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I have a 2000 deville northstar. In the morning when I start the car I get a loud humming sound and when I turn the stearing wheel left or right the noise get louder even a stand still and when I drive. As the car heats up during my daily drive to work the noise die down but never goes away completely. It allways get louder when I turn left or right. Any ideas what it could be. Thanks
 

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i work at autozone and lucas makes a product that is a synthetic lubricant for power steering pumps, it lubricates all the o rings, seals, gears lines, everything, just drain your old fluid, buy just some regular duralast or any brand power steering fluid and do a half and half mix of the lucas and the power steering fluid. it should quit it down completely.
 
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