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HOMESERVICE MANUALSBUICK2005LESABRE LIMITED, 4T65E/M15REPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - INTRODUCTIONREPAIR INSTRUCTIONSFUEL TANK REPLACEMENTREMOVAL PROCEDURE
2005 Buick LeSabre Limited, 4T65E/M15

Removal Procedure

2005 Buick LeSabre Limited, 4T65E/M15SECTION 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. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
    4. Fig 1: Removing/Installing Fuel Cap & Fuel Filler Tube Sealing Ring
    GM891295Courtesy of GENERAL MOTORS CORP.
  4. Remove the wheel house filler pipe opening cover (5).
  5. Disconnect the fuel fill hose (4) from the fuel fill pipe (3).
  6. Remove the rear suspension support assembly. Refer to Support Replacement - Rear in Frame and Underbody.
    7. Fig 2: View Of Fuel Filter Quick Connections
    GM483018Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the fuel feed pipe (4) and the fuel return pipe (1). Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
    8. Fig 3: View Of EVAP Pipe To Canister
    GM104621Courtesy of GENERAL MOTORS CORP.
  8. Disconnect the evaporative emission (EVAP) pipe (2) from the EVAP canister.
    9. Fig 4: Removing/Installing Fuel & EVAP Retainer At Frame
    GM684413Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel and EVAP retainer from the frame.
    10. Fig 5: Disconnecting/Reconnecting Fuel Tank Electrical Connector
    GM684415Courtesy of GENERAL MOTORS CORP.
  10. Disconnect the fuel tank electrical connector.
  11. Disconnect the fuel tank electrical harness from the retainers.
    12. Fig 6: Removing/Installing Fuel Tank Strap Bolts & Fuel Tank
    GM104646Courtesy of GENERAL MOTORS CORP.
  12. Remove the fuel tank strap bolts (4).
  13. Remove the fuel tank (5).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.