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.Google+
Car Problem Reports
Chevrolet S10 Leaking Water Pump May Cause Coolant Loss and Overheating
Chevrolet S10 Problem
Engine Affected: 4.3L V6
Visitor, 1996 Chevrolet S10, 4.3L V6, 153,000 mi
Water Pump gave out just a year and a half after I replaced it. Thank God for lifetime warranty.