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.
Car Problem Reports
Chevrolet Monte Carlo Oil Pump Drive O-ring May Leak Oil From Rear of Engine
Chevrolet Monte Carlo Problem
Engines Affected: 3.1L V6, 3.4L V6
Average Mileage: 105,500 mi (71,000 mi - 140,000 mi)