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 3500
Average mileage: 119,666 (53,000–157,000)
Engines affected: 5.7L V8, Gasoline
14 people reported this problem
3 people shared problem details
2001 GMC Savana 3500- 5.7L V8130,000Visitor
External coolant leak that diagnosed the problem. Using oil extensively for a couple of months leading up to this.
2001 GMC Savana 3500- 5.7L V853,000Visitor
changed oil and it was light brown with water mix, coolant has to be added regularly from leak. replaced intake manifold gasket
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