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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (Antilock Brake System) >> Diagnostic Information and Procedures >> ABS Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that no DTCs are set.
    • Go to next step: If no DTCs are set 
  3. Verify the Instrument Cluster ABS indicator turns On and Off when commanding the All Indicators On and Off with a scan tool.
    • If ABS indicator does not turn On and Off 

      Replace the P16 Instrument Cluster.

    • Go to next step: If the ABS indicator turns On and Off 
  4. Verify the ABS indicator turns Off five s after the ignition is turned On.
    • If the ABS indicator does not turn Off 

      Replace the K17 Electronic Brake Control Module.

    • Go to next step: If the ABS indicator turns Off 
  5. All OK.
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