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Home >> Cadillac >> 2021 >> XT5 Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 823 (Transfer Case - Mp 3023/3024 (NQH) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Front Axle Will Not Engage >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition - On/Vehicle - In Service Mode
  2. Verify DTC C118D, C119B, C119C is not set.

    3. If a related DTC is set

    Refer to: DTC C118D, C119B, or C119C 

    If a related DTC is not set

  3. Verify a condition does not exist with the component: Front Axle

    4. Refer to: Four-Wheel Drive Does Not Engage

    If a condition exists

    Repair or replace as necessary

  4. Test or replace the component: M26 Front Axle Engagement Actuator
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