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Home >> Isuzu >> 2004 >> Ascender LS, 5.3 P, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) - 5.3L >> Repair Instructions >> Fuel Tank Replacement >> Removal Procedure
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Removal Procedure

  1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
  2. Drain the fuel tank. Refer to Fuel Tank Draining Procedure .
  3. Remove the frame brace. Refer to Frame Brace Replacement (Short Wheelbase) or Frame Brace Replacement (Long Wheelbase) in Frame and Underbody.
  4. Remove the fuel tank shield, if equipped. Refer to Fuel Tank Shield Replacement (Short Wheelbase) or Fuel Tank Shield Replacement (Long Wheelbase) in Frame and Underbody.
  5. Loosen the fuel hose clamp (1) at the fuel tank.
    Fig 1: Identifying Fuel Pipe/Hose Components
    GM730806Courtesy of GENERAL MOTORS CORP.
  6. Separate the fuel hose (2) from the fuel tank.
    7. Fig 2: View Of Fuel Tank & Related Components
    GM887435Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the fuel tank pressure sensor electrical connector (3).
  8. Disconnect the evaporative emission (EVAP) vent valve electrical connector (2).
    9. Fig 3: Locating Fuel Tank Fittings
    GM899732Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the fuel feed, return and EVAP pipes. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
  10. Cap the fuel and EVAP pipes in order to prevent possible fuel system contamination.
    11. Fig 4: View Of Fuel Tank Straps
    GM887432Courtesy of GENERAL MOTORS CORP.
  11. With the aid of an assistant, support the fuel tank.
    12. NOTE: Refer to Damage to Fuel Tank Straps Notice in Cautions and Notices.
  12. Remove the fuel tank strap bolts (1).
  13. Remove the fuel tank straps (2).
  14. Carefully lower the fuel tank.
    15. Fig 5: View Of Fuel Tank & Related Components
    GM887435Courtesy of GENERAL MOTORS CORP.
  15. Disconnect the fuel sender electrical connector (1).
  16. Remove the fuel tank.
  17. Place the fuel tank in a suitable work area.
  18. If the fuel tank is not being replaced, go to the Installation Procedure.
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