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Q: a/c problem on 1999 GMC Sierra 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
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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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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