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Tahoe / Yukon Service Manual

ABS Malfunction

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 Circuit/System Description For an overview of the component/system, refer to: ABS Description and Operation 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 that no DTCs are set. ⇒ If any of the DTCs are set Refer to: Diagnostic Trouble Code (DTC) List - Vehicle ⇓ If no DTC is set
  3. Perform the scan tool control function: All Indicators Command » ON ⇒ ABS Indicator Control = OFF Replace the component: P16 Instrument Panel Cluster Control Module ⇓ ABS Indicator Control = ON
  4. Ignition » On / Vehicle » In Service Mode
  5. Verify the indicator status: ABS Warning Indicator = ON — For 5 s ⇒ ABS Warning Indicator ≠ OFF Replace the component: K160 Brake System Control Module ⇓ ABS Warning Indicator = OFF
  6. 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