NHTSA — Engine And Engine Cooling: Cooling System Problems

3.9

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
31,373 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1997 Pontiac Bonneville cooling system problems

cooling system problem

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1997 Pontiac Bonneville Owner Comments

problem #8

Jan 052009

Bonneville

  • miles

A D V E R T I S E M E N T S

The contact owns a 1997 Pontiac Bonneville. The contact stated that the vehicle has plastic intake parts, which include the upper and lower intake manifold. While the vehicle was undergoing a routine tune-up, she noticed antifreeze on the intake manifold. The vehicle made a loud booming noise similar to a backfire when the engine was started. The contact could smell fuel in the passenger compartment after placing fuel into the vehicle. There were no recalls for the failures described on this year, make, and model vehicle. The VIN and failure mileage were unknown. The current mileage was 134,000.

- Irvine, KY, USA

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problem #7

Jan 072003

Bonneville

  • miles
Nar 1/29/2003. The vehicle was delivered to the consumer with a bent water pump and a bent wheel. The alternator, power steering pump, transmission and egr valve were replaced.

- Bella Vista, AR, USA

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problem #6

Jan 142004

Bonneville

  • Automatic transmission
  • 81,980 miles
1997 Pontiac Bonneville with dextrol coolant is causing constant trouble. The latest is having to replace the plastic intake manifold to the tune of $598.18. Why is this piece plastic, but the pipe going into it is metal? the dex cool is deteriorating all rubber seals.

- Franklin, TN, USA

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problem #5

Apr 212003

Bonneville 6-cyl

  • Automatic transmission
  • 94,000 miles

A D V E R T I S E M E N T S

Loss of coolant. Plastic air intake mounted on top of intake manifold failed leaking coolant under pressure into combustion chamber. Talked to several licensed technicians in the area and they state that this is a common problem. Requires replacement of air intake. $275 & labor.

- Overland Park, KS, USA

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problem #4

Mar 012002

Bonneville 8-cyl

  • Automatic transmission
  • 75,000 miles
Consumer stated that while driving and without warning coolant fluid was leaking from the engine which caused a distraction to the consumer. Dealer notified. Ts fumes noticed since vehicle was new, however somewhat better but can still be detected.

- Manchester, CT, USA

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Dex-Cool lawsuit intake gasket leak engine complaint electrical issue heater complaint transmission complaint paint defect Bonneville recall
problem #3

Apr 032002

Bonneville

  • miles
Excessive loss of engine coolant while driving. Dealer was not notified at this time. Feel free to provide any further information.

- Willoughby, OH, USA

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problem #2

Oct 012000

Bonneville

  • Automatic transmission
  • miles
Was traveling 55mph when vehicle started to overheat. Pulled to side of road, checked under hood, and noticed steam & anti-freeze was spilling over everything. Turned vehicle off & anti-freeze just dripped. Noticed it was coming out of bottom of water pump. Let vehicle cool down & refilled it with water & drove home. Dealer replaced water pump, engine coolant system failed.

- Waterford, WI, USA

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problem #1

Sep 152000

Bonneville

  • miles
No summary

- Pittsburgh, PA, USA

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