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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Engine Controls And Fuel - 2.8L (LWN) Diesel - Diagnostic Information And Procedures (1 Of 3)) >> Diagnostic Information and Procedures >> DTC P0300-P0304 >> Circuit/System Testing

Circuit/System Testing

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  1. Verify the following conditions do not exist :
    • Q17 Fuel Injector - Incorrect connection/Leaking/Loose/Restricted
    • Fuel - Contaminated/Dirty - Refer to : Contaminants-in-Fuel Diagnosis
    • Fuel - Fill Level = Low
    • Fuel Line(All) - Blocked/Incorrect connection/Kinked/Leaking/Loose/Restricted
    • Fuel Pressure - Low - Refer to : Fuel System Diagnosis
    • If a condition exists 

      Repair or replace as necessary

    • Go to next step : If no conditions exist 
  2. Perform the following procedure/test : Engine Compression Test
    • Go to next step : If the procedure/test passes 
  3. Test or replace the component : Q17 Fuel Injector