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1999 GMC Sierra 1500 Question: a/c problem



joymullins, 4.8L V8, Plaquemine, LA, February 22, 2011, 16:21

the clutch on my a/c clicks off intermittently when I turn on the a/c. It will not run long enought for the compressor to come on. What is the problem?

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  • Answer #1

    February 22, 2011, 19:02

    You may have a faulty pressure cycling switch, located on the a/c accumulator of your 1999 GMC Sierra 1500. If you tap lightly on the pressure switch with a screwdriver handle and the compressor turns on, replace the switch.

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