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: 153,573 (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
31 people reported this problem
11 people shared problem details
Noticed the problem when checking over customer's vehicle while readying it for a long trip. Will be replacing when they return.
2006 Pontiac Grand Prix- 3.8L V680,000
i already had fixed around 55000 because the belt kept sliding off if it got even slightly wet.
2001 Pontiac Grand Prix- 3.1L V6100,000
it broke on my way home from work, how to fix
2004 Pontiac Grand Prix- 3.8L V6180,000
One of the pullys just squeal really loud and I was told I need to get that replaced because the baring is going out.
1997 Pontiac Grand Prix- 3.8L V6
Tensioner pulley snapped off
2002 Pontiac Grand Prix- 3.8L V6186,789
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.
2007 Pontiac Grand Prix- 3.8L V6130,000
Pulley seized up and beltcame off
1999 Pontiac Grand Prix- 3.8L V6278,000
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 V6172,300
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 V6167,000
tensioner completelt blew
2007 Pontiac Grand Prix- 3.8L V6165,000
squeeling noise coming from the belt and the belt kept coming off
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