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Tahoe / Yukon Service Manual

DTC C0571, C0572, or C0574

Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis: Strategy Based Diagnosis An overview of each diagnostic category can be found here: Diagnostic Procedure Instructions DTC Descriptor DTC C0571 Brake Master Cylinder Pressure Sensor 1 Circuit Low Voltage DTC C0572 Brake Master Cylinder Pressure Sensor 1 Circuit High Voltage DTC C0574 Brake Master Cylinder Pressure Sensor 1 Circuit Performance Symptom Byte Information: Symptom Byte List Circuit/System Description For an overview of the component/system, refer to: ABS Description and Operation Conditions for Running the DTC Ignition/Vehicle = ON Conditions for Setting the DTC Brake System Control Module Internal Malfunction Actions Taken When the DTC Sets ABS Warning Indicator = ON Traction/Stability Control Indicator = ON Brake warning indicator malfunction. = ON Hill Descent Control = ON Vehicle Speed Limit = Less than 100 km/h (62 MPH) Malfunction Indicator Lamp (MIL) = ON DTCs listed in the DTC Descriptor category = Type A DTC Conditions for Clearing the DTC DTCs listed in the DTC Descriptor category = Type A DTC Reference Information Schematic Reference Antilock Brake System Schematics Connector End View Reference Master Electrical Component List Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References Circuit/System Verification

  1. Ignition/Vehicle » Off = 10 s
  2. Ignition » On / Vehicle » In Service Mode
  3. Verify DTC C0571,C0572,C0574 is not set. ⇒ If DTC C0571,C0572,C0574 is set Replace the component: A104 Brake Master Cylinder ⇓ If the DTC is not set
  4. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification For control module replacement, programming, and setup refer to: Control Module References