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2004 Pontiac Bonneville Repair and Maintenance Costs

A guide to repairs, service, and maintenance costs for your 2004 Pontiac Bonneville

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2004 Pontiac Bonneville Problems

Engine Stalling Due to Mass Air Flow/Crankshaft Position Sensor Failure

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.

Intake Manifold Gaskets Can Develop Engine Oil Leaks

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.

Erratic Shifting of the Automatic Transmission

The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.

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2004 Pontiac Bonneville Questions

With 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?

Car 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)

Windshield wipers won't shut off (1 answer)

The speed can be adjusted but they won't shut off

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