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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case - Mp 3025 (NQH) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC C11B3 or C15A9 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Verify no other DTC's are set, except for DTC C05DD
    • Go to next step: If no other DTCs are set 
  3. Perform the scan tool configuration/reset function:Range Actuator Correlation Learn
  4. Wait 10 s before proceeding to the next step.
  5. Ignition/Vehicle - Off
  6. Wait 30 s before proceeding to the next step.
  7. Ignition - On/Vehicle - In Service Mode
  8. Verify DTC C11B3, C15A9 is not set.
    • If the DTC is set 

      Refer to: Circuit/System Testing

    • Go to next step: If the DTC is not set 
  9. Operate the component:S126 Ride Control Switch - 2WD/4WD/AWD Automatic/4WD High/Locked/4WD Low

    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 
  10. All OK.
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