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Tahoe / Yukon Service Manual

DTC C05A3 or C05A4

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 C05A3 Wheel Speed Sensors Supply Circuit High Voltage DTC C05A4 Wheel Speed Sensors Supply Circuit Low Voltage 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 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 » On / Vehicle » In Service Mode
  2. Verify DTC C05A3, C05A4 is not set. ⇒ If DTC C05A3, C05A4 is set Replace the component: K160 Brake System Control Module ⇓ If the DTC is not set
  3. 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