Oil Pump Drive O-ring May Leak Oil From Rear of Engine on Pontiac Trans Sport

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: (–)
3 model years affected: 1996, 1997, 1998
4 people reported this problem
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