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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Controls And Fuel - 3.0L (Lm2) Diesel - Repair Instructions (2 Of 2)) >> Repair Instructions >> Fuel System Cleaning >> Cleaning Gasoline from the Fuel System

Cleaning Gasoline from the Fuel System

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  1. Drain the fuel tank.
  2. Disconnect the crankshaft position sensor. Crankshaft Position Sensor Replacement 
  3. Fill the fuel tank to 1/4 full.
  4. Loosen the fuel filter drain and connect the filter to a hose that flows into a metal container.
  5. Using the scan tool control function, cycle the fuel pump relay to operate the fuel pump until clean fuel flows from the fuel filter drain into a metal container.
  6. Hand tighten the fuel filter drain and disconnect the hose.
  7. Install a hose on the fuel return line and insert the other end into a 7.6 liters (2 gallon) metal container.
  8. Prime the fuel system until 3.8 liters (1 gallon) of fuel has passed into the container. Fuel System Priming
  9. Reconnect the fuel return line.
  10. Reconnect the crankshaft position sensor. Crankshaft Position Sensor Replacement 
  11. Start and run the engine for 15 minutes. If the engine does not start, prime the fuel system. Fuel System Priming
  12. Stop the engine.
  13. Clean any fuel spillage from the engine.
  14. Clear the engine of any diagnostic trouble codes (DTCs).