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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 > 1991 GMC Vandura 2500
Q&A > GMC > 1993 GMC Vandura 2500
Q&A > GMC > 1995 GMC Vandura 2500