'01 tahoe "speaker" on headliner ?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

swb85 · 03-16-2011, 09:30 AM

Ok what is the small round "speaker" in the headliner above the driver's head for? Mine makes a fairly loud growling sound as soon as you turn the ignition key to "on" and doesn't stop until you turn the key "off", no other sounds come from it. Is it part of Onstar? Anybody else experience this? How do I make this thing shut up?

4x4toy · 03-16-2011, 08:47 PM

It is the temp sensor for the automatic climate control. If it is noisey it needs replaced. It has a small fan in it to sample the cabin air temp.

swb85 · 03-17-2011, 08:27 AM

Fantastic! I had no idea what that thing was, thanks! In case someone in the future searches and finds this, I did some research and the GM part number is 25771194 and it's called an aspirator....$30 part through gmpartsdirect.com.

biggsteve97 · 03-17-2011, 01:38 PM

Thanks for the info. Ive got an 03 Z71 Tahoe and both the one above the drivers head and the one above where the third row seat would be buzz real loud first thing after start up. I thought it was part of OnStar as well and was going to remove them completely since I do not use OnStar.

03-16-2011, 09:30 AM	#1
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	'01 tahoe "speaker" on headliner ?? Ok what is the small round "speaker" in the headliner above the driver's head for? Mine makes a fairly loud growling sound as soon as you turn the ignition key to "on" and doesn't stop until you turn the key "off", no other sounds come from it. Is it part of Onstar? Anybody else experience this? How do I make this thing shut up? __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

03-16-2011, 08:47 PM	#2
4x4toy Registered User Join Date: Jan 2009 Location: Southern Md Posts: 228	Re: '01 tahoe "speaker" on headliner ?? It is the temp sensor for the automatic climate control. If it is noisey it needs replaced. It has a small fan in it to sample the cabin air temp. __________________ 04 Yukon XL 2500 w/ Quadrasteer 61 Chevy C60, 261 inline six 86 Chevy C20 2wd, Banks 6.2 05 GMC Sierra 2500hd Duramax

03-17-2011, 08:27 AM	#3
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: '01 tahoe "speaker" on headliner ?? Fantastic! I had no idea what that thing was, thanks! In case someone in the future searches and finds this, I did some research and the GM part number is 25771194 and it's called an aspirator....$30 part through gmpartsdirect.com. __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

03-17-2011, 01:38 PM	#4
biggsteve97 Registered User Join Date: Jan 2010 Location: Kansas City, Mo Posts: 284	Re: '01 tahoe "speaker" on headliner ?? Thanks for the info. Ive got an 03 Z71 Tahoe and both the one above the drivers head and the one above where the third row seat would be buzz real loud first thing after start up. I thought it was part of OnStar as well and was going to remove them completely since I do not use OnStar.

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