Thread: 91 gmc serria a/c compressor won't come on
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Old 08-18-2009, 08:36 PM   #2
2000CAYukon
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Re: 91 gmc serria a/c compressor won't come on
If the pressure cycling switch (at the accumulator) is bad or you are really low on refrigerant, you won't see any power at the compressor.

Try jumpering the pressure cycling switch and then check for voltage at the compressor.

//2000CAYukon
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