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Normal. Vehicle leveling syatem.

I just purchased a 98 STS and have heard that same noise.. Happens when the key is first turned on, but continues once car is started. I tracked it down, atleast my noise. Next to the headlight switch there is a really small vent, I am guessing it is for climate control. I put my hand right in front of it and can feel air being sucked in. It sounds like the bearing is shot in mine, it gets quiet after a min or so but can still hear it.

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Q: Why would 1996 Cad SLS when you turn the key on have a noise like a small moter running this is before you even start the car what could this be There is a slight vibration on automatic trans gear?
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