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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L - Repair Instructions >> Repair Instructions >> Fuel Tank Replacement (Pickup) >> Removal Procedure

Removal Procedure

    Fig 1: Identifying Fuel Filler Components
    GM300318Courtesy of GENERAL MOTORS COMPANY
  1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief .
  2. Drain the fuel tank. Refer to Fuel Tank Draining (Front Tank) , Fuel Tank Draining (Rear Tank) .
  3. Disconnect the fuel fill pipe from the fuel fill pipe housing.
  4. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Fig 2: Fuel Tank Ground Strap & Bolt
    GM420291Courtesy of GENERAL MOTORS COMPANY
  6. Disconnect the fuel fill pipe ground strap.
  7. Fig 3: Evaporative Emission Canister
    GM303981Courtesy of GENERAL MOTORS COMPANY
  8. Remove the evaporative emission (EVAP) canister. Refer to Evaporative Emission Canister Replacement (Pickup) .
  9. Fig 4: Chassis Fuel Pipes
    GM303903Courtesy of GENERAL MOTORS COMPANY
  10. Disconnect the rear fuel return pipe and the rear fuel feed pipe at the chassis fuel pipes. Refer to Plastic Collar Quick Connect Fitting Service .
  11. Cap the fuel and EVAP pipes in order to prevent possible fuel system contamination.
  12. Fig 5: Fuel Sender And The Fuel Pressure Sensor Electrical Connectors
    GM373155Courtesy of GENERAL MOTORS COMPANY
  13. Disconnect the fuel sender and the fuel pressure sensor electrical connectors.
  14. Fig 6: View Of Fuel Tank Shield & Bolts
    GM626413Courtesy of GENERAL MOTORS COMPANY
  15. Remove the fuel tank shield.
  16. Fig 7: View Of Fuel Tank & Straps
    GM300138Courtesy of GENERAL MOTORS COMPANY
  17. With the aid of an assistant, support the fuel tank.
  18. Remove the fuel tank strap attaching bolts.
  19. Remove the fuel tank straps.
  20. Remove the fuel tank.
  21. Place the fuel tank in a suitable work area.
  22. Fig 8: View Of EVAP Hoses/Pipes (Canister/Fuel Tank)
    GM396067Courtesy of GENERAL MOTORS COMPANY
  23. Remove the fuel feed pipe (4) and the fuel return pipe (5) from the fuel sender (2) and the retaining clips (6).
  24. Remove the EVAP pipe (1) from the fuel sender (2), the fuel tank roll over valve (3), and the retaining clips (6).
  25. Remove the fuel sender assembly from the fuel tank. Refer to Fuel Sender Assembly Replacement .
  26. Remove the fuel fill and vent hose and pipe assembly from the fuel tank.