and the fans come on with the heat on and the RPM's pick up on the fans when it's set to heat the defrost, what could be the problem?
If your talking about the engine cooling fans that sounds normal to me, most vehicles today turn on the A/C compressor when you make a selection other than heat on the floor, they do this to help with the fogging of the windows as the A/C dries the air. Hope this answers your question.
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