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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 20 (Engine Controls And Fuel - 4.3L (LV1) - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC P0089, P00C6, P228C, P228D, or P2C1E-P2C20 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition/Vehicle - Off
  2. Verify the following conditions do not exist :
    • Camshaft Position Actuator - Binding or Sticking/Stuck
    • Direct Fuel Injection Fuel Rail - Leaking/Restricted
    • Fuel - Contaminated/Poor Quality
    • Fuel Feed Pipe - Leaking/Restricted
    • Fuel Pressure Regulator - Binding or Sticking/Stuck
    • G18 High Pressure Fuel Pump - Binding or Sticking/Stuck/Loose
    • Q17 Fuel Injector - Leaking/Restricted
    • If a condition exists 

      Repair or replace as necessary

    • Go to next step : If no condition exists 
  3. Remove the component : G18 High Pressure Fuel Pump
  4. Verify a condition does not exist with the component : Camshaft Lobe(s) - Worn/Visible Damage
    • If a condition exists 

      Replace the component : Camshaft

    • Go to next step : If no condition exists 
  5. Test or replace the component : G18 High Pressure Fuel Pump
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