1999 Other GMC Models belt pretensioner

1999 GMC
15,000 MILES • V8 • 4WD • AUTOMATIC
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SALTONSEADOG
  • MEMBER
  • 1 POST
My trucks belt started squeeling pretty bad thisa week. Spraying WD 40 only helped for a while, and it started again. I am also seeing reduced AC effectivness. Could this be a bad tensioner?
How do I confirm this? Can I replace it myself without a nightmare?
Jun 20, 2008 at 4:10 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi:
Yes the tensionier can cause the problem. The belt should be tight enough that you can only move it back and forth about an inch. To replace it shouldn't be too hard. If you need the routing schematic, go to belt routing on this page.
Dec 10, 2008 at 7:22 AM
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