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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Frame And Underbody) >> Repair Instructions >> Rear Suspension Cradle Removal and Installation (LSY RWL) >> Installation Procedure

Installation Procedure

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  1. GM5668915Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the rear suspension cradle is securely attached to the jack/support stand.

    Raise the rear suspension cradle 6 - 8 inches from the vehicle and install available electrical connectors and retainers.

  2. Rear Suspension Cradle (1) - Install
  3. GM5893568Courtesy of GENERAL MOTORS COMPANY

    Install the 2 CH-51034 - A  Cradle Alignment Pins (1) to align the rear cradle to the body.

  4. GM5893555Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    Rear Suspension Cradle Rear Bolt (1) - Install NEW and tighten [2x] - Fastener Specifications 

  5. GM5893548Courtesy of GENERAL MOTORS COMPANY

    Temporarily install the 2 OLD rear cradle front bolts (1).

  6. Remove the lift table from under the rear suspension cradle.
  7. GM5336324Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Bracket- Left Side and Right Side (2) - Install [2x]

    8. CAUTION:

    Refer to Fastener Caution .

  8. Rear Suspension Bracket Nut- Left Side and Right Side (1) - Install and tighten [4x] - Fastener Specifications
  9. GM5590590Courtesy of GENERAL MOTORS COMPANY

    Place the jack stand (1) under the rear differential carrier for support.

  10. GM5590838Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Position the block of wood (1) and the suitable jack stand (2) between the frame of the vehicle and the rear suspension bracket on the right side.

  11. GM5591038Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Left side shown, right side similar.
    • DO NOT raise the vehicle higher than necessary.

    Using the block of wood and the suitable jack stand (1), raise the vehicle just enough to reposition the hoist pad (2) from under the vehicle.

  12. GM5893529Courtesy of GENERAL MOTORS COMPANY

    Rear Suspension Cradle Front Bolt- Right Side (1) - Remove and DISCARD

  13. GM5442507Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Bracket- Right Side (2) - Install

  14. Rear Suspension Cradle Front Bolt- Right Side (3) - Install NEW and hand tighten
  15. Rear Suspension Bracket Bolt- Right Side (4) - Install and tighten - Fastener Specifications
  16. Rear Suspension Bracket Bolt- Right Side (1) - Install and tighten - Fastener Specifications
  17. Rear Suspension Cradle Front Bolt (3)- Right Side - Tighten - Fastener Specifications

    DO NOT ATTEMPT OTHER REPAIRS WITH JACK STANDS IN PLACE.

  18. GM5591038Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Reposition the hoist lift pad (2) back underneath the right side of the vehicle.

  19. Using the jack stand (1) and the block of wood, slowly lower the vehicle back on the hoist pad (2).
  20. GM5590838Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Remove the jack stand (2) and the block of wood (1) from underneath the right side of vehicle.

  21. GM5590838Courtesy of GENERAL MOTORS COMPANY

    Position the block of wood (1) and the suitable jack stand (2) between the frame of the vehicle and the rear suspension bracket on the left side.

  22. GM5591038Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT raise the vehicle higher than necessary.

    Using the block of wood and the suitable jack stand (1), raise the vehicle just enough to reposition the hoist pad (2) from under the vehicle.

  23. GM5893537Courtesy of GENERAL MOTORS COMPANY

    Rear Suspension Cradle Front Bolt- Left Side (1) - Remove and DISCARD

  24. GM5442507Courtesy of GENERAL MOTORS COMPANY

    Rear Suspension Bracket- Front- Left Side (2) - Install

  25. Rear Suspension Cradle Front Bolt- Left Side (3) - Install NEW and hand tighten
  26. Rear Suspension Bracket Bolt- Left Side (4) - Install and tighten - Fastener Specifications
  27. Rear Suspension Bracket Bolt- Left Side (1) - Install and tighten - Fastener Specifications
  28. Rear Suspension Cradle Front Bolt- Left Side (3) - Tighten - Fastener Specifications

    DO NOT ATTEMPT OTHER REPAIRS WITH JACK STANDS IN PLACE.

  29. GM5591038Courtesy of GENERAL MOTORS COMPANY

    Reposition the hoist lift pad (2) back underneath the vehicle.

  30. Using the jack stand (1) and the block of wood, slowly lower the vehicle back on the hoist pad (2).
  31. GM5590838Courtesy of GENERAL MOTORS COMPANY

    Remove the jack stand (2) and the block of wood (1) from underneath the right side of vehicle.

