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Regal GS, AWD
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Repair and Diagnosis
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Brakes
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Mechanical - Hydraulic
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Hydraulic Brake System
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Diagnostic Information and Procedures
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DTC C027B: Brake Booster Electric Vacuum Pump
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Conditions for Setting the DTC
Conditions for Setting the DTC
A short to ground, short to voltage or open/high resistance is detected on the control circuit.