Thursday, May 3, 2012

"Low Whining Noise Problems on 2007 Buick LaCrosse"

Black 2007 Buick LaCrosse

My 2007 Buick LaCrosse, 3.8L had a low whining noise at low speed, much like a noise of low power steering fluid. This noise started about three weeks ago. Since then I have replaced the serpentine belt. The noise got louder and increases with acceleration up to forty miles per hour. As far as I can tell the belt tensioner seems to be OK. The noise is constant. Can anybody help me?

Answer: Try listening under the hood with the engine running. Don’t get near any moving parts but try to locate the sound. I suspect a failing power steering pump.

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