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Home >> Buick >> 2020 >> Envision Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Antilock Brake System >> Diagnostic Information and Procedures >> DTC C1252-C1254 >> Circuit/System Verification
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Circuit/System Verification

  1. Ignition ON.
  2. Verify that no other DTCs are set.
    • Go to next step: If no other DTCs are set 
  3. Replace the K71 Transmission Control Module.
  4. Verify that the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
    • If the DTC sets 

      Replace the K17 Electronic Brake Control Module.

    • Go to next step: If the DTC does not set 
  5. All OK.
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