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 Jimmy
Average mileage: 105,000 (85,000–125,000)
8 people reported this problem
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THE INTAKE HOSE JUST CAME OFF WHILE IN A PARKING LOT THANK GOD. I COULDN'T GET THE JIMMY TO STOP I HAD TO STAND ON BRAKES. IT ALSO HAD A LEAK RAN BAD TILL I REPLACED THE O-RING.
2001 GMC Jimmy 85,000 mi, Visitor
new intake manifold gasket installed