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Home >> Chevrolet >> 2011 >> Impala LT >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 3.5L - Repair Instructions >> Repair Instructions >> Fuel Tank Replacement (NU6) >> Removal Procedure

Removal Procedure

NOTE: Clean the fuel and evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the lines in order to avoid possible system contamination.
    Fig 1: Fuel Tank Clamp, Fuel Tank Hose and Fuel Tank
    GM1554559Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief (Without CH 48027)  or Fuel Pressure Relief (CH 48027) .
  2. Drain the fuel tank. Refer to Fuel Tank Draining (E-85) .
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Loosen the fuel fill hose clamp (1) at the fuel tank.
  5. Remove the fuel tank fill hose (2) from the fuel tank (3).
  6. Disconnect the EVAP vent pipe quick connect fitting from the fill pipe EVAP vent pipe quick connect fitting. Plastic Collar Quick Connect Fitting Service .
    7. Fig 2: EVAP Canister Vent Solenoid Valve And EVAP Emission Canister Hose
    GM1618911Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the EVAP vent solenoid hose on the tank from the vent valve solenoid hose.
    8. Fig 3: View Of Fuel Feed, EVAP and Fuel Tank Lines
    GM1554561Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the fuel feed (3), and the EVAP (4) lines from the fuel tank lines (1, 2). Refer to Plastic Collar Quick Connect Fitting Service .
  9. Support the exhaust system.
  10. Remove the rubber exhaust pipe hangers in order to allow the exhaust system to drop slightly.
    11. Fig 4: View Of Fuel Tank Shield
    GM1554563Courtesy of GENERAL MOTORS CORP.
  11. Remove the fuel tank shield retainers (3).
  12. Remove the fuel tank shield (2).
    13. Fig 5: View Of Fuel Tank & Straps
    GM1554562Courtesy of GENERAL MOTORS CORP.
    CAUTION: Do not bend the fuel tank straps. Bending the fuel tank straps may damage the straps.
  13. Support the fuel tank with a suitable adjustable jack.
  14. Remove the fuel tank strap bolts (3).
  15. Using the jack lower the fuel tank.
    16. Fig 6: View Of Fuel Sender Jumper Harness Electrical Connector
    GM1575953Courtesy of GENERAL MOTORS CORP.
  16. Disconnect the fuel tank wiring harness electrical connector from the underbody connector.
  17. Remove the fuel tank and place the tank in a suitable work area.
    18. Fig 7: View Of Fuel Feed Line & EVAP Line
    GM1906518Courtesy of GENERAL MOTORS CORP.
    NOTE: Note the routing of the lines for installation.
  18. Disconnect the EVAP line (1) quick connect fittings from the fuel tank module and the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service .
  19. Remove the EVAP line assembly (1).
  20. Disconnect the fuel feed line (2) from the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .
  21. Disengage the fuel feed line from the retaining feature (3) built into the fuel tank and remove the fuel line (2).
    22. Fig 8: View Of Fuel Tank Wiring Harness & Electrical Connectors
    GM1906519Courtesy of GENERAL MOTORS CORP.
  22. Disconnect the fuel tank wiring harness (1) electrical connectors from the fuel tank module and the fuel pressure sensor.
  23. Remove the EVAP canister. Refer to Evaporative Emission Canister Replacement (NC7)  or Evaporative Emission Canister Replacement (NU6) .
  24. Remove the insulator pads from the fuel tank. Note the location of the insulator pads for installation.
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