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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

ac not cold

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Old June 1st, 2018, 3:09 PM
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Default ac not cold
2005 chevy Tahoe 53.liter
ac works ok . after 20 minutes warm air . shut off engine and restart ac again blows cold air.
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Old June 1st, 2018, 3:22 PM
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Is the compressor clutch staying engaged?
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Old June 2nd, 2018, 4:30 PM
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at the 20min mark when it goes warm....rev the engine up to 2500rpm and hold it there for 1 min....if the cold air returns at the high rrm....the compressor is tired.
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