What is the fan noise from?
03-03-2018, 10:21 AM
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What is the fan noise from?
When I have the ignition on engine off I can hear a fan spinning up and changing speed from what sounds like inside the cab, is it the PCM or something? Anyone else notice this? I did some searches, but just got stuff on the cooling fans.
03-03-2018, 10:51 PM
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Possibly, the strange thing is that it seems to turn on with the HVAC system on or off. It sounds like a computer fan, not so much a blower fan, and it sounds like it is coming from under my seat.
09-26-2018, 11:37 AM
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Just to answer the question, I eventually figured out the PO installed the amp for the subs under the driver seat. It is actively cooled (the fan noise). I thought the amp was in the sub box until I went hunting for it.
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