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 ProblemsEngine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure
The intake manifold gaskets can develop external engine oil or coolant leaks. The intake manifold will need to be removed and the gaskets replaced to correct this issue. In some cases the plastic intake manifold my be damaged requiring replacement.
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.
2004 Pontiac Bonneville QuestionsWith heat on in the discharge air will only reach 100° Clean heater core . (1 answer)
Replaced blend door actuator or same problem only reaches 100° Where is the temperature probe? It is a manual controls if I unplug actuator and turn vent door to hot temperature reaches 140°. Problem is when I turn the car off it goes back to halfway point and then won't drive to full heat?
The speed can be adjusted but they won't shut off