Question about 2003 GMC Yukon Denali

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Noise under hood when i turn on air conditioning

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  • Cousin_Jon May 11, 2010

    What does it sound like.

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Compressor or compressor clutch

Posted on Jul 30, 2009

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Posted on Jan 02, 2017

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1 Answer

2004 ford expolorer air conditioning will not stay on


I would suspect the AC compressor cycling switch (located in low pressure line from compressor) or a AC cutoff wide open throttle relay ( in under hood fuse and relay center) would be causing this problem.

Jul 24, 2012 | 2004 Ford Explorer

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Started engine, heard a grinding noise & smoke


Sounds like one of the accessory pulleys locked up and smoked the serpentine belt. The air conditioning pump would be my first suspect, but grab all the pulleys and turn them. The problem pulley will probably be discolored, and have belt residue on or near it.

Sep 03, 2011 | 2001 Dodge Ram 2500 Truck

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I have a 2001 Cavalier Coupe, I am having problems with the air condition. Freon was added, that evening the air condition started to work. The next day, I turned on the air condition, no cold air. I was...


There is a power distrobution box under the hood containing relays and a few heavy duty fuses.
I'd take the cover off and find the A/C relay usually depicted in the diagram inside the cover.
Start the car, turn the A/C switch on and then under hood at A/C relay give it a light tap with the handle of a screwdriver to see if compressor clutch on compressor "kicks on".
Relay can even be pulled out and put back in to make a better connection.
I'm betting the problem is that relay...or dirty contacts.

Hope this helps...

Aug 07, 2011 | 2001 Chevrolet Cavalier

1 Answer

Very loud clanging noises started while driving


Try to remove the belt for the ac and see if you still hear the noise, as it sounds like you may have blown the seal or bearing out of the ac compressor , not sure just a guess.

Mar 13, 2017 | 1984 Chevrolet Corvette

1 Answer

High dinging or ringing noise Under hood


if it goes away when you turn the a/c on its the a/c clutch plate that is dragging and when you turn it on its pulled into the the a/c compressor and is turning all the time that's why noise goes away,you have to replace the a/c clutch.sometimes you can try prying with a screwdriver the edge that is dragging and noise will go away.

Jan 29, 2010 | 1999 Oldsmobile Intrigue

2 Answers

My air conditioning unit only blows hot air


I believe you have a leak in your AC system. You will need to do a leak test, stop the leak and refill your system with refrigerant. You can buy the items to do this repair at most automotive stores. (you may not have a leak, you might just have to recharge the system with new refrigerant)

Jun 29, 2009 | 1999 Dodge Intrepid

1 Answer

Grinding noise under hood when a/c turns off...


I would put a new compressor clutch on..but that requires some skill...you need air conditioning tools.

May 28, 2009 | 2000 Oldsmobile Intrigue

1 Answer

Ac on---grinding noise under hood


AC compressor clutch slippage. won't last much longer- relpace.

May 27, 2009 | 2000 Oldsmobile Intrigue

1 Answer

Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.

1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning


Aug 09, 2008 | Mercedes-Benz 400-Class Cars & Trucks

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