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.
Intake Manifold Gasket May Leak Coolant or Engine Oil on GMC Savana 1500
Average mileage: 74,000 (74,000–74,000)
Engine affected: 5.7L V8
8 people reported this problem
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Leaking at left rear corner. This thing has been babied, and I have continuous problems. Shocks, springs, water pump, transmission solenoids, etc. etc. I have always bought American cars but I'm about done.