Mircophones in roof of Denali making a Humming noise

[treehan77]

Junk yard

 

[Doubeleive]

does anyone know where to get one of the little round covers? I fixed mine by cleaning but the little cover has always been missing since I bought the truck

there is a used aspirator on ebay it has the cover on it $20
https://www.ebay.com/itm/2003-2006-...722219?hash=item34182a42eb:g:~wQAAOSwafJdyBpZ

 

[delmaracer]

They're not microphones, they're small fans that have something to do with the climate control system.

My 2005 has a very similar noise from the round thingy over & to the left side of the drivers head. It kinda sounds like a small fan to me. But how do ya get access to that item? Is there some schematic for it?

 

[MassHoe04]

My 2005 has a very similar noise from the round thingy over & to the left side of the drivers head. It kinda sounds like a small fan to me. But how do ya get access to that item? Is there some schematic for it?

I believe that pops out of the headliner if gently pried out. There are a couple of retention clips molded into the plastic holding in the headliner panel. The sensor should snap out of/into the the face plate.

I didn't watch, but here is a YouTube on it...

I have heard they can make that noise after sucking in dirt and dust over the years. I saw a post somewhere, where a can of compressed gas (a can of computer/electronics duster things) was used to blow some crud out to solve the issue.

Mine makes a slight buzz once in a while, but I have not found the urge to pay $50 for a new one. I live the the occasional noise.