a sign the blend door actuator is bad; it stops because the system shuts down once it can't move the actuator. Here are the locations of the actuator so you can check out which ones are bad and replace them. Here is how to recalibrate the actuators as well. Check out the images (below). Please let us know what happens.
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Sunday, June 25th, 2023 AT 4:03 PM
Tiny
RSCHMAUCH82
  • MEMBER
  • 3 POSTS
I don’t have that type of scan tool for calibrating.
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Sunday, June 25th, 2023 AT 5:03 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 44,395 POSTS
I think you can just leave the key on for one minute without starting the engine, it should work.
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Sunday, June 25th, 2023 AT 6:07 PM

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