Car Problem Reports

GMC Yukon Denali Intake Manifold Gaskets May Leak Coolant or Engine Oil

 
GMC Yukon Denali Problem
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Model Years Affected: 1999, 2000

Engine Affected: Gasoline

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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.

  • Visitor, , 170,000 mi

    Denali started overheating and was losing antifreeze. Diagnosed and fixed by local mechanic but replacing "defective" intake manifold gaskets.

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