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2009
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Impala SS
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Repair and Diagnosis
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Electrical
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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 B1424
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Circuit/System Verification
Circuit/System Verification
Engine running measure and record the voltage at the battery terminals.Verify that the battery voltage is 12.6-15.5 volts.
If the battery voltage is not within the specified range, refer to
Charging System Test