My air conditioner works very well but all of a sudden it blows out hot air. I put in park and turn key off and turn start key back on on cold air is back on. What is causing this?
What makes this problem better or worse?
Turn key off and then on
How long has your 2004 Chevrolet Silverado 2500 HD had this problem?
Started last summer and did it twice. Just today this summer it happed twice
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