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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Power Steering System) >> Repair Instructions >> Power Steering Assist Motor Replacement (with Blackwing) >> Removal Procedure

Removal 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. With the wheels of the vehicle in the straight ahead position, LOCK the steering column.
  2. Raise and support the vehicle. Lifting and Jacking the Vehicle
  3. Remove the front tire and wheel assemblies. Tire and Wheel Removal and Installation
  4. GM5873833Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Remove the 4 chassis harness retainers (1) on the left and right side.

  5. GM5873831Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Brake Rotor Cooling Duct Deflector Bolt (2)- Left Side and Right Side - Remove [6x]

  6. Front Brake Rotor Cooling Duct Deflector (1)- Left Side and Right Side - Remove
  7. GM5876673Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Wheelhouse Liner Bolt- Left Side and Right Side (1) - Remove [4x]

  8. Front Compartment Air Deflector Retainer- Left Side and Right Side (2) - Remove [2x]
  9. Front Bumper Fascia Lower Stiffener Bolt- Left Side and Right Side (3) - Remove [6x]
  10. GM5876696Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Compartment Air Deflector- Left Side and Right Side (1) - Remove [2x]

  11. GM5862911Courtesy of GENERAL MOTORS COMPANY

    Front Bumper Fascia Air Deflector Bolt (1) - Remove [4x]

  12. Front Bumper Fascia Air Deflector Retainer (2) - Remove
  13. Support the front cradle shear plate using a suitable jack.
  14. GM5877036Courtesy of GENERAL MOTORS COMPANY

    Front Cradle Shear Plate Bolt (1) - Remove [4x]

  15. Front Cradle Shear Plate Nut (2) - Remove [2x]
  16. Front Crossmember Brace Bolt (3) - Remove [8x]
  17. GM5877073Courtesy of GENERAL MOTORS COMPANY

    Front Wheelhouse Liner Bolt (1) - Remove [2x]

  18. GM5877068Courtesy of GENERAL MOTORS COMPANY

    Position the left and right side wheelhouse liners (1) away from the front cradle sheer plate (2).

  19. Remove the front cradle sheer plate (2) from between the front bumper fascia center air deflector and the driveline and front suspension cradle and lower it from the vehicle.
  20. GM5479740Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Left side shown, right side similar.
    • Some components not shown for graphic clarity.

    Loosen the left and right steering linkage outer tie rod nuts (1).

  21. GM5474571Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Do not attempt to disconnect a steering linkage joint by driving a wedge between the joint and the attached part. Seal damage may result which will cause premature failure of the joint.

    NOTE:
    • Left side shown, right side similar.
    • Some components not shown for graphic clarity.

    Using the CH-42188-B  Ball Joint Separator (1), separate the left and right steering linkage outer tie rods (2) from the left and right steering knuckles.

  22. GM5420203Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Left side shown, right side similar.
    • Some components not shown for graphic clarity.

    Remove the left and right steering linkage outer tie rod nuts (1).

  23. GM4093212Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Separate the left and right steering linkage outer tie rods (1) from the left and right steering knuckles.

  24. GM5479919Courtesy of GENERAL MOTORS COMPANY

    Intermediate Steering Shaft Lower Bolt (1) @ Electric Belt Drive Rack and Pinion Steering Gear - Remove

  25. Intermediate Steering Shaft (2) @ Electric Belt Drive Rack and Pinion Steering Gear - Separate
  26. GM5316620Courtesy of GENERAL MOTORS COMPANY

    Disconnect the electrical connectors (1).

  27. Remove the tie strap securing the engine wiring harness to the electric belt drive rack and pinion steering gear.
  28. Reposition the engine wiring harness away.
  29. GM5480145Courtesy of GENERAL MOTORS COMPANY

    Steering Gear Nut (1) - Remove [2x]

  30. Steering Gear Bolt (2) - Remove and DISCARD [2x]
  31. Electric Belt Drive Rack and Pinion Steering Gear (3) - Remove
  32. GM5359231Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    When positioning the rack and pinion steering gear in a vise, only clamp in the area specified. Failure to properly secure the rack and pinion steering gear in a vice, may result in damage. If the rack and pinion steering gear is damaged, it must be replaced.

    NOTE:

    When installing the steering gear in a vise and clamping on the barrel of the steering gear housing, do NOT pinch the torque sensor wiring harness. If available, use a soft jaw vise.

    Carefully clamp the electric belt drive rack and pinion steering gear (1) in a vise within the area indicated (a).

