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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Engine Controls And Fuel - 3.6L (LF4) - Repair Instructions (2 Of 3)) >> Repair Instructions >> Fuel Rail Pressure Sensor Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM5869694Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    To tighten or loosen the fuel injection fuel rail fuel pressure sensor, apply force ONLY to the attached hexagon. Applying force to the plastic housing of the sensor may damage the sensor.

    NOTE:

    Ensure the fuel rail threads are clean and free of any excess fuel, or the fuel injection fuel rail fuel pressure sensor will NOT seal properly.

    Lubricate the threads and sealing surface of the fuel rail pressure sensor (1) with one drop of clean engine oil. Adhesives, Fluids, Lubricants, and Sealers

  2. Install the fuel rail pressure sensor (1) and hand tighten.
  3. Remove the fuel rail pressure sensor (1) from the fuel injection fuel rail (2) and re-lubricate with one drop of clean engine oil.
    4. CAUTION:

    Refer to Component Fastener Tightening Caution .

  4. Fuel Rail Pressure Sensor (1) @ Fuel Injection Fuel Rail (2) - Install and tighten - Fastener Specifications
  5. Connect the fuel rail pressure sensor (1) electrical connector.
  6. GM5869727Courtesy of GENERAL MOTORS COMPANY

    Engine Rear Noise Shield (1) - Install

  7. GM4044075Courtesy of GENERAL MOTORS COMPANY

    Fuel Pipe Shield (1) - Install

  8. GM5869276Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness (3) - Install

  9. Retainer (2) - Install [3x]
    10. CAUTION:

    Refer to Fastener Caution .

  10. Engine Rear Noise Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
  11. GM4044046Courtesy of GENERAL MOTORS COMPANY

    Engine Rear Noise Shield Bolt (1) - Install and tighten - Fastener Specifications

  12. GM5524604Courtesy of GENERAL MOTORS COMPANY

    Install the plenum front panel (3) to the dash panel upper insulator (2).

    13. NOTE:

    This is a push nut.

  13. Plenum Panel Nut (1) - Install [9x]
  14. GM5865881Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel (1) - Install

  15. GM5865879Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel Bolt (1) - Install and tighten [4x] - Fastener Specifications

  16. Plenum Front Panel Nut (2) - Install and tighten [3x]

    - Fastener Specifications

  17. GM5422039Courtesy of GENERAL MOTORS COMPANY

    Plenum Front Panel Nut (1) - Install and tighten [3x] - Fastener Specifications

  18. Plenum Front Panel Bolt (2) - Install and tighten [3x] - Fastener Specifications
  19. Install the forward lamp wiring harness extension (3) into the plenum front panel.
  20. Connect the electrical connector.
  21. GM5499583Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Deflector Water Deflector (1) - Install

  22. GM5499581Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Deflector Water Deflector Retainer (1) - Install [2x]

  23. GM5420344Courtesy of GENERAL MOTORS COMPANY

    Install the windshield wiper system module (2) in the vehicle.

  24. Windshield Wiper System Module Bolt (1) - Install and tighten [2x] Fastener Specifications
  25. Connect the windshield wiper motor electrical connector.
  26. Connect the battery negative cable. - Battery Negative Cable Disconnection and Connection
  27. GM5420286Courtesy of GENERAL MOTORS COMPANY

    Windshield Wiper System Module Shield (1) - Install

  28. GM5417442Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel (2) - Install

    1. Install the air inlet grille panel (2) between both hood hinges.
    2. Connect the windshield washer nozzle hose to the windshield washer pump hose.
    3. Air Inlet Grille Panel Retainer (1) - Install [6x]
  29. GM5862927Courtesy of GENERAL MOTORS COMPANY

    Front Compartment Side Sight Shield (2) - Install

  30. Front Compartment Side Sight Shield Retainer (1) - Install [3x]
  31. GM5865291Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel Extension (2) - Install

  32. Air Inlet Grille Panel Retainer (1) - Install [2x]
  33. GM5421986Courtesy of GENERAL MOTORS COMPANY

    Install the hood rear outer air inlet seal (2) to the left and right side.

  34. Install the 2 hood rear outer air inlet seal retainer (1) to the left and right side.
  35. GM5417116Courtesy of GENERAL MOTORS COMPANY

    Air Inlet Grille Panel Extension (1) - Install [2x]

    1. Install the air inlet grille panel extension (1).
    2. Remove the masking tape from the top edge of the service part.
    3. Using a 50/50 mixture of isopropyl alcohol and clean drinkable water with a clean towel, remove any left over adhesive residue from the masking tape.
  36. GM5325063Courtesy of GENERAL MOTORS COMPANY

    Windshield Wiper Arm (3) - Install [2x]

    1. Clean the windshield wiper transmission pivot shaft splines with a soft wire brush before installing the windshield wiper arm (3).
    2. Position the windshield wiper arm (3) on the windshield wiper transmission pivot shaft.
    3. Windshield Wiper Arm Nut (2) - Install and tighten Fastener Specifications
    4. Windshield Wiper Arm Finish Cap (1) - Install
  37. GM5416557Courtesy of GENERAL MOTORS COMPANY

    If required, realign the windshield wipers to their respective alignment circles (1) on the windshield.

    1. Lubricate the windshield with clean washer fluid.
    2. Run the windshield wipers for two complete cycles then turn off the windshield wipers.
    3. Ensure the windshield wipers are in the full park position.
    4. Inspect the windshield wipers for proper position to the alignment circles (1) on the windshield.
  38. Pressurize the fuel system and inspect for leaks.
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