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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 128 (Engine Controls And Fuel - 3.6L (LF4) - Repair Instructions (1 Of 3)) >> Repair Instructions >> Fuel Pump Fuel Feed Hose Replacement (MHU) >> Installation Procedure

Installation Procedure

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  1. GM5845773Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Fuel Feed Hose (1) - Install

  2. Fuel Pump Fuel Feed Hose (1) @ Retainer (2) - Engage [3x]
  3. Fuel Pump Fuel Feed Hose (1) - Connect - Plastic Collar Quick Connect Fitting Service 
  4. Connect the electrical connector.
  5. GM5845779Courtesy of GENERAL MOTORS COMPANY

    Place a suitable adjustable jack under the fuel tank.

  6. Fuel Tank (1) - Install
  7. GM5845778Courtesy of GENERAL MOTORS COMPANY

    Fuel Tank Strap (2) - Install [2x]

    8. CAUTION:

    Refer to Fastener Caution .

  8. Fuel Tank Strap Bolt (1) - Install and tighten [5x] - Fastener Specifications
  9. Remove the jack.
  10. GM5845777Courtesy of GENERAL MOTORS COMPANY

    Fuel Tank Vent Hose (5) - Connect - Plastic Collar Quick Connect Fitting Service 

  11. Fuel Tank Filler Evaporative Emission Valve Hose (4) - Connect - Plastic Collar Quick Connect Fitting Service 
  12. Evaporative Emission Canister Purge Hose (3) - Connect - Plastic Collar Quick Connect Fitting Service 
  13. Fuel Tank Filler Hose (2) - Install
  14. Fuel Tank Filler Hose Clamp (1) - Tighten - Fastener Specifications
  15. GM5845776Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump Fuel Feed Hose (2) - Connect - Plastic Collar Quick Connect Fitting Service 

  16. Fuel Tank Vent Valve Hose (1) - Connect - Plastic Collar Quick Connect Fitting Service 
  17. GM5845775Courtesy of GENERAL MOTORS COMPANY

    Retainer (2) - Engage [5x]

  18. Fuel Sender Wiring Harness (1) - Connect [2x]
  19. GM5864749Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Auxiliary Cooler Outlet Pipe (2) - Install

  20. Transmission Fluid Auxiliary Cooler Outlet Pipe (2) - Connect
  21. Retaining Clip (3) - Engage
  22. Transmission Fluid Cooler Pipe Clip (1) - Engage [2x]
  23. GM5865268Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Auxiliary Cooler Inlet Pipe (2) - Install

  24. Transmission Fluid Auxiliary Cooler Inlet Pipe (2) - Connect
  25. Retaining Clip (3) - Engage
  26. Transmission Fluid Cooler Pipe Clip (1) - Engage [2x]
  27. GM5864353Courtesy of GENERAL MOTORS COMPANY

    Transmission Fluid Cooler Inlet and Outlet Pipe (2) @ Transmission Fluid Auxiliary Cooler Outlet Pipe (4) - Connect

  28. Transmission Fluid Cooler Inlet and Outlet Pipe (2) @ Transmission Fluid Auxiliary Cooler Inlet Pipe (1) - Connect
  29. Retaining Clip (3) - Engage [2x]
  30. GM5863854Courtesy of GENERAL MOTORS COMPANY

    Position the propeller shaft (1) in the vehicle.

  31. GM5863691Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  32. Install the 2 propeller shaft bearing support bolts (1) and tighten. Fastener Specifications
  33. GM5863695Courtesy of GENERAL MOTORS COMPANY

    Align the reference mark (3) between the propeller shaft flange (1) and the rear axle pinion flange (2).

  34. GM5863697Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  35. Install the 3 rear propeller shaft nuts (2) and the 3 rear propeller shaft bolts (1).
  36. Tighten the 3 rear propeller shaft bolts (1). Fastener Specifications
  37. GM5863694Courtesy of GENERAL MOTORS COMPANY

    Align the reference mark (2) between the propeller shaft flange (3) and the output flange (1) of the transmission.

  38. GM5863696Courtesy of GENERAL MOTORS COMPANY

    If NEW threaded components are being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded components are reused, prepare the threaded components using the following steps:

    1. Remove any loose cured adhesive from the external threads of the components using a lint free cloth.
    2. Thread the cleaned components into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the components. Adhesives, Fluids, Lubricants, and Sealers
    4. Apply liquid thread locking adhesive in a strip along half of the length of the external threads, starting at the tip, just prior to installation.
  39. Install the 3 front propeller shaft nuts (1) and the 3 front propeller shaft bolts (2).
  40. Tighten the 3 front propeller shaft bolts (2). Fastener Specifications
  41. GM5867371Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount (2) - Install

    42. NOTE:

    For proper bolt alignment, loosely install all mount bolts prior to tightening to specifications.

