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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Power Door Locks And Vehicle Access - Diagnostic Information And Procedures (2 Of 2) >> Diagnostic Information and Procedures >> DTC B1B09 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify the scan tool Left Front Door Ajar Switch parameter changes between Ajar and Closed when opening and closing the driver door.
    • Go to next step: If the parameter changes 
  3. Verify DTC B1038 is not set
    • Go to next step: If DTC B1038 is not set 
  4. Verify DTC B1B09 is not set
    • If DTC B1B09 is set 

      Refer to Circuit/System Testing

    • Go to next step: If DTC B1B09 is not set 
  5. A fault is not currently present and may be an intermittent condition