Question about 1994 GMC Yukon

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Fuse is OK but air conditioner doesn't work '94 GMC Yukon.

When I turn my '94 GMC Yukon air conditioner on, it doesn't get cold, the AC clutch doesn't engage. There is no voltage at the two 2-wire connections leading to the AC. The light in the dash indicates the AC is on & the HTR-A/C fuse is OK. The AC probably needs charging. Could a low pressure switch be keeping the system from working or any other ideas would be helpful?

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Yes alow presure switch is likely on GM and it could be out of freon ,safe way to tell is to put a set of gauges on it and it will tell by passing the low side switch will just destroy the compressor if it is out of freon

Posted on Jun 28, 2009

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