  32. GM5590590Courtesy of GENERAL MOTORS COMPANY

    Remove the jack stand (1) from the rear differential carrier.

  33. GM5504138Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Lower Control Arm- Left Side and Right Side (1) - Install [2x]

  34. GM5504137Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Lower Control Arm Inner Bolt- Left Side and Right Side (3) - Install NEW [2x]

  35. Rear Suspension Lower Control Arm Inner Washer- Left Side and Right Side (2) - Install [2x]
    36. NOTE:

    The final torque on the rear suspension lower control arm inner nut (1) is to be applied during the rear camber setting procedure.

  36. Rear Suspension Lower Control Arm Inner Nut- Left Side and Right Side (1) - Install and hand tighten [2x]
  37. GM5504136Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Correctly orient the rear coil spring as noted upon removal of the rear suspension lower control arm.
    • Left side shown, right side similar.

    Rear Coil Spring- Left Side and Right Side (1) - Install [2x]

  38. Support the rear suspension lower control arms (2) with an appropriate jack stands.
  39. Slowly lower the vehicle to apply tension on the rear coil springs (1) and rotate the rear suspension lower control arms (2) and align the rear suspension lower control arms (2) with the rear suspension knuckles.
  40. GM5337541Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Lower Control Arm Outer Bolt- Left Side and Right Side (3) - Install NEW [2x]

  41. Using the jack stands, raise the rear lower control arms enough to aid in the installation of the of the rear suspension lower control arm outer bolts.
  42. Rear Suspension Lower Control Arm Outer Nut- Left Side and Right Side (1) - Install [2x]
  43. Rear Suspension Lower Control Arm Outer Bolt- Left Side and Right Side (3) - Tighten [2x] - Fastener Specifications
  44. GM5335007Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Shock Absorber Bolt- Left Side and Right Side (2) @ Rear Suspension Lower Control Arm (3) - Install NEW and tighten [2x] - Fastener Specifications

  45. Remove the jack stands from beneath the rear suspension lower control arms.
  46. GM5334525Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Lower Control Arm Cover- Left Side and Right Side (2) - Install [2x]

  47. Install the 8 left and right side rear spring pins (1).
  48. GM5420645Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Install the left and right side rear brake caliper and brackets (2).

  49. Prepare the 4 left and right side rear caliper bracket bolts (1) for installation as follows:
    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. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  50. Rear Brake Caliper Bracket Bolt- Left Side and Right Side (1) - Install and tighten [4x] - Fastener Specifications
  51. GM5316676Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Wheel Speed Sensor- Left Side and Right Side (2) @ Rear Suspension Knuckle - Install [2x]

  52. Rear Wheel Speed Sensor Bolt- Left Side and Right Side (1) @ Rear Suspension Knuckle - Install and tighten [2x] - Fastener Specifications
  53. GM5334765Courtesy of GENERAL MOTORS COMPANY

    Apply a thin layer of grease to the transmission output shaft splines (1). Adhesives, Fluids, Lubricants, and Sealers

  54. Loosely install a NEW propeller shaft hub clamp (3) to the propeller shaft joint boot.
  55. Support and secure the propeller shaft (2) to a suitable hydraulic jack stand.
  56. Propeller Shaft (2) - Install
  57. GM5317838Courtesy of GENERAL MOTORS COMPANY

    Prepare the 2 propeller shaft bearing support bolts (1) for installation as follows:

    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. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  58. Propeller Shaft Bearing Support Bolt (1) - Install and tighten [2x] - Fastener Specifications
  59. Remove the hydraulic jack stand supporting the propeller shaft.
  60. GM5317835Courtesy of GENERAL MOTORS COMPANY

    Prepare the 3 rear propeller shaft bolts (1) and nuts (3) for installation as follows:

    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. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  61. Align the relationship marks (2) made on the propeller shaft and the rear differential flange.
  62. Rear Propeller Shaft Bolt (1) - Install [3x]
  63. Rear Propeller Shaft Nut (3) - Loosely install [3x]
  64. Rear Propeller Shaft Bolt (1) - Tighten [3x] - Fastener Specifications
  65. GM5765227Courtesy of GENERAL MOTORS COMPANY
  66. Ensure that the drive shaft boot is completely seated in the output shaft groove prior to crimping the propeller shaft hub clamp (2).
  67. Using the DT-35910  Drive Axle Seal Clamp Pliers (1), crimp the propeller shaft hub clamp (2) until the final crimped outer diameter (a) is 39 - 41 mm (1.54 - 1.61 in).
  68. GM5427478Courtesy of GENERAL MOTORS COMPANY

