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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 292 (Frame And Underbody) >> Repair Instructions >> Rear Suspension Cradle Removal and Installation (Blackwing) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM5880986Courtesy of GENERAL MOTORS COMPANY
    NOTE:

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

    Rear Suspension Cradle (1) - Install

  2. GM5893422Courtesy of GENERAL MOTORS COMPANY

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

  3. GM5880932Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

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

    1. First Pass: 100 N.m (74 lb ft)
    2. Final Pass: (90 - 105 degrees)
  4. GM5883914Courtesy of GENERAL MOTORS COMPANY

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

  5. Remove the 2 CH-51034-A  Cradle Alignment Pins from the rear cradle.
  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] - Rear Suspension Bracket Replacement - Rear

  8. GM5881284Courtesy of GENERAL MOTORS COMPANY

    Install the chassis wiring harness retainer (1) to the underbody air front deflector stud.

  9. Install the chassis wiring harness channel (2) to the 2 body studs.
  10. GM5881258Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Connect the 2 body wiring harness electrical connectors (1) to the chassis wiring harness electrical connectors.

  11. GM5590590Courtesy of GENERAL MOTORS COMPANY

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

  12. 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.

  13. 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.

  14. GM5892738Courtesy of GENERAL MOTORS COMPANY

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

  15. GM5442507Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Bracket - Right Side (2) - Install - Rear Suspension Bracket Replacement - Front

    DO NOT ATTEMPT OTHER REPAIRS WITH JACK STANDS IN PLACE.

  16. 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.

  17. Using the jack stand (1) and the block of wood, slowly lower the vehicle back on the hoist pad (2).
  18. 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.

  19. 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.

  20. 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.

  21. GM5892743Courtesy of GENERAL MOTORS COMPANY

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

  22. GM5442507Courtesy of GENERAL MOTORS COMPANY

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

    DO NOT ATTEMPT OTHER REPAIRS WITH JACK STANDS IN PLACE.

  23. GM5591038Courtesy of GENERAL MOTORS COMPANY

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

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

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

  26. GM5590590Courtesy of GENERAL MOTORS COMPANY

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

  27. GM5876657Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Brake Caliper - Left Side and Right Side (1) - Install [2x] - Rear Brake Caliper Replacement (JL9, J56) , or Rear Brake Caliper Replacement (J6H) , or Rear Brake Caliper Replacement (J57)

  28. GM5877737Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Parking Brake Caliper - Left Side and Right Side (2) - Install [2x] - Parking Brake Caliper Replacement (J57, J6H)

  29. GM5892124Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Brake Hose Clip Bolt - Left Side and Right Side (1) @ Rear Suspension Upper Control Arm - Install and tighten - Rear Brake Hose Replacement (J56, JL9) , or Rear Brake Hose Replacement (J6H) , or Rear Brake Hose Replacement (J57)

  30. 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] - Rear Suspension Lower Control Arm Replacement

  31. GM5336772Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Rear Suspension Upper Trailing Link - Left Side and Right Side (1) - Install [2x] - Rear Suspension Upper Trailing Link Replacement (FE2, FE3) , or Rear Suspension Upper Trailing Link Replacement (FE4)

  32. GM5863854Courtesy of GENERAL MOTORS COMPANY

    Propeller Shaft (1) - Install - Propeller Shaft Replacement (with LT4, MJK) , or Propeller Shaft Replacement (with LT4, MHX)

  33. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection
  34. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  35. Slowly release the brake pedal.
  36. Wait 15 seconds, then repeat steps 34 - 35 until a firm brake pedal is obtained. This will properly seat the brake caliper pistons and brake pads.
  37. Fill the brake master cylinder reservoir to the maximum-full level with GM approved brake fluid from a clean, sealed brake fluid container. Brake Master Cylinder Reservoir Filling
  38. 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.
    39. NOTE:

    Vehicle alignment is not required if cradle is being lowered or dropped to perform another procedure. This vehicle is equipped with a cradle to body aligning feature: cradle to body through holes or self-aligning pins that are part of cradle or body. Only align if replacing the cradle with new part and transferring components.

  39. Perform wheel alignment. Wheel Alignment Measurement
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