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Problems for specific Pontiac Bonneville years:

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Most reported 2004 Pontiac Bonneville problems

 

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.

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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.

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