FixVault
Home › Cadillac › 2017 › CT6 Plug-In › Repair and Diagnosis › Body & Frame › Ignition Switch/Steering Lock › Immobilizer System › Diagnostic Information and Procedures › DTC B3984: Device 1 Environment Identifier Not Programmable › Circuit/System Verification

Circuit/System Verification

  1. Perform the Programming and Setup procedure for the control module that set DTC B3984.
  2. Verify DTC B3984 does not set after programming.
    • If the DTC sets after programming 

      Replace the control module that set the DTC.

    • If the DTC does not set after programming 
  3. All OK.
About FixVault