sepentine belt

1999 GMC SUBURBAN
133 MILES • V8 • 4WD • AUTOMATIC
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DAVECINCY
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  • 13 POSTS
how to change a serpentine belt on 1999 GMC suburban
Nov 14, 2010 at 9:14 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
There should be a belt tensioner. Once you release tension, you take belt off pulley. The tensioner may have a square cutout, for a rachet drive or breaker-over.
Nov 14, 2010 at 9:26 AM
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DAVECINCY
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The tensioner has a nut in the center. do I loosen the nut? It looks like the nut holds the tension on
Nov 14, 2010 at 9:52 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Sorry for the late reply, if there is a cut-out in the tensioner arm, view diagram, use the cut-out with rachet drive, maybe a 1/2 inch drive?
Dec 28, 2010 at 10:06 AM
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