Oil Pump Drive O-ring May Leak Oil From Rear of Engine on Pontiac Grand Prix

An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.

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Average mileage: 90,000 (90,000–90,000)
Engines affected: 3.1L V6, 3.8L V6
11 model years affected: 1992, 1994, 1995, 1996, more1997, 1998, 1999, 2000, 2001, 2002, 2003
14 people reported this problem
1 person shared problem details
1992 Pontiac Grand Prix- 3.1L V690,000
Had a leak for a month before I got it fixed. It was leaking from the rear of the engine. My mechanic said that it was a 22 cent o ring that goes on these vehicles a lot.
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