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Hummer
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2008
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H2 4D Utility Wagon
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Repair and Diagnosis
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Body & Frame
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Diagnostic Information and Procedures
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DTC B1544, B1600, or B1605
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Conditions for Clearing the DTC
Conditions for Clearing the DTC
A current DTC will clear when the fault is no longer present.
A history DTC will clear after 40 malfunction-free ignition cycles.