Question about 2000 Chevrolet Silverado

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Airconditioner temperture cooling on and off

I have a 2000 Chevy Silverado ZZ1 wih a 5.3Litre and it has 125,000 miles.
Recently the ac temperature blows from a cool 58 degrees to then hot air (not heater air) while the ac is set on and in recirculating mode. When this accurs I turn the ac off for 2-3 minutes and then back on and wah-la cold air again until 3-4 minutes later it happens again. I have checked to assure the compressor belt is there (which it is) and checked the freon pressure which is also dead on. This seams to only happen during the day, unfortunitly for me when it is about 90 degrees. During the early morning and night it has yet to accur. Is this a relay, thermastat or switch issue or something more complex. Help me out, my window motor windings have also gone out and am in Florida. Get the picture....

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Be sure to check your vacum hoes sometime if there stop up they wont let the air circulate

Posted on Sep 24, 2008

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