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05 yukon intermitte ac shuts off
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greasebme
New User
Apr 30, 2013, 7:00 PM
Post #1 of 6
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05 yukon intermitte ac shuts off
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I have a 2005 Yukon with dual climate automatic control works great and all of a sudden the ac clutch dis engadges checked pressures and everything is ok checked the high side pressure switch have 5-volt ref but checked the ground wire from connector to battery neg showed 13.6 ohms seams way to high noticed that the ground goes to the pcm and the signal wire shows 1.064 at static pressure with engine running the spec are .8-1.00 volts could this be causeing the problem. please help
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 30, 2013, 7:23 PM
Post #2 of 6
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Re: 05 yukon intermitte ac shuts off
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That's not how you approach this. You simply use a scan tool and look at the pressure that the computer is seeing. You can measure the return voltage of the sensor but you would need a chart to cross that to pressure. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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greasebme
New User
Apr 30, 2013, 7:29 PM
Post #3 of 6
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Re: 05 yukon intermitte ac shuts off
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ok will take a look via scan tool data before this problem I had a very randomly the passenger side vents would be cold and the driver hot can the two problems be related or maybe a sign of two problems
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 30, 2013, 7:31 PM
Post #4 of 6
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Re: 05 yukon intermitte ac shuts off
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That's an indication of low refrigerant if that truck doesn't have separate left and right temp controls. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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greasebme
New User
Apr 30, 2013, 7:36 PM
Post #5 of 6
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Re: 05 yukon intermitte ac shuts off
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yes have dual climate controls and the level is ok
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Hammer Time
Ultimate Carjunky
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May 1, 2013, 3:03 AM
Post #6 of 6
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Re: 05 yukon intermitte ac shuts off
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You don't know the level is OK. You can't know that without a complete evacuate and recharge with a weighed charge. With individual temp controls you can also have a problem with the individual blend door actuators. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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