Problem Reports
Pontiac Bonneville
Report: Water Pump May Fail Prematurely
Pontiac Bonneville Problem
Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Engines Affected: 3.8L V6, 3.8L V6 Supercharged
Average Mileage: 141,750 mi (97,000 mi - 189,000 mi)
The water pump may develop a coolant leak resulting in an engine overheating condition.
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maniacmechinic, 2000 Pontiac Bonneville, 3.8L V6 Supercharged, 150,000 miRookie
Failing water pump caused an antifreeze leak as well as overheating. It also caused the heater to stop working as well when coolant would get low.
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Visitor, 1993 Pontiac Bonneville, 127,000 mi
over heating waterpump leaking
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Visitor, 1998 Pontiac Bonneville, 3.8L V6, 146,000 mi
Water pump is literally spraying water everywhere. I have never in my life seen a water pump fail like this.
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your.mechanic, 1996 Pontiac Bonneville, 3.8L V6
Masterwater pump was leaky....replaced and it was okay
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Visitor, 1996 Pontiac Bonneville, 3.8L V6, 140,000 mi
leaking coolant around water pump. Last GM vehicle I'll ever buy.
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Visitor, 2001 Pontiac Bonneville, 3.8L V6 Supercharged, 97,000 mi
I haven't got the problem fixed yet. I will have to take it to the shop because I am not car SAVVY. I noticed my cars temperature needle rising alot so I would add coolant. Over time I seemed to be having to add a half a gallon to a gallon every two to three days. Today I decided to add water to the radiator and to the reservoir but I left the top off of the radiator when I started the car. The coolant flowed smoothly from the reservoir to the radiator. It started to leak around the hose in between the alternator and the belt on the supercharger. I have researched online figured out that I may possibly need to replace my water pump
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Visitor, 2002 Pontiac Bonneville, 3.8L V6
I was sitting in front of a convenience store with my car running and my car began to smoke. I got out popped the hood of the car to see all my coolant leaking from my car.
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Visitor, 2003 Pontiac Bonneville, 3.8L V6, 140,000 mi
engine overheating and serpentine belt broke because of water pump failure. 140,000 miles
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