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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Engine Controls And Fuel - 6.0L (L96) - Repair Instructions) >> Repair Instructions >> Fuel Tank Replacement (Rear Tank) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Vapor Line Quick Connect Fittings (Rear Tank)
    GM1372821Courtesy of GENERAL MOTORS COMPANY
  1. If the fuel tank was replaced perform the following steps, otherwise proceed to step 14.
  2. Install the NEW fuel tank module seal onto the fuel tank.
  3. Pull the vent line in the fuel tank up as far as possible for ease of installation.
  4. Position the fuel tank module part way into the fuel tank.
  5. Connect the quick connect fittings to the module cover. Refer to Plastic Collar Quick Connect Fitting Service .
  6. Install the fuel tank module into the fuel tank.
  7. Place the lock ring into position.
    8. Fig 2: Rotating Lock Ring
    GM1642096Courtesy of GENERAL MOTORS COMPANY
  8. Rotate the lock ring counterclockwise using the J-45722  wrench.
    9. Fig 3: Fuel Tank EVAP Lines
    GM1705754Courtesy of GENERAL MOTORS COMPANY
  9. Install the EVAP lines to the fuel tank.
    10. Fig 4: EVAP Line Clips
    GM1705753Courtesy of GENERAL MOTORS COMPANY
  10. Connect the EVAP line quick connect fittings to the fuel tank module. Refer to Plastic Collar Quick Connect Fitting Service .
  11. Install the EVAP lines to the clip (3).
  12. Install the EVAP line to the clip (2) and close the clip.
  13. Install the EVAP line to the clip (1) on the fuel tank.
    14. Fig 5: Sending Unit Electrical Connector (Rear Tank)
    GM1238175Courtesy of GENERAL MOTORS COMPANY
  14. With the aid of an assistant, install the tank onto the jack.
  15. Partially raise the fuel tank.
  16. Connect the chassis harness electrical connector (2) to the fuel tank module.
    17. Fig 6: Fuel And EVAP Intermediate Lines At Fuel Tank
    GM1224396Courtesy of GENERAL MOTORS COMPANY
  17. Remove the caps from the fuel and EVAP lines.
  18. Install the fuel and EVAP intermediate lines.
    19. Fig 7: Fuel And EVAP Lines Quick Connect Fittings
    GM1705751Courtesy of GENERAL MOTORS COMPANY
  19. Connect the fuel and EVAP intermediate lines to the rear tank. Refer to Plastic Collar Quick Connect Fitting Service .
    20. Fig 8: Fuel Tank And Straps
    GM1224381Courtesy of GENERAL MOTORS COMPANY
  20. With the aid of an assistant, completely raise the rear tank.
  21. Install the fuel tank straps.
    22. CAUTION:

    Refer to Fastener Caution .

  22. Install the fuel tank strap bolts.

    Tighten 

    Tighten the bolts to 40 N.m (30 lb ft).

  23. Remove the adjustable jack from under the fuel tank.
    24. Fig 9: Fuel Pressure Sensor Electrical Connector
    GM1372719Courtesy of GENERAL MOTORS COMPANY
  24. Connect the chassis harness electrical connector (1) to the fuel pressure sensor.
    25. Fig 10: Fuel And EVAP Intermediate Lines At Fuel Tank
    GM1372710Courtesy of GENERAL MOTORS COMPANY
  25. Connect the fuel and EVAP intermediate line quick connect fittings to the front tank. Refer to Plastic Collar Quick Connect Fitting Service .
    26. Fig 11: EVAP Canister And Quick Connect Fittings
    GM1372543Courtesy of GENERAL MOTORS COMPANY
  26. Connect the rear fuel tank EVAP line quick connect fittings to the EVAP canister. Refer to Plastic Collar Quick Connect Fitting Service .
    27. Fig 12: Spare Tire Hoist Crossmember And Bolts
    GM1705750Courtesy of GENERAL MOTORS COMPANY
  27. Install the spare tire hoist crossmember and bolts.

    Tighten 

    Tighten the bolts to 50 N.m (37 lb ft).

  28. Install the rear exhaust insulator.
    29. Fig 13: Fuel Hoses And Clamp
    GM1704321Courtesy of GENERAL MOTORS COMPANY
  29. Install the fuel fill hose (1, 3) to the fuel tank.
  30. Tighten the fuel fill hose clamp (2) at the fuel tank.

    Tighten 

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

  31. Lower the vehicle.
    32. Fig 14: Spare Tire And Stowage Lock Cylinder
    GM1704585Courtesy of GENERAL MOTORS COMPANY
  32. Install the spare tire.
  33. Install the spare tire stowage lock cylinder.
    34. Fig 15: Fuel Tank Filler Housing Components
    GM300318Courtesy of GENERAL MOTORS COMPANY
  34. Install the fuel tank filler housing.
  35. Install the fuel tank filler housing to fuel tank fill pipe bolts.

    Tighten 

    Tighten the bolts to 2.3 N.m (20 lb in).

    36. Fig 16: Fuel Tank Filler Housing To Body Screws And Retainer
    GM853731Courtesy of GENERAL MOTORS COMPANY
  36. Install the fuel tank filler housing to body TORX® screws (1) and retainer (2).

    Tighten 

    Tighten the screws to 2.3 N.m (20 lb in).

  37. Install the spare wheel heat shield. Refer to Spare Wheel Heat Shield Replacement
  38. Refill the fuel tank.
  39. Install the fuel fill cap.
  40. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Dual Battery)Battery Negative Cable Disconnection and Connection (Single Battery) .
  41. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.
  42. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
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