Car Problem Reports

Pontiac Montana Leaking Water Pump May Cause Coolant Loss and Overheating

Pontiac Montana Problem
14 Reports
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Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005

Engine Affected: 3.4L V6

Average Mileage: 133,800 mi (97,000 mi - 230,000 mi)


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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