GM Service Manual Online
For 1990-2009 cars only

Power Steering Pump Replacement 5.0L, 5.7L

Removal Procedure

Tools Required

J 25034-C Power Steering Pump Pulley Remover

  1. Place a drain pan below the pump.
  2. Remove the hoses.
  3. Cap the hoses.
  4. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.

  5. Object Number: 624  Size: SH
  6. Remove the pulley.

    5.1. Install the J 25034-C .
    5.2. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    5.3. Hold the pilot bolt.
    5.4. Turn the nut counterclockwise.

    Object Number: 245016  Size: SH
  7. Remove the front mounting bolts.
  8. Remove the rear mounting nuts from the studs.
  9. Remove the electrical connector from EVO actuator.
  10. Remove the pump.

Installation Procedure

Tools Required

J 25033-C Power Steering Pump Pulley Installer

  1. Install the pump.

  2. Object Number: 245016  Size: SH
  3. Install the front mounting bolts.
  4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  5. Install the rear mounting nuts to the studs.
  6. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).


    Object Number: 9983  Size: SH
  7. Install the pulley.
  8. 4.1. Place the pulley on the end of the pump shaft.
    4.2. Install the J 25033-C .
    4.3. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    4.4. Hold the pilot bolt.
    4.5. Turn the nut clockwise.

            Notice: Do not use an arbor press or internal damage to the pump will result.

    4.6. Connect the pulley to the end of the power steering pump shaft.

    Install the pulley flush with 0.5 mm (0.020 in) play.

  9. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  10. Install the hoses.
  11. Install the electrical connector to the EVO actuator.
  12. Fill and bleed the system. Refer to Checking and Adding Power Steering Fluid and Power Steering System Bleeding .
  13. Inspect the hoses and the wiring for clearance.

Power Steering Pump Replacement 7.4L

Removal Procedure

Tools Required

J 25034-C Power Steering Pump Pulley Remover

  1. Place a drain pan below the pump.
  2. Remove the hoses.
  3. Cap the hoses.
  4. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.

  5. Object Number: 624  Size: SH
  6. Remove the pulley.
  7. 5.1. Install the J 25034-C .
    5.2. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    5.3. Hold the pilot bolt.
    5.4. Turn the nut counterclockwise.

    Object Number: 245020  Size: SH
  8. Remove the front mounting bolts.
  9. Remove the rear mounting nuts from the studs.
  10. Remove the electrical connector from EVO actuator.
  11. Remove the pump.

Installation Procedure

Tools Required

J 25033-C Power Steering Pump Pulley Installer

  1. Install the pump.

  2. Object Number: 245020  Size: SH
  3. Install the front mounting bolts.
  4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  5. Install the rear mounting nuts to the studs.
  6. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).


    Object Number: 9983  Size: SH
  7. Install the pulley.
  8. 4.1. Place the pulley on the end of the pump shaft.
    4.2. Install the J 25033-C .
    4.3. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    4.4. Hold the pilot bolt.
    4.5. Turn the nut clockwise.

            Notice: Do not use an arbor press or internal damage to the pump will result.

    4.6. Connect the pulley to the end of the power steering pump shaft.

    Install the pulley flush with 0.5 mm (0.020 in) play.

  9. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  10. Install the hoses.
  11. Install the electrical connector to the EVO actuator.
  12. Fill and bleed the system. Refer to Checking and Adding Power Steering Fluid and Power Steering System Bleeding .
  13. Inspect the hoses and the wiring for clearance.

Power Steering Pump Replacement 6.5L

Removal Procedure

Tools Required

J 25034-C Power Steering Pump Pulley Remover

  1. Place a drain pan below the pump.
  2. Remove the hoses.
  3. Cap the hoses.
  4. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.

  5. Object Number: 624  Size: SH
  6. Remove the pulley.
  7. 5.1. Install the J 25034-C .
    5.2. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    5.3. Hold the pilot bolt.
    5.4. Turn the nut counterclockwise.

    Object Number: 245023  Size: SH
  8. Remove the front mounting bolts.
  9. Remove the rear mounting nuts from the studs.
  10. Remove the electrical connector from EVO actuator.
  11. Remove the pump.

Installation Procedure

Tools Required

J 25033-C Power Steering Pump Pulley Installer

  1. Install the pump.

  2. Object Number: 245023  Size: SH
  3. Install the front mounting bolts.
  4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  5. Install the rear mounting nuts to the studs.
  6. Tighten
    Tighten the nuts to 50 N·m (37 lb ft).


    Object Number: 9983  Size: SH
  7. Install the pulley.
  8. 4.1. Place the pulley on the end of the pump shaft.
    4.2. Install the J 25033-C .
    4.3. Be sure the pilot bolt bottoms in the pump shaft by turning the nut to the top of the pilot bolt.
    4.4. Hold the pilot bolt.
    4.5. Turn the nut clockwise.

            Notice: Do not use an arbor press or internal damage to the pump will result.

    4.6. Connect the pulley to the end of the power steering pump shaft.

    Install the pulley flush with 0.5 mm (0.020 in) play.

  9. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical.
  10. Install the hoses.
  11. Install the electrical connector to the EVO actuator.
  12. Fill and bleed the system. Refer to Checking and Adding Power Steering Fluid and Power Steering System Bleeding .
  13. Inspect the hoses and the wiring for clearance.