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.
Car Problem Reports
Buick Rendezvous Leaking Water Pump May Cause Coolant Loss and Overheating
Buick Rendezvous Problem
Engine Affected: 3.4L V6
Average Mileage: 81,500 mi (74,000 mi - 89,000 mi)