2004 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE

Removal Procedure

    Fig 1: View Of Wheel House Filler Pipe Opening Cover & Bolts
    GM614282Courtesy of GENERAL MOTORS CORP.
  1. Relieve the fuel system pressure. Refer to 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. Remove the wheel house filler pipe opening cover (2).
  5. Disconnect the fuel fill hose from the fuel fill pipe.
  6. Remove the rear suspension support assembly. Refer to Support Replacement (FE1, FE3) or Support Replacement (FE7) in Rear Suspension.
    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: View Of Fuel & EVAP Retainers
    GM684413Courtesy of GENERAL MOTORS CORP.
  9. Remove the fuel and EVAP retainer from the frame.
    10. Fig 5: View Of 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: View Of Fuel Tank, Straps & Bolts
    GM104646Courtesy of GENERAL MOTORS CORP.
  12. Remove the fuel tank strap bolts (4).
  13. Remove the fuel tank (5).
Factory Service Tools

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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.