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2018 GMC Sierra, 1995 Jeep Wrangler
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......making a new noise. It sounds a little like an air compressor or a buzzing noise. When I place my hand over this plastic grate it is obviously quieter. Any opinions on what the cause of the noise is coming from the grate? Mind you this is an 03 Lade, but this noise is new in the past week.

After doing a brief search I found someone who suggested this was the ambient air sensor!? Strangely the noise level seems to vary when I turn the steering wheel. I'm baffled.....help?! :eek:
 

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Now: 2008 STS-V, 1960 Eldorado Brougham Then: 2002 Escalade
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My mic for Onstar is attached the center overhead console where the sunroof controls are. I'm pretty sure that it is the air temp sensor, although it could have changed from 02-03.
 

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03 Escalade, 06 SRX
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slk230mb said:
My mic for Onstar is attached the center overhead console where the sunroof controls are. I'm pretty sure that it is the air temp sensor, although it could have changed from 02-03.
I am checking now. I may be wrong. :thepan:
 

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I have a '05 ESV and my dealership told me that the small grill above the driver's head is a temperature sensor. Mine started making a noise similar to radio static the first week after we bought it. We had the dealer replace the sensor (which they admitted to be a common problem). After the repair, the noise was gone. In the last week or so, the problem is back.:mad2: It is annoying to say the least.
 

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2002 Escalade, 2004 Cts-V, 2006 Hummer H3
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i thought it was another mic/speaker thingy for onstar... upon looking in my truck the black thing up by the sunroof button is the mic... so i'd guess a tempture sensor also... looks like a speaker grill... but that'd make no sense
 

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2005 White Diamond EXT
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I think it is the speaker for the stereo. If you notice the AUTO EQ button on your stereo, you can select DRIVER. I think it is just a speaker for this purpose.
 

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1989 Fleetwood FWD / 2000 ETC / 2000 STS / 2006 STS V-8 1SF RWD
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Hello...
The noise that you're hearing is coming from the "aspirator."
This is the internal ambient temperature sensor.
It is really a small fan that inducts cabin air to obtain current temperature.
During colder weather, the fan can be louder than usual.
You have 2 choices:
-wait till the cabin temp warms enough for the fan to quiet itself; or
-remove/replace the "aspirator"

Post back your solution.
 

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Rolex said:
......making a new noise. It sounds a little like an air compressor or a buzzing noise. When I place my hand over this plastic grate it is obviously quieter. Any opinions on what the cause of the noise is coming from the grate? Mind you this is an 03 Lade, but this noise is new in the past week.

After doing a brief search I found someone who suggested this was the ambient air sensor!? Strangely the noise level seems to vary when I turn the steering wheel. I'm baffled.....help?! :eek:
It is the ambent air sensor. LOL the Mic is next to the rear ac controles up front. I know it is because I had mine replaced two months ago. Sam exact sounds.
 

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v10king said:
It is the ambent air sensor. LOL the Mic is next to the rear ac controles up front. I know it is because I had mine replaced two months ago. Sam exact sounds.
is the mic that black thing on the right side of the rear AC controls? being wondering what was that
 

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2018 GMC Sierra, 1995 Jeep Wrangler
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Discussion Starter #13
I listened closely yesterday and it distinctly sounds like a fan noise. I believe I'll let the dealership have a listen. It's too annoying not to fix or replace. Thanks for all the help! :D
 
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