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Home >> Cadillac >> 2010 >> DTS 4.6 Y >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System & Fuel System - 4.6L - Repair Instructions - >> Repair Instructions >> Fuel Tank Replacement >> Installation Procedure

Installation Procedure

    Fig 1: View Of Fuel Pump Module
    GM1671762Courtesy of GENERAL MOTORS CORP.
  1. Place a NEW fuel pump module O-ring seal onto the fuel tank.
    2. NOTE: the bucket must be slightly during installation to avoid bending the fuel level sensor float arm.
  2. Tilt the module toward the rear of the fuel tank to allow the fuel level sensor float arm to clear the tank opening. Install the module into the fuel tank.
  3. Lower the module assembly into the tank.
  4. Install the module lock ring, and move it into position on the top of the module.
    5. Fig 2: Special Tool On Lock Ring
    GM1671830Courtesy of GENERAL MOTORS CORP.
  5. Install the J 45722  to the lock ring. See Special Tools .
    6. Fig 3: Lock Ring
    GM1642096Courtesy of GENERAL MOTORS CORP.
    NOTE: Always replace the fuel sender seal when installing the fuel sender assembly. Replace the lock ring if necessary. Do not apply any type of lubrication in the seal groove.
    Ensure the lock ring is installed with the correct side facing upward. A correctly installed lock ring will only turn in a clockwise direction.
  6. Using the J 45722  and a breaker bar, rotate the fuel pump module lock ring clockwise until the ring is locked into place on the fuel tank. See Special Tools .
  7. Remove the J 45722  . See Special Tools .
    8. Fig 4: Fuel Feed Line
    GM1671760Courtesy of GENERAL MOTORS CORP.
  8. Install the fuel feed line.
  9. Connect the fuel feed line quick connect fitting to the module. Refer to Plastic Collar Quick Connect Fitting Service .
  10. Install the fuel feed line to the retaining feature in the fuel tank.
    11. Fig 5: Identifying Fuel Tank Electrical Harness Connectors
    GM1671759Courtesy of GENERAL MOTORS CORP.
  11. Install the electrical harness (1).
  12. Connect the fuel tank electrical harness connectors to the module and pressure sensor.
    13. Fig 6: View Of Fuel Tank
    GM1671758Courtesy of GENERAL MOTORS CORP.
  13. Place the fuel tank onto the rear suspension crossmember.
    14. Fig 7: Identifying Adjustable Jack
    GM1671757Courtesy of GENERAL MOTORS CORP.
  14. Install the fuel tank straps.
    15. CAUTION: Refer to Fastener Caution .
  15. Install the fuel tank strap bolts.

    Tighten:  Tighten the bolts to 46 N.m (34 lb ft).

  16. Install the rear coil springs while slowly raising the rear suspension crossmember using the adjustable jack (1).
    17. Fig 8: Locating Rear Suspension Crossmember Bolts
    GM1671755Courtesy of GENERAL MOTORS CORP.
  17. Install the rear suspension crossmember bolts.

    Tighten:  Tighten the bolts to 191 N.m (141 lb ft).

  18. Remove the adjustable jack from the rear suspension crossmember.
  19. Remove the jack stand from the front of the vehicle.
    20. Fig 9: Rear Shock Bolts
    GM1671754Courtesy of GENERAL MOTORS CORP.
  20. Install the rear shock bolts.

    Tighten:  Tighten the bolts to 25 N.m (18 lb ft).

    21. Fig 10: View Of Fuel Tank Harness Electrical Connector & Clips
    GM1671752Courtesy of GENERAL MOTORS CORP.
  21. Connect the body harness electrical connector to the fuel tank harness electrical connector (1).
  22. Install the fuel tank harness clips (2, 3) to the rear compartment side rail.
    23. Fig 11: Identifying Fuel & EVAP Line Retainer
    GM1671751Courtesy of GENERAL MOTORS CORP.
  23. Install the fuel and EVAP line retainer (1) to the side rail.
    24. Fig 12: Identifying Fuel Feed Rear Pipe Quick Connect Fitting
    GM1671750Courtesy of GENERAL MOTORS CORP.
  24. Connect the fuel feed line quick connect fitting (1) to the chassis line. Refer to Plastic Collar Quick Connect Fitting Service .
    25. Fig 13: Identifying Fuel Fill Pipe Vent Line & Fuel Tank Vapor Line Quick Connect Fittings
    GM1671749Courtesy of GENERAL MOTORS CORP.
  25. Connect the fill pipe vent line (2) and the fuel tank vapor line (3) quick connect fittings to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service .
    26. Fig 14: View Of Rear Brake Hose Bracket
    GM1671753Courtesy of GENERAL MOTORS CORP.
  26. Install the left and right rear brake hose bracket studs into the keyhole slots. Tighten the nuts.

    Tighten:  Tighten the nut to 10 N.m (89 lb in).

  27. Install the exhaust system. Refer to Exhaust System Replacement .
    28. Fig 15: Identifying Electronic Suspension Front Position Sensor Link
    GM1665080Courtesy of GENERAL MOTORS CORP.
  28. Connect the left and right electronic position sensor links to the ball studs (1). RPO F55 shown, F38 similar.
    29. Fig 16: Automatic Level Control Sensor Link
    GM1706922Courtesy of GENERAL MOTORS CORP.
  29. Connect the automatic level control sensor link to the left rear suspension control arm, if equipped.
    30. Fig 17: Identifying Fuel Tank EVAP Recirculation Line Quick Connect Fitting
    GM1671747Courtesy of GENERAL MOTORS CORP.
    NOTE: Clean the fill pipe or any dirt or debris. Ensure the fill pipe is installed to the original depth to the fill hose. The fill pipe bead must be inserted into the hose past the clamp position.
  30. Connect the fuel tank EVAP recirculation line quick connect fitting (1) to the fill pipe line. Refer to Plastic Collar Quick Connect Fitting Service .
  31. Connect the fuel fill hose (2) to the fuel fill pipe.
    32. Fig 18: Identifying Fuel Fill Hose Clamp
    GM1671746Courtesy of GENERAL MOTORS CORP.
  32. Tighten the fuel fill hose clamp (1) at the fill pipe.

    Tighten:  Tighten the clamp to 4 N.m (35 lb in).

  33. Install the left rear wheel house liner. Refer to Rear Wheelhouse Panel Liner Replacement .
  34. Fill the fuel tank.
  35. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  36. Perform the following procedure in order to inspect for leaks:
    1. Turn ON the ignition, with the engine OFF for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition, with the engine OFF.
    4. Inspect for fuel leaks.
  37. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
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