Problem Reports
GMC 1500 Pickup
Report: Intake Manifold Gaskets May Leak Coolant or Engine Oil
GMC 1500 Pickup Problem
Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999
Engines Affected: 4.3L V6, 5.0L V8, 5.7L V8, Gasoline
Average Mileage: 152,428 mi (100,000 mi - 206,000 mi)
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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Visitor, 1997 GMC 1500 Pickup, 5.7L V8, 100,000 mi
This was the second set! The first set was replaced at 60,000 miles with the same, problematic AC Delco gaskets. The second setrecently installed are the "improved" Fel-Pro brand gaskets. It is not a matter of "if" the gaslet is going to fail, but "when" is the gaslet going to fail.
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Visitor, 1997 GMC 1500 Pickup, 5.7L V8, 127,000 mi
coolant in engine oil.
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gmc2013, 1997 GMC 1500 Pickup, 5.7L V8, 179,000 miRookie
had to get replaced in serria 1500and suburban 1500 1997
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Visitor, 1998 GMC 1500 Pickup, 4.3L V6, 130,000 mi
lower intake gasket leaking in front of engine right behind/below thermostat. coolant dripped onto tranny cooler lines and dripped off of oil pan by drain bolt.
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Visitor, 1997 GMC 1500 Pickup, 4.3L V6, 185,000 mi
leaking coolant from driver side gasket at top / replaced
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Visitor, 1995 GMC 1500 Pickup, 5.7L V8, 160,000 mi
Hello, it just started leaking at the back of intake manifold on the drivers side.
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Visitor, 1998 GMC 1500 Pickup, 5.0L V8, 192,000 mi
intake gasket leaks
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PRESTONFITZ, 1998 GMC 1500 Pickup, 5.7L V8, 100,000 mi
TechnicianVery common on this vehicles, generally you will notice a coolant leak near the front of the intake manifold, above the timing chain cover.
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