GM Service Manual Online
For 1990-2009 cars only

Power Steering Pump Pulley Replacement LY7

Tools Required

    • J 25034-C Power Steering Pump Pulley Remover
    • J 25034-257 Power Steering Pump Pulley Remover Adapter

Removal Procedure

  1. Remove the power steering pump from the engine for clearance. Refer to Power Steering Pump Replacement .

  2. Object Number: 649303  Size: SH
  3. Use the J 25034-C and J 25034-257 in order to remove the pump pulley.

Installation Procedure


    Object Number: 643361  Size: SH
  1. Use Mac® Tools Power Steering Pump Pulley Service Kit or equivalent, to install the power steering pump pulley.

  2. Object Number: 254752  Size: SH

    Important: 

       • Ensure that the face of the pulley hub is flush to within 0.25 mm (0.010 in) with the end of the pump shaft.
       • Do not use the arbor press to install the pulley.

  3. Install the power steering pump to the engine. Refer to Power Steering Pump Replacement .

Power Steering Pump Pulley Replacement L26

Tools Required

    • J 25033-C Pulley Installer
    • J 25034-C Pulley Remover

Removal Procedure

  1. Remove the power steering pump from the engine for clearance. Refer to Power Steering Pump Replacement.

  2. Object Number: 293353  Size: SH
  3. Using J 25034-C remove the power steering pump pulley from the power steering pump.

Installation Procedure


    Object Number: 293353  Size: SH
  1. Using J 25033-C install the power steering pump pulley to the power steering pump.

  2. Object Number: 254752  Size: SH

    Important: 

       • Never use a hammer to install the power steering pulley.
       • The face of the power steering pulley hub must be flush to within 0.25 mm (0.010 in) with the end of the power steering pump driveshaft.

  3. Install the power steering pump to the engine. Refer to Power Steering Pump Replacement.
  4. Fill the power steering system. Refer to Checking and Adding Power Steering Fluid.
  5. Bleed the power steering system. Refer to Power Steering System Bleeding.
  6. Inspect the power steering system for leaks. Refer to Power Steering Fluid Leaks.