GM Service Manual Online
For 1990-2009 cars only

Power Steering Pump Replacement 4.3, 5.0 and 5.7L Engines

Tools Required

    • J 25034-C Power Steering Pulley Remover
    • J 25033-C Power Steering Pump Pulley Installer

Removal Procedure

  1. Using the J 25034-C remove the power steering pump pulley from the vehicle. Refer to Power Steering Pump Pulley Replacement .
  2. Place a drain pan below under the vehicle.

  3. Object Number: 309298  Size: SH
  4. Disconnect the power steering pressure hose (2) from the pump.

  5. Object Number: 309301  Size: SH
  6. Disconnect the power steering return hose (1) from the pump.

  7. Object Number: 309295  Size: SH
  8. Disconnect the reservoir outlet hose (3) from the power steering pump.
  9. Cap the ends of the hose and the pump in order to prevent the entrance of dirt.

  10. Object Number: 284251  Size: SH
  11. Remove the power steering pump mounting bolts and the nut from the vehicle.

  12. Object Number: 309287  Size: SH
  13. Remove the accessory mounting bracket (1) mounting bolts and nuts.
  14. Pull the accessory bracket forward.
  15. Remove the power steering pump from the vehicle.

Installation Procedure


    Object Number: 309292  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the rear bracket (1) to the pump (2).
  2. Tighten
    Tighten the rear bracket to 50 N·m (37 lb ft).


    Object Number: 284251  Size: SH
  3. Install the pump assembly to the engine using the bolts.
  4. Tighten
    Tighten the retaining bolts to 50 N·m (37 lb ft).


    Object Number: 309287  Size: SH
  5. Reposition the accessory mounting bracket and install the bolts (3) and nut.
  6. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  7. Tighten the accessory mounting bracket nut.
  8. Tighten
    Tighten the nut to 41 N·m (30 lb ft).

  9. Uncap the power steering hoses.

  10. Object Number: 309298  Size: SH

    Important: Route the power steering hoses in the same location in which they were removed.

  11. Install the power steering pressure hose (2) to the pump.
  12. Tighten
    Tighten the hose fitting to 27 N·m (20 lb ft).


    Object Number: 309301  Size: SH
  13. Install the power steering return hose (1) and the secure the hose with the retaining clamp to the pump.

  14. Object Number: 309295  Size: SH
  15. Install the reservoir outlet hose (3) and the secure the hose with the retaining clamp to the pump.
  16. Place the pulley on the end of the pump shaft.
  17. Using the J 25033-C install the power steering pump pulley. Refer to Power Steering Pump Pulley Replacement .
  18. Fill the system with power steering fluid. Refer to Checking and Adding Power Steering Fluid .
  19. Bleed the system. Refer to Power Steering System Bleeding .
  20. Remove the drain pan from under the vehicle.

Power Steering Pump Replacement 8.1L Engine

Tools Required

    • J 25034-C Power Steering Pulley Remover
    • J 25033-C Power Steering Pump Pulley Installer

Removal Procedure

  1. Place a drain pan under the vehicle.
  2. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Mechanical.
  3. Remove the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.

  4. Object Number: 309298  Size: SH
  5. Disconnect the power steering pressure hoses (2) from the pump.

  6. Object Number: 309301  Size: SH
  7. Disconnect the power steering return hose (1) from the pump.

  8. Object Number: 309295  Size: SH
  9. Disconnect the reservoir outlet hose (3) from the power steering pump.
  10. Cap the ends of the hose and the pump in order to prevent the entrance of dirt.
  11. Remove the pump drive belt. Install a 3/8 inch drive ratchet on the tensioner arm and rotate the arm counterclockwise.

  12. Object Number: 649303  Size: SH
  13. Using the J 25034-C remove the power steering pump pulley from the vehicle.

  14. Object Number: 309288  Size: SH
  15. Remove the power steering pump mounting bolts (1,3) from the vehicle.
  16. Remove the power steering pump from the vehicle.

