Question about 2006 Chevrolet Cobalt

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My 2006 chevy cobalt is making a loud buzz when in park and ac is on

A loud buzzing noise comes on when ac is on low and vehicle is on in park when u shut ac off it is like a fan keeps spinning loud

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  • Chevrolet Master
  • 2,620 Answers

Anytime the a/c is turned on the cooling fan will come on so that the engine does'nt over heat.It will not turn off until the ebgine has colled down.

Posted on Nov 03, 2012

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Posted on Jan 02, 2017

awcforever
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SOURCE: Front end Chevy cobalt loud squeak?!

If you have the time, take the vehicle to an autoshop of your choice, and ask them to grease all fittings on the front end. My car did the exact same thing, it was the ball joints. You may need a new ball joint, but being a 2009, I highly doubt it unless its been in an accident or something. There are grease fittings on the front, I believe there should be at least 5, maybe more, but the sound you are experiencing is the equivalant to a pogo stick if I'm correct. Hope that helps.

Posted on Mar 13, 2009

countrysi248
  • 443 Answers

SOURCE: grinding noise front end

its either your front brake pads or your CV joint is going bad .. Jerry

Posted on May 13, 2009

GM Elec
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SOURCE: 2000 Chevy Malibu making knocking sound when AC is on

Is it noisy with only the blower fan on or does the A/C have to be on to get the noise.
Try using the heater only and see if the noise is present.
Let me know.
Regards,

Posted on Jun 19, 2009

adve1958
  • 246 Answers

SOURCE: 2006 Chevy Cobalt cuts off if ac is running

this may be a compresor issue,when the car is normal(a/c off) the compressor is not draging the engine,how ever when on if the compressor is goin bad(seizing) will turn your engine off and the belt will drag. have you compressor checked and also see if the system is over charged.

Posted on Sep 10, 2009

  • 474 Answers

SOURCE: Cooling Fan Spinning Fast On A Cold Start

most fans are clutch fans and they work or are engaged by temp.most all will spin under really cold conditions.this is normal.but to be sure, with the motor off and key in your pocket grab the fan and see if it wiggles or has any slop. if not alls good

Posted on Dec 20, 2009

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The e t c is buzzing what is causing this


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Loud buzzing noise


From the sounds of it, it's simply your air ride's compressor. If you're not aware that your vehicle has air ride suspension, read up on the user's manual or look on the web. When you start your vehicle and shift into drive or reverse, your compressor should start (assuming no doors are ajar). The compressor than fills all four airbags in your vehicle to a factory-set height. These airbags provide a softer ride than the conventional shock/strut system seen in less expensive SUV's and trucks but are also more prone to problems and damage down the line. You can isolate the compressor as the sound by going to your truck, removing the left hand side panel and switching your air ride off. Your car's compressor then should not kick in at all. However, you should not operate your vehicle with this switch turned off. You should only use it as a diagnostic reference or anytime your car is towed, hoisted, or jacked up. Hope this helps.

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