Question about 2002 Chevrolet TrailBlazer

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02 Chevy TB LS

I have a chevy TB LS and the problem I have is that when I turn on the car and the airconditioner the car will make this huge loud noise like a semi truck or even louder for like the first 3 or 4 mins then most of the times the noise fades out after that but sometimes it doesnt. Does anyone know why this is? Just needs some coolant maybe? It still blows cold air fine and stuff but the noise for the first 5 mins or so after you first turn it on is horrible!


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There is a lubricant that is added along with the refrigerant when an AC system is charged. The noise you hear might be the compressor starving for oil.

Posted on Jun 20, 2009


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