  42. Transmission Mount Bolt (1) - Loosely install [2x]
  43. GM5867370Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount Bracket Bolt (1) - Loosely install [4x]

  44. GM5867371Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount Bolt (1) - Tighten [2x] - Fastener Specifications

  45. GM5867370Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount Bracket Bolt (1) - Tighten [4x] - Fastener Specifications

  46. Remove the jack stand.
  47. GM5334717Courtesy of GENERAL MOTORS COMPANY

    Floor Panel Number 2 Cross Bar Reinforcement (2) - Install

  48. Floor Panel Number 2 Cross Bar Reinforcement Bolt (1) - Install and tighten [4x] - Fastener Specifications
  49. GM5865888Courtesy of GENERAL MOTORS COMPANY

    Exhaust Intermediate Underbody Heat Shield (2) - Install

  50. Exhaust Heat Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
  51. GM5865329Courtesy of GENERAL MOTORS COMPANY

    Catalytic Converter Gasket (2) - Install NEW

  52. With the aid of an assistant, install the exhaust muffler (1).
  53. GM5865300Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler Hanger Bracket Nut (1) - Install and tighten [4x] - Fastener Specifications

  54. GM5865293Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  55. GM5865287Courtesy of GENERAL MOTORS COMPANY

    Electrical Connector (1) - Connect

  56. GM5406632Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Install [2x]

  57. GM5406578Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Install [2x]

  58. GM5865271Courtesy of GENERAL MOTORS COMPANY

    Exhaust Pipe Clamp (1) - Tighten [2x] - Fastener Specifications

  59. GM5865265Courtesy of GENERAL MOTORS COMPANY

    Catalytic Converter Nut (1) - Install and tighten [2x] - Fastener Specifications

  60. GM5400756Courtesy of GENERAL MOTORS COMPANY

    Floor Panel Reinforcement (2) - Install

  61. Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Install and tighten [6x] - Fastener Specifications
  62. GM5854893Courtesy of GENERAL MOTORS COMPANY

    Underbody Rear Air Deflector- Left Side (5) - Install

  63. Transmission Fluid Cooler Pipe Bracket Bolt- Left Side (3) - Install and tighten [2x] - Fastener Specifications
  64. Underbody Rear Air Deflector Nut- Left Side (2) - Install and tighten [5x] - Fastener Specifications
  65. Underbody Front Air Deflector Bolt- Left Side (1) - Install and tighten [6x] - Fastener Specifications
  66. GM5839256Courtesy of GENERAL MOTORS COMPANY

    Underbody Rear Air Deflector- Right Side (5) - Install

  67. Transmission Fluid Cooler Pipe Bracket Bolt- Right Side (3) - Install and tighten [2x] - Fastener Specifications
  68. Underbody Rear Air Deflector Nut- Right Side (2) - Install and tighten [5x] - Fastener Specifications
  69. Underbody Front Air Deflector Bolt- Right Side (1) - Install and tighten [6x] - Fastener Specifications
  70. GM5400642Courtesy of GENERAL MOTORS COMPANY

    Underbody Rear Air Deflector- Right Side (5) - Install

  71. Underbody Rear Air Deflector Nut- Right Side (3) - Install and tighten [3x] - Fastener Specifications
  72. Underbody Rear Air Deflector Bolt- Right Side (2) - Install and tighten [3x] - Fastener Specifications
  73. Underbody Rear Air Deflector Nut- Right Side (4) - Install and tighten [2x] - Fastener Specifications
  74. Rear Wheelhouse Liner Bolt- Right Side (1) - Install and tighten - Fastener Specifications
  75. GM5400553Courtesy of GENERAL MOTORS COMPANY

    Underbody Rear Air Deflector- Left Side (5) - Install

  76. Underbody Rear Air Deflector Nut- Left Side (2) - Install and tighten [3x] - Fastener Specifications
  77. Underbody Rear Air Deflector Bolt- Left Side (3) - Install and tighten [3x] - Fastener Specifications
  78. Underbody Rear Air Deflector Nut- Left Side (4) - Install and tighten [2x] - Fastener Specifications
  79. Rear Wheelhouse Liner Bolt- Left Side (1) - Install and tighten - Fastener Specifications
  80. GM5395705Courtesy of GENERAL MOTORS COMPANY

    Rear Tire Front Air Deflector- Left Side and Right Side (2) - Install [2x]

  81. Rear Tire Front Air Deflector Bolt- Left Side and Right Side (1) - Install and tighten [4x] - Fastener Specifications
  82. Lower the vehicle.
  83. Refill the fuel tank.
  84. Check the transmission fluid level. Transmission Fluid Level and Condition Check
  85. Inspect for transmission fluid leaks. Fluid Leak Diagnosis
  86. Pressurize the fuel system and inspect for leaks.
  87. Inspect the exhaust system for leaks.
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