Coolant Leak & Engine Overheating on Chevrolet Astro

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: 165,500 (139,000–192,000)
Engine affected: 4.3L V6
6 model years affected: 1990, 1991, 1992, 1993, more1994, 1995
8 people reported this problem
1 person shared problem details
1995 Chevrolet Astro139,000
Coolant started leaking from the Weep-hole under the water pump shaft casting. I replaced the water pump and used a homemade gasket w shellac. No leaks woks fine
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