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P0556 Diagnostic Trouble Code Discussion for April 2013

Brake Booster Pressure Sensor Performance


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Trouble Ticket Help Requests for DTC P0556
Help Request Posted
2007 Chevrolet Silverado 2500 HD Classic LT 6.0L No Start VIN: 1GCHC24U17
P0556: ignition one voltage low. this vehicle came in a tow truck,dye on the fly I have a code for no ignition one voltage, the scanner shows 0 voltage,but I have power to the ignition coils with the key on ignition relay has two battery voltages with the key on. fuel pump does not turn on,by...
April 03, 2013
2007 Chevrolet Silverado 2500 HD Classic LT 6.0L No Start VIN: 1GCHC24U17
P0556: ignition one voltage low. this vehicle came in a tow truck,dye on the fly I have a code for no ignition one voltage, the scanner shows 0 voltage,but I have power to the ignition coils with the key on ignition relay has two battery voltages with the key on. fuel pump does not turn on,by...
April 03, 2013