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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 >> Transfer Case Shift Control Switch Malfunction >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On/Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following component/system:S126 Ride Control Switch & K69 Transfer Case Control Module
    • Go to next step: If no DTC is set 
  3. Perform the scan tool control function:Transfer Case Range - 2WD/4WD/AWD Automatic/4WD High/Locked

    Verify operating the controls yields the expected results.

    • Go to next step: If the function is executed as expected 
  4. Operate the component:S126 Ride Control Switch - 2WD/4WD/AWD Automatic/4WD High/Locked

    Verify operating the controls yields the expected results.

    • Go to next step: If the function is executed as expected 
  5. All OK.