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Home >> GMC >> 2024 >> Hummer EV 3X, 4D Utility >> Repair and Diagnosis >> Steering >> Power Steering System >> Repair Instructions >> Power Steering Assist Motor Replacement >> Removal Procedure

Removal Procedure

  1. Remove the front tire and wheel assemblies. Tire and Wheel Removal and Installation
  2. Place match marks on the steering linkage inner tie rod nut and the steering linkage inner tie rod.
  3. GM5865279Courtesy of GENERAL MOTORS COMPANY

    Front Cradle (2) - Remove - Front Cradle Removal and Installation

  4. GM5795335Courtesy of GENERAL MOTORS COMPANY

    Retainer (2) - Release

  5. Drive Motor Control Module Radiator Inlet Hose (1) @ Engine Radiator - Remove
  6. GM5787362Courtesy of GENERAL MOTORS COMPANY

    Retainer (1) - Release

  7. Drive Motor Control Module Radiator Outlet Hose (2) @ Engine Radiator - Remove
  8. GM6050012Courtesy of GENERAL MOTORS COMPANY

    Disconnect the electrical connectors and release the wiring harness retainers as necessary.

  9. Remove the air conditioning condenser, engine cooling fan and engine radiator as an assembly (1) from the front cradle.
  10. GM5902654Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness Retainer (1) @ Front Cradle - Remove [3x]

  11. Engine Wiring Harness Ground Bolt (2) - Remove [2x]
  12. Engine Wiring Harness Bolt (3) - Remove
  13. GM5902657Courtesy of GENERAL MOTORS COMPANY

    Generator Control Module Coolant Pump Bracket Bolt - Left Side (1) - Remove [2x]

  14. GM5902663Courtesy of GENERAL MOTORS COMPANY

    Generator Control Module Coolant Pump Bracket Bolt- Right Side (1) - Remove [2x]

  15. GM5902668Courtesy of GENERAL MOTORS COMPANY

    Battery Positive Cable Channel Nut (1) - Remove [2x]

  16. Remove the front electric drive transmission module positive and negative cable (2) from the wiring harness bracket.
  17. GM6082160Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Battery Negative Cable Ground Bolt (1) - Left Side and Right Side - Remove [2x]

  18. Battery Negative Cable Extension Cable (2) - Left Side and Right Side - Reposition [2x]
  19. GM5893651Courtesy of GENERAL MOTORS COMPANY
    WARNING:

    The transmission may weigh in excess of 215 kg (475 lbs), either by itself or in combination with additional components, use extreme care when installing, removing, or moving the transmission. Assistance from a hoist and/or an assistant may be required.

    • Ensure that lifting equipment can properly support the transmission and any additional components.
    • Ensure rigging applies vertical force to the lifting points and never horizontal.
    • The use of a load leveler is recommended.

    Failure to follow these guidelines can result in personal injury and/or component damage.

    Assemble the following tools to the front electric drive transmission module (4):

    • EN-36857  Engine Lift Bracket (2).
    • EN-52059  Engine Support Fixture Adapter Bolts - M10 (1) and tighten to 37 N.m (27 lb ft).
    • Overhead Hoist Hooks (3).
  20. GM5903315Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    CAUTION:

    DO NOT use air tools to remove the wheel drive shaft nut. Damage to the wheel drive shaft threads could occur. Use hand tools only.

    Front Wheel Drive Shaft Nut - Left Side and Right Side (1) - Remove and DISCARD [2x]

  21. GM5903384Courtesy of GENERAL MOTORS COMPANY

    Install the DT-45859  Axle Remover (2) to the left side front wheel hub and secure with 4 wheel nuts (1) hand tightened.

  22. Using the DT-45859  Axle Remover (2), release the left side front wheel drive half shaft from the front wheel hub.
  23. Remove the 4 wheel nuts (1) and the DT-45859  Axle Remover (2) from the left side front wheel hub.
  24. GM5903384Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Install the DT-45859  Axle Remover (2) to the right side front wheel hub and secure with 4 wheel nuts (1) hand tightened.

  25. Using the DT-45859  Axle Remover (2), release the right side front wheel drive half shaft from the front wheel hub.
  26. Remove the 4 wheel nuts (1) and the DT-45859  Axle Remover (2) from the right side front wheel hub.
  27. GM5922253Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Using a suitable flat bladed tool (1), release the left and right side front wheel drive half shafts (2) from the front electric drive transmission module.

