Car Problem Reports

GMC 1500 Pickup Intake Manifold Gaskets May Leak Coolant or Engine Oil

 
GMC 1500 Pickup Problem
24 Reports
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Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999

Engines Affected: 4.3L V6, 5.0L V8, 5.7L V8, Gasoline

Average Mileage: 152,428 mi (100,000 mi - 206,000 mi)

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The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.

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