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 Express 2500
Average mileage: 95,444 (25,000–195,000)
Engines affected: 5.0L V8, 5.7L V8, Gasoline
18 people reported this problem
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Viewing 1 - 9 of 9 problem details
2000 Chevrolet Express 2500 - 5.0L V8 31,000 mi, Visitor
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 V8 150,000 mi, Visitor
Coolant is leaking from the intake manifold, I am not sure if it's the gasket or I'd it is cracked.
2002 Chevrolet Express 2500 - 5.0L V8 68,000 mi, Visitor
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
1996 Chevrolet Express 2500 - 5.7L V8 86,000 mi, Visitor
Coolant leak found when shock absorbers were being changed.
1997 Chevrolet Express 2500 - 5.0L V8
Oil leak under the engine close to the oil filter
2000 Chevrolet Express 2500 - 5.0L V8 25,000 mi, Visitor
Bought 2000 2500 Chevy Express at 23000 miles after it sat for 10 years second time I am replacing the lower intake manifold gasket
2000 Chevrolet Express 2500 - 5.7L V8 103,000 mi, Visitor
Intake manifold gasket leaks. Bolts, after time, were not torqued properly. Tightening didn't help.
2001 Chevrolet Express 2500 - 5.0L V8 101,000 mi, Visitor
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