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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Transfer Case - Mp 3025 (NQH)) >> Diagnostic Information and Procedures >> DTC C11A4 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition - On/Vehicle - In Service Mode
  2. Clear DTCs
  3. Perform the scan tool control function:

    Transfer Case Range - Neutral

    Transfer Case Range - 2WD

    Transfer Case Range - 4WD/AWD Automatic

    Transfer Case Range - 4WD High/Locked

    Transfer Case Range - 4WD Low

    Verify the scan tool parameter:

    Range Actuator Position = Neutral

    Range Actuator Position = 2WD

    Range Actuator Position = 4WD/AWD Automatic

    Range Actuator Position = 4WD High/Locked

    Range Actuator Position = 4WD Low

    • If not the specified values 

      Refer to: Circuit/System Testing

    • Go to next step: If the specified values 
  4. Verify DTC C11A4 is not set.
    • If the DTC is set 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  5. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  6. All OK.