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Electric Motor Noise?

1109 Views 4 Replies 5 Participants Last post by  LS1POWERED, 
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Has anyone heard a noise that sounds like an electric motor after the engine is cut off. My wife has pointed out to me that there is a sound about five minutes after you cut the engine off. I stayed in the truck myself for a while after I turned the engine off and heard this sound. It sounds similar to the motor in the electric seats. It's not bothering me or anything. I'm just curious about what it is.
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K
I've heard this too.
My guess is that it's a motor that controls the heat/ac outputs. Mabye it uses vaccum, and it bleeds down to a point, then releases, then you hear the 'motor' sound.
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