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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Displays And Gauges) >> Diagnostic Information and Procedures >> DTC P0381 >> 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, command the Wait to Start Lamp ON and OFF with a scan tool. Observe the Wait to Start Lamp turns ON and OFF with each command.
  2. Command the Wait to Start Lamp ON and OFF with a scan tool while observing the following control circuit status parameters:
    • Wait To Start Ind. Ctrl. Ckt. Short Gnd. Test Status
    • Wait To Start Ind. Ctrl. Ckt. Open Test Status
    • Wait To Start Ind. Ctrl. Ckt. Short Volts Test Status

      Each parameter should change from OK and Not Run or from Not Run and OK.

  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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