Installation Procedure


    Object Number: 644347  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the rear bracket (1) to the pump (2).
  2. Tighten
    Tighten the rear bracket to 50 N·m (37 lb ft).


    Object Number: 309288  Size: SH
  3. Install the bolts (3) retaining the pump to the engine.
  4. Tighten
    Tighten the retaining bolts to 50 N·m (37 lb ft).

  5. Place the pulley on the end of the pump shaft.

  6. Object Number: 643361  Size: SH
  7. Using the J 25033-C install the power steering pump pulley.
  8. Important: Route the power steering hoses in the same location in which they were removed.


    Object Number: 309298  Size: SH
  9. Install the power steering pressure hose (2) to the pump.
  10. Tighten
    Tighten the hose fitting to 27 N·m (20 lb ft).


    Object Number: 309301  Size: SH
  11. Install the power steering return hose (1) and the secure the hose with the retaining clamp to the pump.

  12. Object Number: 309295  Size: SH
  13. Install the reservoir outlet hose (3) and the secure the hose with the retaining clamp (4) to the pump.
  14. Install the pump drive belt. Install a 3/8 inch drive ratchet on the tensioner arm and rotate the arm counterclockwise.
  15. Install the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
  16. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Mechanical.
  17. Fill the system with power steering fluid. Refer to Checking and Adding Power Steering Fluid .
  18. Bleed the system. Refer to Power Steering System Bleeding .

Power Steering Pump Replacement 6.5L Diesel

Tools Required

    • J 25034-C Power Steering Pulley Remover
    • J 25033-C Power Steering Pump Pulley Installer

Removal Procedure

  1. Place a drain pan under the vehicle.
  2. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Mechanical.
  3. Remove the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.

  4. Object Number: 309298  Size: SH
  5. Disconnect the power steering pressure hose (2) from the pump.

  6. Object Number: 309301  Size: SH
  7. Disconnect the power steering return hose (1) from the pump.

  8. Object Number: 309295  Size: SH
  9. Disconnect the reservoir outlet hose (3) from the power steering pump.
  10. Cap the ends of the hose and the pump in order to prevent the entrance of dirt.
  11. Remove the pump drive belt. Install a 3/8 inch drive ratchet on the tensioner arm and rotate the arm counterclockwise.

  12. Object Number: 649303  Size: SH
  13. Using the J 25034-C remove the power steering pump pulley from the vehicle.

  14. Object Number: 309288  Size: SH
  15. Remove the power steering pump mounting bolts (1,3) from the vehicle.
  16. Remove the power steering pump from the vehicle.

Installation Procedure


    Object Number: 648599  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  1. Install the rear bracket (1) to the pump (2).
  2. Tighten
    Tighten the rear bracket to 50 N·m (37 lb ft).


    Object Number: 309288  Size: SH
  3. Install the pump assembly to the engine using the bolts (3).
  4. Tighten
    Tighten the retaining bolts to 50 N·m (37 lb ft).

  5. Place the pulley on the end of the pump shaft.

  6. Object Number: 643361  Size: SH
  7. Using the J 25033-C install the power steering pump pulley.

  8. Object Number: 309298  Size: SH

    Important: Route the power steering hoses in the same location in which they were removed.

  9. Install the power steering pressure hose (2) to the pump.
  10. Tighten
    Tighten the hose fitting to 27 N·m (20 lb ft).


    Object Number: 309301  Size: SH
  11. Install the power steering return hose (1) and the secure the hose with the retaining clamp to the pump.

  12. Object Number: 309295  Size: SH
  13. Install the reservoir outlet hose (3) and the secure the hose with the retaining clamp to the pump.
  14. Install the pump drive belt. Install a 3/8 inch drive ratchet on the tensioner arm and rotate the arm counterclockwise.
  15. Install the fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
  16. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Mechanical.
  17. Fill the system with power steering fluid. Refer to Checking and Adding Power Steering Fluid .
  18. Bleed the system. Refer to Power Steering System Bleeding .