Coolant Leak & Engine Overheating on GMC Rally Wagon 3500

A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.

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Average mileage: (–)
Engine affected: Gasoline
7 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996
7 people reported this problem
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