Serpentine Belt Tensioner Pulley May Wear Out on Pontiac Grand Prix

The serpentine belt tensioner pulley may wear out. Our technicians tell us that in order to get a new pulley from General Motors you must purchase a complete belt tensioner assembly.


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Average mileage: 153,911 (75,310–278,000)
Engines affected: 3.1L V6, 3.8L V6, 3.8L V6 Supercharged
10 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2006, 2007
34 people reported this problem
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Viewing 1 - 12 of 12 problem details
2006 Pontiac Grand Prix - 3.8L V6 80,000 mi,
i already had fixed around 55000 because the belt kept sliding off if it got even slightly wet.
2001 Pontiac Grand Prix - 3.1L V6 100,000 mi,
it broke on my way home from work, how to fix
2007 Pontiac Grand Prix - 3.8L V6 165,000 mi,
squeeling noise coming from the belt and the belt kept coming off
Tensioner pulley snapped off
2007 Pontiac Grand Prix - 3.8L V6 130,000 mi,
Pulley seized up and beltcame off
Noticed the problem when checking over customer's vehicle while readying it for a long trip. Will be replacing when they return.
2004 Pontiac Grand Prix - 3.8L V6 160,000 mi,
I poped the hood and it was broke
2004 Pontiac Grand Prix - 3.8L V6 180,000 mi,
One of the pullys just squeal really loud and I was told I need to get that replaced because the baring is going out.
2002 Pontiac Grand Prix - 3.8L V6 186,789 mi,
The tensioner pulley wheel bearings seized and the entire tensioner assembly had to be replaced because of the damage done by the pulley wheel itself to the tensioner assembly.
1999 Pontiac Grand Prix - 3.8L V6 278,000 mi,
Have had 2 tensioner pullies fail. Both times I ruined my belt. It cheaper to change pulley than replace both. I keep old pulley and belt just incase.
1997 Pontiac Grand Prix - 3.1L V6 172,300 mi,
Pulley has squealed for couple weeks. Drove fine until it sat overnight and when we went to leave there was no power steering. Checked belt to notice it was slipped off bottom pulley.
2002 Pontiac Grand Prix - 3.8L V6 167,000 mi,
tensioner completelt blew