2004 Pontiac Bonneville Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 Pontiac Bonneville
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2004 Pontiac Bonneville ProblemsWater Pump May Fail PrematurelyOil Leaks From Lower Engine Area
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.
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.
2004 Pontiac Bonneville QuestionsCar shaking badly at low speed, check engine light flashes at 25mph, and I smell something when it's running. I've changed #1 and #4 coil, new plugs. Ideas on doing it myself. (2 answers)
The speed can be adjusted but they won't shut off
When I turn the steerining wheel there's a loud squeaking noise. Then I'm told I need fluid but then we can't find where to put like with the brake fluid, oil, ect. Please help.