Have ac sound - Mirage LF150 Subwoofer

Sounds like you have a low vacuum signal to the AC mode control switch.

Check clutch drive on AC compressor.

Sounds like its time for a new blower motor.

Raise hood and have one start engine, and then engage AC Listen and see where the sound is coming from. It may the belt slipping, or AC clutch. Good Luck

http://download.cnet.com/Realtek-AC-97-Driver-Windows-Vista-Windows-7/3000-2120_4-10962344.html
Realtek AC'97 audio driver package. The package includes: driver setup program, drivers for Vista/Windows 7 32-bit and 64-bit editions.
hope this helps

Update your embedded sound from Realtek to the latest AC'97 codec.
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers or you can download the drivers

Download the driver software by

http://download.cnet.com/Realtek-High-Definition-Audio-Codec-Windows-Vista-Windows-7-32-bit/3000-2120_4-10788600.html free sound drivers

http://download.cnet.com/Realtek-AC-97-Driver-Windows-98-Me-2000-XP-2003/3000-2120_4-10238712.html
Realtek AC

if you are referring to sound drivers
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers if you dont have a motherboard disc you will have to download the drivers

http://download.cnet.com/Realtek-AC-97-Driver-Windows-Vista-Windows-7/3000-2120_4-10962344.html
Realtek AC'97 audio driver package. The package includes: driver setup program, drivers for Vista/Windows 7 32-bit and 64-bit editions.
hope this helps

http://download.cnet.com/Realtek-AC-97-Driver-Windows-Vista-Windows-7/3000-2120_4-10962344.html
Update your embedded sound from Realtek to the latest AC'97 codec.
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers or you can download the drivers

Download the driver software by

http://download.cnet.com/Realtek-High-Definition-Audio-Codec-Windows-Vista-Windows-7-32-bit/3000-2120_4-10788600.html free sound drivers

http://download.cnet.com/Realtek-AC-97-Driver-Windows-98-Me-2000-XP-2003/3000-2120_4-10238712.html
Realtek AC

if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers if you dont have a motherboard disc you will have to download the drivers

http://download.cnet.com/Realtek-AC-97-Driver-Windows-Vista-Windows-7/3000-2120_4-10962344.html
Realtek AC'97 audio driver package. The package includes: driver setup program, drivers for Vista/Windows 7 32-bit and 64-bit editions.
hope this helps

http://download.cnet.com/Realtek-AC-97-Driver-Windows-Vista-Windows-7/3000-2120_4-10962344.html
Update your embedded sound from Realtek to the latest AC'97 codec.
if your computer came with a motherboard disc the sound drivers could be on it
click start control panel administrive tools computer management device manager scroll to sound,video and game controllers you might see a yellow question mark? Right click to reinstall drivers or you can download the drivers

Download the driver software by

http://download.cnet.com/Realtek-High-Definition-Audio-Codec-Windows-Vista-Windows-7-32-bit/3000-2120_4-10788600.html free sound drivers

http://download.cnet.com/Realtek-AC-97-Driver-Windows-98-Me-2000-XP-2003/3000-2120_4-10238712.html
Realtek AC

sounds like your ac bearing is going out, the Buick uses ac on defrost as well so it would probably be that, you can check by centralizing the sound with a short section of hose to listen for the sound

compressor problem ,is the most likely cause ask a local mechanic to have a look

The AC compressor shaft is riding on a electronic clutch pack.

When the pressure need to built up the clutch will LOCK and you will see the shaft start spinning.


Start the car and max out the ac. The clutch should lock up within 2 minutes.

Listen for a click sound from the clutch.


A badly damage clutch will lock up the belt!

You DO NOT want to be anywhere near the belt because it will snap.


An AC system should last 3--6 years.

NO using the ac compressor is a bad thing.


Let an AC guy to test the low side AC line pressure.


Good luck