Question about 2005 Buick Rainier

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High pitched whinning sound at cold start, but lessens after driving and outside air temp increases.

There.s a residual whinning noise after warm-up and driven around. Perhaps the power steering fluid thickens when cold?

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  • Carlos Campos Feb 13, 2012

    The Alternator and belt had been replaced about 3 months ago. It's a steady whine and lessens as the vehicle has een driven

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I would check the idler pulleys on the belt first. Then maybe the alternator. If your battery is getting a little weak it could be working the alternator hard when you first start it up. I don't know how loud it is though. The alternator wouldn't be real noticeable but some people would hear it.

Posted on Feb 12, 2012

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