A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.Google+
Car Problem Reports
GMC Savana 1500 Leaking Water Pump May Cause Coolant Loss and Overheating
GMC Savana 1500 Problem
Engine Affected: 5.7L V8
Visitor, 1997 GMC Savana 1500, 5.7L V8, 190,000 mi
Small leak (oozing) of coolant from water pump seal. Eventually increased with temp increase then noted, and water pump was replaced. Problem solved!