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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Diagnostic Information And Procedures (5 Of 5)) >> Diagnostic Information and Procedures >> Fuel System Diagnosis >> Circuit/System Testing

Circuit/System Testing

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  1. Verify the following conditions do not exist:
    • Poor component electrical connections: Fuel Pump - Electrical Connector
    • Fuel Feed Pipe - Leaking / Restricted - Refer to: Fuel Leak Diagnosis 
    • Fuel Return Pipe - Leaking / Restricted - Refer to: Fuel Leak Diagnosis 
    • If a condition exists 

      Repair or replace as necessary

    • Go to next step: If no condition exists 
  2. Verify the condition does not exist: Fuel Filter - Restricted
    • If the condition exists 

      Replace the component: Fuel Filter

    • Go to next step: If no condition exists 
  3. Test or replace the component: A7 Fuel Pump and Level Sensor Assembly