  33. CAUTION:

    Do not attempt to use power tools for cleaning or disassembly/assembly of the Electric Belt Drive Rack and Pinion Steering Gear or Power Steering Assist Motor. Failure to follow all the steps properly will result in a failed component requiring complete replacement of the Electric Belt Drive Rack and Pinion Steering Gear.

  34. Clean the gear with brake clean and a soft brush to remove dirt from the repair area and dry with compressed air. Adhesives, Fluids, Lubricants, and Sealers 
  35. GM5480844Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    When removing the steering gear housing covers, use caution to not damage or pry on the sealing surface and do not pierce the cover more than 1/4 inch or belt or belt gear damage can occur, resulting in complete electric belt drive rack and pinion steering gear replacement

    Using a small flat bladed tool (1), pierce the center of the small (2) and large (3) steering gear housing covers no more than 6 mm (0.25 in) (a).

  36. Remove and DISCARD the small (2) and large (3) steering gear housing covers.
  37. GM5346454Courtesy of GENERAL MOTORS COMPANY

    Use an appropriate sized open end wrench (2) to rotate the steering gear input shaft (1) and verify smooth rotation.

  38. Visually inspect the steering gear belt through the large and small cover area while rotating the electric belt drive rack and pinion steering gear input shaft (1) to verify any damage to the belt. If there is evidence that the belt is damaged, stop the procedure and replace the electric belt drive rack and pinion steering gear.
  39. GM5354800Courtesy of GENERAL MOTORS COMPANY

    Disengage the connector position assurance (CPA) (1) by using a small pick or small flat bladed tool and lightly pull towards you. The CPA will stop and not pull out of the cavity when disengaged. Do NOT try to pull the CPA out further as damage will occur. If the CPA is damaged, replace the entire electric belt drive rack and pinion steering gear.

  40. GM5354801Courtesy of GENERAL MOTORS COMPANY

    With a small flat bladed tool, depress the locking tab (1) towards the connector and lightly wiggle the connector body until disengaged. Do NOT attempt to pry anywhere else on the connector body or damage can occur.

  41. GM5354803Courtesy of GENERAL MOTORS COMPANY

    Verify the electrical connector (1) is NOT damaged. If damage is noted, do NOT attempt to repair the electrical connector. Replace the entire electric belt drive rack and pinion steering gear.

  42. Tape off the electrical connector to prevent debris from entering.
  43. GM5651741Courtesy of GENERAL MOTORS COMPANY

    Remove and DISCARD the 3 power steering assist motor bolts (1).

  44. GM5354969Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Prior to removal, note the orientation of the power steering assist motor to the electric belt drive rack and pinion steering gear.
    • Do NOT apply pressure on or near the plastic electronic control unit (ECU).

    Carefully remove the motor (1) from the housing using an appropriate size flat bladed tool to aid in the removal, ensuring that the belt slips off easily without damage.

  45. GM5354970Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    When cleaning the rack and pinion steering gear power assist motor sealing surface, ensure that no debris enters the belt cavity. Also ensure that no cleaning chemicals enter the belt cavity. If debris or cleaning chemicals enter the belt cavity, rack and pinion steering gear failure could occur and require replacement of the rack and pinion steering gear.

    Inspect the belt (1) and cavity for belt debris. If the belt has signs of wear, or excessive amounts of rubber debris has been encountered, replace the electric belt drive rack and pinion steering gear.

  46. Using low pressured compressed air blow any debris from the electric belt drive rack and pinion steering gear belt cavity. Do NOT use any cleaning fluid within the cavity as cleaning fluid could remove the grease on the rack ball located inside the cavity.
  47. Place a clean lint free towel within the electric belt drive rack and pinion steering gear belt cavity.
  48. NOTE:

    Do NOT use air tools to clean the power steering assist motor sealing surface.

  49. Using a commercially available abrasive cleaning pad with a grit ranging between 320 and 400, clean the assist motor sealing surface (2) removing all corrosion and room temperature vulcanizing (RTV) sealant from the surface area. If the power steering assist motor sealing surface has been damaged, replace the electric belt drive rack and pinion steering gear.
  50. Remove the lint free towel from the electric belt drive rack and pinion steering gear belt cavity and ensure no debris has entered the cavity.
  51. Using low pressured compressed air blow any debris from the electric belt drive rack and pinion steering gear belt cavity. Do NOT use any cleaning fluid within the cavity as cleaning fluid could remove the grease on the rack ball located inside the cavity.