  28. GM5903392Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Front Wheel Drive Half Shaft - Left Side and Right Side (1) - Remove [2x]

  29. GM5840808Courtesy of GENERAL MOTORS COMPANY

    Front Wheel Drive Shaft Washer - Left Side and Right Side (1) - Remove [2x]

  30. GM5903393Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Output Shaft Retaining Ring - Left Side and Right Side (2) - Remove and DISCARD [2x]

  31. Output Shaft Seal - Left Side and Right Side (1) - Remove and DISCARD [2x]
  32. GM5902700Courtesy of GENERAL MOTORS COMPANY

    Drive Motor Rear Mount Bracket Bolt (1) - Remove and DISCARD [6x]

  33. GM6082035Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Drive Motor Mount Nut (1) - Remove

  34. Rear Drive Motor Rear Mount Bolt-M12 x 116 (2) - Remove and DISCARD [2x]
  35. GM5902697Courtesy of GENERAL MOTORS COMPANY

    Disconnect the electrical connectors and release the wiring harness retainers as necessary.

  36. Disconnect the hose retainers as necessary.
  37. Separate the front cradle (1) from the front electric drive transmission assembly.
  38. GM5830456Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Linkage Inner Tie Rod Nut - Left Side and Right Side (1) - Loosen [2x]

  39. GM5823940Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Linkage Outer Tie Rod Nut - Left Side and Right Side (1) - Loosen

  40. GM5830459Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    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.

    Using J-42188-B  Ball Joint Separator (1), remove the steering linkage outer tie rods from the left and right side steering knuckles.

  41. GM5902729Courtesy of GENERAL MOTORS COMPANY

    Steering Linkage Outer Tie Rod Nut (1) - Remove [2x]

  42. GM5902730Courtesy of GENERAL MOTORS COMPANY

    Steering Gear Bolt - Upper (1) - Remove [2x]

  43. Steering Gear Nut (4) - Remove [2x]
  44. Steering Gear Bolt - Lower (2) - Remove [2x]
  45. Electric Belt Drive Rack and Pinion Steering Gear (3) - Remove
  46. GM5909741Courtesy of GENERAL MOTORS COMPANY

    Intermediate Steering Shaft Lower Bolt (1) - Remove

  47. Intermediate Steering Shaft (2) - Remove
  48. GM5909899Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Linkage Outer Tie Rod - Left Side and Right Side (1) - Remove [2x]

  49. Steering Linkage Inner Tie Rod Nut - Left Side and Right Side (2) - Remove [2x]
  50. GM5909902Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Gear Boot Clamp- Outer - Left Side and Right Side (1) - Remove [2x]

  51. GM5909905Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Gear Boot Clamp- Inner - Left Side and Right Side (1) - Remove and DISCARD [2x]

  52. GM5909907Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Gear Boot - Left Side and Right Side (1) - Remove [2x]

  53. GM5909909Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    CAUTION:

    Holding the steering gear rack bar with anything other than a non-serrated adjustable wrench will cause damage to the steering gear.

    Cover the electric belt drive rack and pinion steering gear bar (2) with a clean shop towel.

  54. Hold the electric belt drive rack and pinion steering gear bar (2) with a non-serrated adjustable wrench.
  55. Using a universal inner tie rod wrench, loosen the left and right side steering linkage inner tie rods (1).
  56. GM5909910Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Left side shown, right side similar.

    Steering Linkage Inner Tie Rod - Left Side and Right Side (1) - Remove [2x]

  57. GM5838634Courtesy of GENERAL MOTORS COMPANY

    Steering Gear Bolt (1) - Remove and DISCARD [6x]

  58. Save 2 steering gear bolts for the installation of the power steering assist motor.
  59. Steering Gear Housing Cover (2) - Remove
  60. Power Steering Assist Motor Seal (3) @ Steering Gear Housing Cover - Remove and DISCARD
  61. GM6146693Courtesy of GENERAL MOTORS COMPANY

    Loosen the steering gear idler pulley. (1)

  62. GM6145451Courtesy of GENERAL MOTORS COMPANY

    Electric Belt Drive Rack and Pinion Steering Gear Belt (1) - Remove and DISCARD

  63. GM5838642Courtesy of GENERAL MOTORS COMPANY

    Disconnect the electrical connectors. (1)

  64. GM5838637Courtesy of GENERAL MOTORS COMPANY

    Steering Gear Bolt (1) - Remove and DISCARD [4x]

  65. GM5838643Courtesy of GENERAL MOTORS COMPANY

    Power Steering Assist Motor (2) - Remove

  66. Power Steering Assist Motor Seal (1) @ Power Steering Assist Motor - Remove and DISCARD
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