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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> DTC B3922 >> Circuit/System Testing

Circuit/System Testing

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 OFF, disconnect the X3 harness connector at the turn signal multifunction switch.
  2. Ignition ON, verify the scan tool Windshield Wiper Switch parameter is OFF.
    • If not the specified value, test the signal circuit terminal N for a short to ground. If the circuit tests normal, replace the BCM.
  3. If all circuits test normal, test or replace the turn signal multifunction switch.
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