Question about 1991 Chevrolet Silverado 2500

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My air conditioner or heater no sure is clicking alot when i turn the heater on how do i fix it

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Lift the hood and watch AC compressor, you will probably see that engaging, and disengaging regularly when defrost is on. ( that is probably your clicking sound your hearing) The AC coming on while in defrost mode, is normal, as it aids in removing moisture, thus defrosts faster. If it appears to happen too often, you may be low on freon, otherwise, you can shut engine off, and remove connector at AC compressor, but be aware, it won't defrost as fast, or as efficiently. If you do remove that connector, I'd advise every once in a while to put it back on for a day or so, to keep the compressor from seizing up. The proper thing would be to have AC system checked first.

Posted on Nov 12, 2009

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