Serpentine belt replacement?

2008 PONTIAC GRAND PRIX
127,500 MILES • AUTOMATIC
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BTSATTEL
Which pulley is the tensioner
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May 23, 2026 at 11:05 PM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,486 POSTS
  • ASE Certified Mechanic
I assume you need the belt diagrams for the 3.8 correct? Here is a diagram which I marked the tensioner pulley for you and a guide to help you do the job as well.

https://www.2carpros.com/articles/replace-serpentine-belt/

Check out the images (below). Let me know if you need anything else.
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May 24, 2026 at 2:54 AM
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