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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 Replacement (Blackwing) >> Installation Procedure

Installation Procedure

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  1. GM5668907Courtesy of GENERAL MOTORS COMPANY

    Install the differential carrier assembly (1) to the rear suspension cradle (2).

  2. GM5668908Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Differential Carrier Front Bolt (1) - Install [2x]

  3. Differential Carrier Nut (2) - Install and tighten [2x] - Fastener Specifications
  4. GM5668911Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    Install the NEW differential carrier rear bolt and washer (1) and tighten. Fastener Specifications

  5. GM5883062Courtesy of GENERAL MOTORS COMPANY

    Install the transmission fluid auxiliary cooler inlet and outlet pipe assembly (3) to the differential carrier.

  6. Transmission Fluid Cooler Pipe Bolt (2) - Install and tighten - Fastener Specifications
  7. Transmission Fluid Cooler Pipe Clip Bolt (1) - Install and tighten - Fastener Specifications
  8. GM5668909Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Install the following components on the left and right sides as assemblies (1).

    • Rear Suspension Knuckle
    • Rear Suspension Upper Trailing Link
    • Rear Suspension Lower Trailing Link
    • Rear Suspension Upper Control Arm
    • Rear Suspension Adjust Link
    • Rear Brake Rotor
    • Rear Wheel Drive Shaft
  9. GM5668910Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The rear wheel drive shaft universal joint retainer (1) and washers (2) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

  10. If a NEW threaded component is being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded component is reused, prepare the threaded component using the following steps:
    1. Remove any loose cured adhesive from the external threads of the component using a lint free cloth.
    2. Thread the cleaned component into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the component. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  11. Install 3 NEW wheel drive shaft flange washers (2).
  12. Install and tighten the 6 NEW rear wheel drive shaft universal joint retainers in a crisscross pattern. Fastener Specifications
  13. GM5668913Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    NOTE:

    The rear wheel drive shaft universal joint retainer (2) and washers (1) are serviced as a rear wheel drive shaft universal joint retainer kit consisting of 2 bolts and 1 washer.

  14. If a NEW threaded component is being installed, loosen the adhesive using a metal pick or similar tool before proceeding. If threaded component is reused, prepare the threaded component using the following steps:
    1. Remove any loose cured adhesive from the external threads of the component using a lint free cloth.
    2. Thread the cleaned component into the internal mating threads and remove to loosen trapped cured adhesive.
    3. Apply thread locking adhesive to the external threads of the component. Adhesives, Fluids, Lubricants, and Sealers
    4. Ensure there are no gaps in the thread locking adhesive once applied to the component.
  15. Install 3 NEW wheel drive shaft flange washers (1).
  16. Install and tighten the 6 NEW rear wheel drive shaft universal joint retainers in a crisscross pattern. Fastener Specifications
  17. GM5668917Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Upper Control Arm- Left Side and Right Side (3) - Reposition [2x]

    18. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  18. Rear Suspension Upper Control Arm Inner Bolt- Left Side and Right Side (1) - Install NEW [2x]
  19. Rear Suspension Upper Control Arm Inner Nut- Left Side and Right Side (2) - Install and tighten [2x] - Fastener Specifications
  20. GM5668918Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Upper Trailing Link- Left Side and Right Side (3) - Reposition [2x]

    21. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  21. Rear Suspension Upper Trailing Link Inner Bolt- Left Side and Right Side (1) - Install NEW [2x]
  22. Rear Suspension Upper Trailing Link Inner Nut- Left Side and Right Side (2) - Install and tighten [2x] - Fastener Specifications
  23. GM5668912Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Lower Trailing Link- Left Side and Right Side (3) - Reposition [2x]

    24. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  24. Rear Suspension Trailing Arm Bolt- Left Side and Right Side (2) - Install NEW [2x]
  25. Rear Suspension Trailing Arm Nut- Left Side and Right Side (1) - Install and tighten [2x] - Fastener Specifications
  26. GM5669032Courtesy of GENERAL MOTORS COMPANY

    Rear Suspension Adjust Link- Left Side and Right Side (4) - Reposition [2x]

    27. CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

  27. Rear Suspension Adjust Link Bolt- Left Side and Right Side (3) - Install NEW [2x]
  28. Rear Suspension Adjust Link Washer- Left Side and Right Side (2) - Install [2x]
    29. NOTE:

    The final torque on the rear suspension link inner nut (1) is to be applied during the rear toe setting procedure.

  29. Rear Suspension Link Inner Nut- Left Side and Right Side (1) - Install and hand tighten [2x]
  30. GM5668981Courtesy of GENERAL MOTORS COMPANY

    Install the rear stabilizer shaft (1) with the rear stabilizer shaft links attached.

  31. GM5668916Courtesy of GENERAL MOTORS COMPANY

    Rear Stabilizer Shaft Clamp (3) - Install [2x]

  32. Rear Stabilizer Shaft Clamp Bolt (2) - Install and tighten [3x] - Fastener Specifications
  33. Rear Stabilizer Shaft Clamp Stud (1) - Install and tighten - Fastener Specifications
  34. Rear Stabilizer Shaft Link Bolt (4) - Install and tighten [2x] - Fastener Specifications
  35. GM5881247Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Electronic Suspension Rear Vertical Accelerometer- Left Side and Right Side (3) - Install [2x]

  36. Wiring Harness Retainer- Left Side and Right Side (1) - Install [2x]
  37. Wiring Harness Retainer- Left Side and Right Side (2) - Install [6x]
  38. Wiring Harness Retainer- Left Side and Right Side (4) - Install [2x]
  39. Electronic Suspension Rear Vertical Accelerometer Bolt- Left Side and Right Side (5) - Install and tighten [2x] - Fastener Specifications
  40. GM5881033Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

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

  41. Wiring Harness Retainer- Left Side and Right Side (1) - Install [2x]
  42. Wiring Harness Retainer- Left Side and Right Side (3) - Install [6x]
  43. Rear Wheel Speed Sensor Bolt- Left Side and Right Side (4) - Install and tighten [2x] - Fastener Specifications
  44. GM5881005Courtesy of GENERAL MOTORS COMPANY

    Install the chassis wiring harness (6) to the rear suspension cradle assembly.

  45. Wiring Harness Retainer (5) - Install
  46. Electrical Connector (3) @ Differential Carrier Assembly - Connect
  47. Connect the 2 chassis wiring harness connectors (4) to the left and right side wheel speed sensor harness connectors.
  48. Wiring Harness Retainer (2) - Install [2x]
  49. Wiring Harness Retainer (1) - Install [5x]
  50. GM5880989Courtesy of GENERAL MOTORS COMPANY

    Wiring Harness Retainer (2) - Install [4x]

  51. Wiring Harness Retainer (1) - Install [4x]
  52. GM5668915Courtesy of GENERAL MOTORS COMPANY

    Rear Suspension Cradle (1) - Install - Rear Suspension Cradle Removal and Installation (Blackwing MHU) , or Rear Suspension Cradle Removal and Installation (Blackwing MG9) , or Rear Suspension Cradle Removal and Installation (LSY F46) , or Rear Suspension Cradle Removal and Installation (L3B RWL) , or Rear Suspension Cradle Removal and Installation (L3B F46) , or Rear Suspension Cradle Removal and Installation (LSY RWL) 

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