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Home >> Cadillac >> 2018 >> XTS Livery >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine Controls And Fuel - 3.6L (LFX LF3) - Repair Instructions >> Repair Instructions >> Fuel Tank Replacement (AWD) >> Removal Procedure

Removal Procedure

WARNING:

Refer to Diesel/Gasoline Vapors Warning .

WARNING:

Refer to Safety Glasses Warning .

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. Drain the fuel tank. Fuel Tank Draining (Capless Fill Pipe Non E85) 
  3. Remove the propeller shaft. Propeller Shaft Replacement
  4. Remove the exhaust system. Exhaust Muffler Replacement (AWD)
  5. Remove the two front differential mounting bolts. Differential Carrier Assembly Replacement
  6. GM3336926Courtesy of GENERAL MOTORS COMPANY

    Disconnect the fuel tank fuel pump module wiring harness (1).

  7. GM2203818Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    Do not breathe the air through the EVAP component tubes or hoses. The fuel vapors inside the EVAP components may cause personal injury.

    Disconnect the fuel tank filler vent pipe from the fuel tank filler vent pipe (3). Plastic Collar Quick Connect Fitting Service 

  8. Disconnect the fuel tank filler tube (2) from the fuel tank.
  9. Remove the right front underbody air deflector. Underbody Front Air Deflector Replacement - Right Side
  10. Remove the right rear underbody air deflector. Underbody Rear Air Deflector Replacement - Right Side (AWD)
  11. GM3336887Courtesy of GENERAL MOTORS COMPANY

    Disconnect the evaporative emission purge and fuel feed pipes (1). Plastic Collar Quick Connect Fitting Service 

  12. Disconnect the fuel pressure sensor harness connector (2).
  13. Position a suitable hydraulic lift below the fuel tank.
  14. GM2673852Courtesy of GENERAL MOTORS COMPANY

    Remove both fuel tank strap fasteners (3).

  15. Remove both fuel tank straps (2) from the fuel tank (1).
  16. WARNING:

    To help avoid personal injury, always use jack stands when you are working on or under any vehicle that is supported only by a jack.

    CAUTION:

    When you are jacking or lifting a vehicle at the frame side rails or other prescribed lift points, be certain that the lift pads do not contact the catalytic converter, the brake pipes or the fuel lines. If such contact occurs, vehicle damage or unsatisfactory vehicle performance may result.

  17. With the aid of an assistant, lower the hydraulic lift to remove the fuel tank from the vehicle.
  18. Remove the fuel tank from the hydraulic lift.