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Home › Chevrolet › 2017 › SS Automatic Trans › Repair and Diagnosis › Brakes › Parking Brake System › Diagnostic Information and Procedures › DTC C056D: Electronic Control Unit Hardware › Circuit/System Verification

Circuit/System Verification

  1. Ignition ON.
  2. Verify DTC C056D 36 is not set.
    • If DTC C056D 36 is set 
    1. Program the K83 Parking Brake Control Module.
    2. Ignition ON.
    3. Apply and release the park brake.
    4. Verify the DTC is not set.
      • If the DTC is set, replace the K83 Parking Brake Control Module.
      • If the DTC is not set
    5. All OK.
    • If DTC C056D 36 is not set 
  3. Perform the Parking Brake Motor Reset procedure with a scan tool for the Parking Brake Control Module.
  4. Verify DTC C056D is not set.
    • If DTC C056D is set 

      Replace the K83 Parking Brake Control Module.

    • If DTC C056D is not set 
  5. All OK.
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