Question about 1999 GMC Yukon
It might be the tensioner. This is a fairly common problem. Locate the tensioner, usually located towards the top of the motor. Try to spray some lubricant inside the tensioner. Look for a spot on the back of it where there is an opening. If this doesn't work, then you might have to replace it.
Posted on May 21, 2011
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Posted on Jan 02, 2017
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