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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 503 (Transfer Case - Mp 3023/3024 (NQH)) >> Diagnostic Information and Procedures >> Front Axle Will Not Engage >> Circuit/System Testing

Circuit/System Testing

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  1. If this is occurring without DTC C0379 setting it is likely related to a mechanical issue. Refer to Four-Wheel Drive Does Not Engage .
  2. If no mechanical issue is found replace the front axle actuator.
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