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Home › Chevrolet › 2020 › Spark LS, Standard Trans › Repair and Diagnosis › Engine Performance › System › Data Communications › Diagnostic Information and Procedures › DTC B2B12 or B2B13 › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON/Vehicle in Service Mode.
  2. Verify that DTC B2B12 or B2B13 is not set.
    • If any of the DTCs are set 

      Replace the K56 Serial Data Gateway Module.

    • Go to next step: If none of the DTCs are set 
  3. All OK
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