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 Chevrolet Suburban 2500
Average mileage: 98,989 (80,000–116,968)
Engines affected: 5.7L V8, 7.4L V8, Gasoline
11 people reported this problem
3 people shared problem details
1998 Chevrolet Suburban 2500- 5.7L V8116,968Visitor
Engine overheated due to loss of coolant x's. Shop replaced manifold gasket and oil switch, but DID NOT change oil. Oil changed at 117797. Engine failed (threw a rod)at 118870. Now I know why!
1999 Chevrolet Suburban 2500- 7.4L V8100,000Visitor
at 75,000 miles the intake manifold gasket started to leek.
1999 Chevrolet Suburban 2500- 5.7L V880,000Visitor
had to have the gasket replaced they told me it was a common problem that happens on all 5.7's
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