Question about 1991 GMC Sierra

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I have a 91 gmc sierra truck, its two wheel drive v6 4.2 engine i think. when you accellerate from a stop you hear a whine but after it gets going its not there anymore, what is causing that?

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Depending on the wine itself ; you may be able to hear weather it is coming form a front belt or a slipping in the transmission. I would check all fluids and go from their. Sometimes the idler pulley will make the same sound if the belt is worn beyond limit .But usually it will tick if the bearing isn't worn..............Hope this helps.

Posted on Apr 05, 2011

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