Intake Manifold Gasket May Leak Coolant or Engine Oil on Chevrolet 1500 Pickup

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. Our technicians tell us that operating the engine  with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.

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Average mileage: 145,078 (55,000–370,000)
Engines affected: 4.3L V6, 5.0L V8, 5.7L V8, Both Sides, Gasoline
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
90 people reported this problem
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Viewing 1 - 20 of 56 problem details
whats the difference in a blown head gasket and a blown intake gasket
1998 Chevrolet 1500 Pickup - 5.7L V8 146,200 mi,
leaking antifreece in oil , havnt fixed yet.
1997 Chevrolet 1500 Pickup - 5.7L V8 177,250 mi,
anti freeze in oil, changed lower intake gaskets.
1992 Chevrolet 1500 Pickup - 5.7L V8 142,000 mi,
leaking at manifold water coolant and passing on to exhaust causing smoke steam
1997 Chevrolet 1500 Pickup - 4.3L V6 55,000 mi,
Re-call on intake manifold, replaced at 30K miles & again at 60K miles. It is beginning to leak again at 110K miles.
1993 Chevrolet 1500 Pickup - 5.7L V8 300,000 mi,
coolant in oil wont pressureize..
Started smelling antifreeze around the truck, looks like it is pooling up around the base of the intake manifold area ........... My understanding is that the ORANGE DEXCOOL antifreeze is eating up the factory installed intake manifold gaskets. How could GENERAL MOTORS get away with this kind of issue ? The same problem on almost all GM cars and trucks that use DEXCOOL coolant.
1991 Chevrolet 1500 Pickup - 5.0L V8 370,000 mi,
Oil getting in the cooling system but no water in the oil
1998 Chevrolet 1500 Pickup - 5.7L V8 98,000 mi,
leaking plastic gasket why would they us plastic where heat would build and ruin plastic integrety come on chevy
1998 Chevrolet 1500 Pickup - 5.7L V8 173,000 mi,
intake manifold gasket had to be replaced
1998 Chevrolet 1500 Pickup - 4.3L V6 196,000 mi,
Blown intake manifold gasket
1997 Chevrolet 1500 Pickup - 5.7L V8 142,000 mi,
oil level increasing and pressure dropping
coolant leaking from intake manifold
1998 Chevrolet 1500 Pickup - 5.7L V8 160,000 mi,
This is the second time, since I bought the truck new, that I've had to replace the intake manifold gaskets due to coolant leakage. The good news is that Fel-Pro has realized that their manifold gaskets suck and redesigned them. No more plastic with silicone sealing material. Hoping that they fixed the problem that the Chevy engineers created. Maybe they'll come out with a non-plastic distributor next. We can only hope.
1997 Chevrolet 1500 Pickup - 5.0L V8 72,000 mi,
Started using water and knocking.very expensive to fix.
1996 Chevrolet 1500 Pickup - 5.7L V8 80,000 mi,
It was losing coolant on the back side of the motor driver side gasket gets brittle between head manifold must be bad gasket design. pulled motor apart ordered order new style of gasket put back together replaced spider injector with new style spider injector truck runs good as new
1999 Chevrolet 1500 Pickup - 4.3L V6 67,000 mi,
Chevy you suck. Your cars and trucks are crap. Not what they used to be. I think you guys are designing them to fail.
1997 Chevrolet 1500 Pickup - 5.7L V8 267,000 mi,
I'm getting oil in the cooling system
1996 Chevrolet 1500 Pickup - 5.0L V8 88,000 mi,
Anti-freeze leak on garage floor. Had intake gaskets replaced. O.K. now at 115,00.