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Home >> Buick >> 2011 >> Lucerne Super >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 4.6L - Repair Instructions >> Repair Instructions >> Fuel Tank Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Identifying Fuel Fill Hose Clamp
    GM1671746Courtesy of GENERAL MOTORS COMPANY
  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (CH 48027) , Fuel Pressure Relief (Without CH 48027) .
  2. Drain the fuel tank. Refer to Fuel Tank Draining .
  3. Remove the left rear wheel house liner. Refer to Rear Wheelhouse Panel Liner Replacement .
  4. Using compressed air, blow any dirt and/or debris from around the fuel fill pipe and evaporative emission (EVAP) line connections.
  5. Loosen the fuel fill hose clamp (1) at the fill pipe.
    6. Fig 2: Identifying Fuel Tank EVAP Recirculation Line Quick Connect Fitting
    GM1671747Courtesy of GENERAL MOTORS COMPANY
  6. Disconnect the fuel fill hose (2) from the fuel fill pipe.
  7. Disconnect the fuel tank EVAP recirculation line quick connect fitting (1) from the fill pipe line. Refer to Plastic Collar Quick Connect Fitting Service .
    8. Fig 3: Identifying Automatic Level Control Sensor Link
    GM1706922Courtesy of GENERAL MOTORS COMPANY
  8. Disconnect the automatic level control sensor link from the left rear suspension control arm, if equipped.
    9. Fig 4: Identifying Electronic Suspension Front Position Sensor Link
    GM1665080Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the left and right electronic position sensor links from the ball studs. (left side shown, right side similar).
    10. Fig 5: Identifying Fuel Fill Pipe Vent Line & Fuel Tank Vapor Line Quick Connect Fitting
    GM1671749Courtesy of GENERAL MOTORS COMPANY
  10. Disconnect the fill pipe vent line (2) and the fuel tank vapor line (3) quick connect fittings from the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service .
    11. Fig 6: Identifying Fuel Feed Rear Pipe Quick Connect Fitting
    GM1671750Courtesy of GENERAL MOTORS COMPANY
  11. Disconnect the fuel feed line quick connect fitting (1) from the chassis line. Refer to Plastic Collar Quick Connect Fitting Service .
    12. Fig 7: Identifying Fuel & EVAP Line Retainer
    GM1671751Courtesy of GENERAL MOTORS COMPANY
  12. Remove the fuel and EVAP line retainer (1) from the side rail.
    13. Fig 8: View Of Fuel Tank Harness Electrical Connector & Clips
    GM1671752Courtesy of GENERAL MOTORS COMPANY
  13. Disconnect the body harness electrical connector from the fuel tank harness electrical connector (1).
  14. Remove the fuel tank harness clips (2, 3) from the rear compartment side rail.
  15. Remove the exhaust system. Refer to Exhaust System Replacement .
    16. Fig 9: View Of Rear Brake Hose Bracket
    GM1671753Courtesy of GENERAL MOTORS COMPANY
  16. Loosen the left and right rear brake hose bracket nut and slide the stud out of the keyhole slot in the side rail. (left side shown, right side similar).
    17. Fig 10: Identifying Rear Shock Bolts
    GM1671754Courtesy of GENERAL MOTORS COMPANY
  17. Remove the rear shock bolts.
  18. Support the front of the vehicle with a jack stand at the engine cradle.
  19. Support the rear suspension crossmember with a suitable adjustable jack.
    20. Fig 11: Locating Rear Suspension Crossmember Bolts
    GM1671755Courtesy of GENERAL MOTORS COMPANY
  20. Remove the rear suspension crossmember bolts.
    21. Fig 12: Identifying Rear Suspension Crossmember
    GM1671757Courtesy of GENERAL MOTORS COMPANY
  21. Using the adjustable jack (1), slowly lower the rear suspension crossmember allowing the crossmember to pivot at the front bolts, until the rear springs can be removed.
  22. Remove the rear coil springs.
    23. Fig 13: Identifying Rear Suspension Crossmember, Fuel Tank Straps & Bolts
    GM1671758Courtesy of GENERAL MOTORS COMPANY
  23. Remove the fuel tank strap bolts.
  24. Remove the fuel tank straps.
  25. Remove the fuel tank.
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