A coolant leak may develop form the Intake manifold gasket causing overheating complaints. The coolant leak may be internal allowing coolant to mix with the engine oil, this condition can result in internal engine damage. Be aware that this problem is often mistaken as a blown head gasket.
Car Problem Reports
Chevrolet Suburban 1500 Intake Manifold Gaskets May Leak Coolant
Chevrolet Suburban 1500 Problem
Engine Affected: 5.7L V8