Coolant Leak & Engine Overheating on Chevrolet 1500 Pickup

A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.

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Average mileage: 143,166 (87,000–230,000)
Engines affected: 4.3L V6, 5.0L V8, 5.7L V8
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
29 people reported this problem
9 people shared problem details
1990 Chevrolet 1500 Pickup- 5.7L V8140,000
Looks like water is leaking out of the right side of timing chain cover
Water pump leaks coolant resulting in over heating. Stopped driving truck (a wise choice) and will order new pump.
1997 Chevrolet 1500 Pickup- 4.3L V6111,666
Loss of antifreeze /water from leak at water pump causing overheating.
simple to replace just be carful getting the new gasket on there properly.
5.7 litre or a 350 engine
1997 Chevrolet 1500 Pickup- 4.3L V6130,000
replace water pump
Water pump replacement requires removal of the fan belt,fan shroud,radiator(for extra room),fan and clutch fan assembly,possibly some pulleys and belt tensioner,and finally the water pump.Oh, and as always remove the ground cable from the battery.Possibly the positive cable too.
after turn off water drips from under the hood. It's not fixed yet,because it needs a water pump.
1998 Chevrolet 1500 Pickup- 5.7L V8143,000
It leaves a tell tale "wet spot" in the driveway where I park. If coolant gets too low, it will overheat as indicated by temp. gauge or "idiot light". Th Fix....Replace the water pump. Consult your Shop manual for details.
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