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Impala Premier, Gas/Ethanol
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Repair and Diagnosis
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Charging Systems
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Battery, Charging System And Starting System
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Diagnostic Information and Procedures
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DTC P305F: Dual Battery Control Module Performance
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Conditions for Clearing the DTC
Conditions for Clearing the DTC
The voltage at the IGN input of the ECM is above 8.9 V for more than 3 consecutive start events.