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Home >> Chevrolet >> 2020 >> Bolt EV LT >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC B3031 >> Circuit/System Verification

Circuit/System Verification

  1. Verify the component specifications are correct: Keyless Entry Transmitter = Correct part - Key Part Number
    • Go to next step: If correct 
  2. Verify the scan tool parameter: Immobilizer Transponder Key = 2 or more
    • If not correct 

      Add/Replace Key Fobs - Keyless Entry Transmitter = 2 or more

    • Go to next step: If correct 
  3. Replace the component: Keyless Entry Transmitter Refer to Remote Control Door Lock and Theft Deterrent Transmitter Programming
  4. Verify the scan tool procedure was successful. - Learn Mode Inactive
    • If not the specified state 

      Replace the component: K9 Body Control Module

    • Go to next step: If the specified state 
  5. All OK.