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Intake Manifold Gasket May Leak Coolant or Engine Oil on GMC Savana 3500

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 119,666 (53,000–157,000)
Engines affected: 5.7L V8, Gasoline
7 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002
14 people reported this problem
Viewing 1 - 3 of 3 comments
External coolant leak that diagnosed the problem. Using oil extensively for a couple of months leading up to this.
changed oil and it was light brown with water mix, coolant has to be added regularly from leak.
replaced intake manifold gasket
Gasket leaking coolant externally, replace gasket