GM Service Manual Online
For 1990-2009 cars only
  1. Raise the vehicle until the wheels can turn freely. Refer to Lifting and Jacking the Vehicle in General Information.

  2. Object Number: 247447  Size: SH

    Notice: Avoid contaminating the power steering system. Cap open hoses and ports to prevent dirt and debris from entering system. Contaminated power steering fluid and dirt can cause early parts failure.

  3. Plug the connector port on the pump in order to prevent dirt from entering the system and proceed as follows:
  4. 2.1. Remove the fluid return hose at the pump inlet connector.
    2.2. Position the hose towards a large container in order to catch the draining fluid.
  5. Turn the ignition switch to the ON position.
  6. Run the engine at idle.

  7. Object Number: 258704  Size: SH

    Important: Do not contact the wheel stops or turn the wheel completely clockwise or counterclockwise. Fluid flow will stop and the pump will be in a relief pressure mode.

  8. While an assistant is filling the reservoir with new power steering fluid, turn the steering wheel from right to left. Repeat this step until all of the foreign material is cleared from the draining fluid.
  9. Flush the individual components if the foreign material is still present.

  10. Object Number: 247453  Size: SH
  11. Install the fluid return hose at the pump inlet connector.
  12. Fill the system with new power steering fluid.
  13. Bleed the power steering system. Refer to Power Steering System Bleeding .
  14. Operate the engine for approximately 15 minutes.
  15. Remove the pump return hose at the pump inlet.
  16. Plug the connection on the pump.
  17. While replenishing the fluid in the reservoir, inspect the draining fluid.
  18. Repeat the procedure if foreign material is present in the draining fluid.

  19. Object Number: 247459  Size: SH

    Important: Do not reuse any drained power steering fluid.

  20. Complete the following steps if foreign material is still present in the power steering hoses:
  21. • Replace the hoses.
    • Repair or replace all of the power steering components.