    Transmission Mount (2) - Install

    69. NOTE:

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

  69. Transmission Mount Bolt (1) - Loosely install [2x]
  70. GM5427472Courtesy of GENERAL MOTORS COMPANY

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

  71. GM5427478Courtesy of GENERAL MOTORS COMPANY

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

  72. GM5427472Courtesy of GENERAL MOTORS COMPANY

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

  73. GM5471168Courtesy of GENERAL MOTORS COMPANY

    Floor Panel Number 2 Cross Bar Reinforcement (1) - Install

  74. Floor Panel Number 2 Cross Bar Reinforcement Bolt (2) - Install and tighten [4x] - Fastener Specifications 
  75. GM5309833Courtesy of GENERAL MOTORS COMPANY

    Exhaust Intermediate Underbody Heat Shield (2) - Install

  76. Exhaust Heat Shield Bolt (1) - Install and tighten [6x] - Fastener Specifications
  77. GM5309214Courtesy of GENERAL MOTORS COMPANY

    Catalytic Converter Gasket (2) - Install NEW

  78. With the aid of an assistant, install the exhaust muffler to the vehicle.
  79. GM5309211Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Right Side (3) - Install

  80. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Right Side (2) - Install
  81. GM5309202Courtesy of GENERAL MOTORS COMPANY

    Exhaust Muffler (1) @ Exhaust Rear Muffler Insulator-Left Side (3) - Install

  82. Exhaust Muffler (1) @ Exhaust Intermediate Pipe Insulator-Left Side (2) - Install
  83. GM5309188Courtesy of GENERAL MOTORS COMPANY

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

  84. GM5400756Courtesy of GENERAL MOTORS COMPANY

    Floor Panel Reinforcement (2) - Install

  85. Floor Panel Number 4 Cross Bar Reinforcement Bolt (1) - Install and tighten [6x] - Fastener Specifications 
  86. GM5400642Courtesy of GENERAL MOTORS COMPANY

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

  87. Underbody Rear Air Deflector Plastic Nut (3) - Install and tighten [3x] - Fastener Specifications 
  88. Underbody Rear Air Deflector Bolt (2) - Install and tighten [3x] - Fastener Specifications 
  89. Underbody Rear Air Deflector Nut (4) - Install and tighten [2x] - Fastener Specifications 
  90. Rear Wheelhouse Liner Screw (1) - Install and tighten - Fastener Specifications 
  91. GM5424018Courtesy of GENERAL MOTORS COMPANY

    Rear Tire Front Air Deflector- Right Side (2) - Install

  92. Rear Tire Front Air Deflector Bolt (1) - Install and tighten [2x] - Fastener Specifications 
  93. GM5400553Courtesy of GENERAL MOTORS COMPANY

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

  94. Underbody Rear Air Deflector Plastic Nut (2) - Install and tighten [3x] - Fastener Specifications 
  95. Underbody Rear Air Deflector Bolt (3) - Install and tighten [3x] - Fastener Specifications 
  96. Underbody Rear Air Deflector Nut (4) - Install and tighten [2x] - Fastener Specifications 
  97. Rear Wheelhouse Liner Screw (1) - Install and tighten - Fastener Specifications 
  98. GM5424015Courtesy of GENERAL MOTORS COMPANY

    Rear Tire Front Air Deflector- Left Side (2) - Install

  99. Rear Tire Front Air Deflector Bolt (1) - Install and tighten [2x] - Fastener Specifications 
  100. Install the rear tire and wheel assemblies. Tire and Wheel Removal and Installation
  101. Remove the support and lower the vehicle.
  102. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  103. Calibrate the park brake.
    1. Block the drive wheels.
    2. Install a scan tool to the vehicle.
    3. Turn the ignition switch to the ON/RUN position with the engine OFF.
    4. Select Configuration/Reset Functions from the Brake System Control Module.
    5. If available, perform the Parking Brake Calibration Procedure.
    6. If Park Brake Calibration is not available, proceed back and select Control Functions.
    7. Perform the Deactivate Rear Park Brake Service Position function.
    8. Apply and release the park brakes using the park brake switch to ensure that the system is functioning.
  104. Inspect the exhaust system for leaks.
  105. Perform wheel alignment. Wheel Alignment Measurement
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