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Delphi SAE J639 / GMC Sierra 1500 inquiry

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  • Delphi SAE J639 / GMC Sierra 1500 inquiry

    Delphi compressor on a 96 GMC Sierra 1500. I have a 1996 GMC Sierra 1500 4.3L V6 A/T (std cab), that my wife received from her uncle's estate. Sometime before he passed away, he had mentioned to her that the A/C "just stopped working one day". I am preparing to set about debugging the problem and I've come here to ask some questions regarding the compressor on the system. After wiping away the dirt on the label, I find that it's a Delphi SAE J639, however the "Part" potion of the label is not completely readable. It appears to be: (something) 587 or (something) 527. On the rear of the compressor, there is a circular 2-pin electrical connector which currently does have a 2-pin female connector wire attached to it. Delphi's web site says that their model CS0120 is the proper compressor for this model vehicle. However, the Delphi CS0120 has no such 2-pin circular electrical connector fitting on the rear of the compressor. We do not know if the current A/C system was a factory-installed system or a 3rd-party aftermarket installation. All I know at this point is that the electrical clutch will not engage, so for all I know right now, the compressor itself may or may not be serviceable. I was just trying to run down available parts and prices in case I may need them as I get further into the process of diagnosing the system. Any information you might have on a suitable potential compressor replacement would be greatly appreciated. Many thanks in advance.