Monte Carlo

Oil Pump Drive O-ring May Leak Oil From Rear of Engine on Chevrolet Monte Carlo

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 117,919 (71,000–142,758)
Engines affected: 3.1L V6, 3.4L V6
11 model years affected: 1995, 1996, 1997, 1998, more1999, 2000, 2001, 2002, 2003, 2004, 2005
15 people reported this problem
Viewing 1 - 2 of 2 comments
oil leak looks like rear main seal but i had 3.1 done this check at throttle look down round object with a fork with a bolt oil pump shalf o ring replace stop s leak plus 3.4 eng calls too remove head too fix theres a trick too fix shaft can be pulled up enough too clean and full area gasket maker fill i used whole tube fixed
My oil pump went out and threw a rod and blew the engine up at the same time.