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Problems for specific Pontiac Bonneville years:

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Newest reported 2005 Pontiac Bonneville problems

 

Verified for the Pontiac Bonneville

An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.

4 Reports
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Verified for the Pontiac Bonneville

The mass air flow or crankshaft position sensor may fail causing the engine to stall intermittently. Proper diagnoses will be necessary to determine the cause of any stalling condition.

47 Reports
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Verified for the Pontiac Bonneville

Failure of the crankshaft position sensorignition control module, or powertrain control module (PCM) may cause the Check Engine Light to illuminate.

9 Reports
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Verified for the Pontiac Bonneville

The crankshaft position sensor may fail causing the engine to stall intermittently, the Check Engine Light may or may not illuminate.

3 Reports
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Verified for the Pontiac Bonneville

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

6 Reports
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Verified for the Pontiac Bonneville

The water pump may develop a coolant leak resulting in an engine overheating condition.

 

30 Reports
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Verified for the Pontiac Bonneville

An intake manifold vacuum leak can develop from a variety of sources, often causing illumination of the Check Engine Light with codes P0171 & P0174 stored. Thorough diagnoses will be necessary to pinpoint the cause in order to make the correct repairs. A "smoke" machine is often used to isolate the cause of difficult to find vacuum leaks.

2 Reports
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Verified for the Pontiac Bonneville

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.

4 Reports
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Verified for the Pontiac Bonneville

Overheating of the engine may cause the cylinder head to expand, severely straining the head bolts and damaging the threads in the engine block. This commonly results in a blown head gasket. Our technicians tell us the engine block threads must be repaired before the cylinder head is reinstalled.

2 Reports
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Verified for the Pontiac Bonneville

The engine may develop an oil leak from the lower crankcase portion of the engine block. Our technicians tell us that the engine must be removed from the vehicle to properly repair this oil leak.

2 Reports
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The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.

19 Reports
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Verified for the Pontiac Bonneville

It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.

24 Reports
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Verified for the Pontiac Bonneville

The front struts may show signs of wear, or be excessively bouncy ride at freeway speeds. This may begin to occur at around 75,000 miles.

9 Reports
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Verified for the Pontiac Bonneville

The fuel pump can fail causing the engine to stall and not restart. Our technicians highly recommend to replace your fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

21 Reports
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Verified for the Pontiac Bonneville

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

2 Reports
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