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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 113 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (2 Of 2)) >> Diagnostic Information and Procedures >> DTC P1000, P1001, P1003, P1008, P1009, P100A, P100E, P103D, P103E, P10B6-P10B9, P10BF, P10C6-P10C8, P10F5, P10F6, or P10FA >> 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 / Vehicle - In Service Mode
  2. Verify there are no DTCs set related to the following system/component: Serial Data
    • Go to next step: If a related DTC is not set 
  3. Clear the DTCs.
  4. Operate the vehicle within the Conditions for Running the DTC.

    Verify the DTC does not set.

    • If the DTC sets 
    1. Ignition/Vehicle - Off
    2. Replace the component: The control module or component that is sending the error message to the control module K20.
    3. Operate the vehicle within the Conditions for Running the DTC.

      Verify the DTC does not set.

      • If the DTC sets

        Replace the component: K20 Engine Control Module

      • Go to next step: If the DTC does not set
    4. All OK.
    • Go to next step: If the DTC does not set 
  5. All OK.
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