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Home >> GMC >> 2023 >> Hummer EV Edition 1 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Diagnostic Information and Procedures >> DTC C057F, C0580, C0582, C0590, or C0591 >> Circuit/System Verification

Circuit/System Verification

  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC C057F, C0580, C0582, C0590, C0591 is not set.
    • If the DTC is set 

      Replace the component: A104 Brake Master Cylinder

    • Go to next step: If the DTC is not set 
  3. All OK.
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