Intake Manifold Gasket May Leak Coolant or Engine Oil on Chevrolet Express 2500

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.

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Average mileage: 106,857 (31,000–195,000)
Engines affected: 5.0L V8, 5.7L V8, Gasoline
7 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002
15 people reported this problem
6 people shared problem details
2002 Chevrolet Express 2500- 5.0L V868,000
Smelled Antifreeze and had it checked out to find the Intake Manifold was leaking Estimate Cost $940.00 and I am on SS. THANKS GM
1 person likes thisFlag inappropiate
2000 Chevrolet Express 2500- 5.0L V831,000
was leaking antifreeze thought it was the water pump had it replaced still leaking antifreeze antifreeze in the oil manifold gasket leaking had to replace see if it if it works
2002 Chevrolet Express 2500- 5.7L V8150,000
Coolant is leaking from the intake manifold, I am not sure if it's the gasket or I'd it is cracked.
2000 Chevrolet Express 2500- 5.7L V8103,000
Intake manifold gasket leaks. Bolts, after time, were not torqued properly. Tightening didn't help.
2001 Chevrolet Express 2500- 5.0L V8101,000
Antifreeze leaking from the top of the engine on the passenger side, intake manifold gasket was worn out, replaced and changed oil.
Engine was misfiring real bad sprayed starting fluid around intake and could hear the difference,replaced gasket
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