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HOMESERVICE MANUALSCHEVROLET2020EXPRESS 2500 LS, 4.3L ENG VIN P, GASREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS AND FUEL - 4.3L (LV1) - DIAGNOSTIC INFORMATION AND PROCEDURES (1 OF 2)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P025A (CHASSIS CONTROL MODULE)CIRCUIT/SYSTEM VERIFICATION
2020 Chevrolet Express 2500 LS, 4.3L Eng VIN P, Gas

Circuit/System Verification

2020 Chevrolet Express 2500 LS, 4.3L Eng VIN P, GasSECTION Circuit/System Verification
  1. Ignition - On / Vehicle - In Service Mode
  2. Perform the scan tool control function : Fuel Pump Enable Command @ Engine Control Module - On and Off

    Verify the component turns On and Off : G12 Fuel Pump

    • If the component does not turn On and Off 

      Refer to : Circuit/System Testing

    • Go to next step : If the component turns On and Off 
  3. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

    Verify the DTC does not set.

    • If the DTC sets 

      Refer to : Circuit/System Testing

    • Go to next step : If the DTC is not set 
  4. All OK.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.