Buzzing noise from the speaker above driver seat

[Marc_Rez]

So in my Yukon Denali I keep hearing a buzzing sound from that little speaker above my head. I'm not sure why it's doing this. Its it because that's where the sound from the Navi/Onstar would come from? Just wondering if other members ever had this issue. Thanks.

 

[groundscr8pr]

i dont believe that is a speaker.. i am pretty sure its for the auto climate and there is a fan in there.

 

[NathanJax]

Aspirator fan for the auto A/C...

It's dirty. You can take it apart and clean it or get a new one.

 

[Marc_Rez]

Wow didnt even know that. Do I just pop out the cover and get in there? Or is this something complicated? Thanks fellaz

 

[NathanJax]

You have to get behind it, but it's not hard. If I remember correctly, it's less than $40 new...

Subject: Buzz Noise From Headliner Above Driver - keywords ac air aspirator cover fan grille HVAC interior microphone sensor speaker temperature vent vibration



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Condition/Concern:
Dealer or customer may comment that they have a buzz or vibration noise emanating from the headliner in an area that looks like microphone or a speaker.

Recommendation/Instructions:
The plastic escutcheon grill, which is round and about the size of a half dollar and located just above the driver to the left, is the interior ambient temperature sensor. The sensor is used in conjunction with the automatic HVAC (C68). On occasions, this sensor has been known to make a buzz or rattle sound. The sensor uses a small fan to pull air over the sensor. This buzz noise may be intermittent.

Although it may not be possible to alleviate all of the buzz or noise from this sensor, Engineering has found that if the sensor is installed incorrectly that it may bind and cause the fan to make a buzz noise. Remove the sensor and while doing so check for any binding. Reinstall the sensor and re-test. If the noise is still present, the sensor itself may be noisy and require replacement.

 

[Marc_Rez]

You have to get behind it, but it's not hard. If I remember correctly, it's less than $40 new...

Thanks for this info! I went out and noticed that the cover was loose so I spun it clockwise and it seem to tightened and the buzzing stopped. Thanks again!

 

[NathanJax]

Thanks for this info! I went out and noticed that the cover was loose so I spun it clockwise and it seem to tightened and the buzzing stopped. Thanks again!

 

[Marc_Rez]

Hey since you and I have the same truck I guess I can ask you one more question. It there a way to make the doors automatically lock when I exit the vehicle? Instead of me pushing the lock button everytime? Thanks.

 

[Modded]

Hey since you and I have the same truck I guess I can ask you one more question. It there a way to make the doors automatically lock when I exit the vehicle? Instead of me pushing the lock button everytime? Thanks.

That is not possible!

 

[Marc_Rez]

That is not possible!

Noooooooooooooooooooooooooooooooooo!!!!!!!!!!!!!!!!!!!!!!


BTW, Nice Truck Man!