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Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995
An oil leak may develop from the distributor o-ring seal requiring replacement of the seal.
Q&A > GMC > 1990 GMC 2500 Pickup
Common Problems > GMC 2500 Pickup
Q&A > GMC > 1998 GMC 2500 Pickup