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GMC 2500 Pickup Problems

Oil Leak From Distributor Shaft Seal on GMC 2500 Pickup

Problem Description and Possible Solution

An oil leak may develop from the distributor o-ring seal requiring replacement of the seal.

(6 people reported this problem)

GMC 2500 Pickup Vehicles With This Problem

RepairPal Verified
Average mileage: (–)
6 model years affected: 1990, 1991, 1992, 1993, more1994, 1995
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Brake problem? Or maybe a faulty head gasket cylinder?
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