Help trying to figure out chirping noise

Thank you Guys for providing some input and suggestions for the OP. Much appreciated.

Doubeleive said:

there really is not many things that will make that noise, main culprit is a blend door actuator not reading the position properly so it is always trying to adjust but cannot find the commanded spot so it moves back-n-forth a tiny bit chirping. might go fast or slow or work sometimes and not others. sometimes adjust the heat/cold, floor/forward/defrost to a different setting makes it stop but not always and it may even do it with just the key on.
so if pulling the fuse makes the noise go away then you have a lead point to investigate further.

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One thing I realized This past summer even though I had both temperatures set to 60 for the AC I was wondering why felt like I was getting a hotspot in the car the sun was shining on that side and then all of a sudden I realized hot air was blowing out of the passenger side. I had to pull over turn the car off I let it sit for a minute and then I turned it back on and the passenger side was cold again but I haven't had that problem since. If you're saying it's something with the blend door actuator I'm assuming that could very well have been a symptom that there is something wrong with it as well.

OR VietVet said:

You had the key off and out of ignition, or even in it, and it still makes the noise? Yea, like @Doubeleive said, something is still powered up and making that noise. I think it is an actuator, too.

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I had the key off and out of the ignition, when it was still making the noise I took it out of the ignition, but I still had that auxiliary power that stays on until you open one of the doors. I cannot recall if the noise was still there after everything powered off. I want to say that I did open the door and I was still getting the noise but when this initially happened it was back in March so I can't really recall and I haven't tried to recreate that since I posted about this because it started back up again.

Doubeleive said:

i think the 05 we had would do it even with the key off for a minute or so until it went to sleep, super annoying....

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Doubeleive said:

i think the 05 we had would do it even with the key off for a minute or so until it went to sleep, super annoying....

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Good to know. Thanks for the info. So basically what Doubeleive said is probably corporate more than likely is. Looks like I'll be looking into buying a replacement part hopefully it's not that complicated to get to it and replace it. Haven't looked into it just came on to the forum now to see if anybody else provided help. Wanted to say thank you to everybody who did provide me with some information on tracking down that noise because it can become irritating as all hell when it really starts going especially while I'm driving. When I get around to it if it goes away I will be sure to post in here that that was the fix.

Here's an out-of-the-box idea - check your parking brake pads. I had a chirping/clicking noise coming from down under - chirping when the windows were down, clicking with the windows up. Turned out my parking brake pads had completely disintegrated, coming off the backing metal. One side fell out as soon as we pulled the drum.New parking brake pads and everything is now fine.

Just my limited experience...

Grandson has an 04 Silverado that makes a noise similar to this I think. Might be a similar system as yours. We found that we could move the heat control just a bit toward the warm setting and it would quiet down. Probably not your noise but easy to try it.

I can't hear it.... volume up - no sound....

mountie said:

I can't hear it.... volume up - no sound....

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Have to unmute

Fless said:

Have to unmute

View attachment 440471

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Thanks..... ( usually, raising volume , un mutes ).... I barely hear the 'chirp'. Not really enough to diagnose.....

bobsburban said:

Here's an out-of-the-box idea - check your parking brake pads. I had a chirping/clicking noise coming from down under - chirping when the windows were down, clicking with the windows up. Turned out my parking brake pads had completely disintegrated, coming off the backing metal. One side fell out as soon as we pulled the drum.New parking brake pads and everything is now fine.

Just my limited experience...

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It's definitely not that. I know my brakes are good Just change the rear rotors and pads a few months ago and I checked the front while I was doing it and they were still good. I can get that noise to happen as was mentioned previously when I'm sitting with or without the key in the ignition when it's running off the auxiliary power before you open the doors.