GM Service Manual Online
For 1990-2009 cars only

Notice: When adding fluid or making a complete fluid change, always use the proper power steering fluid. Failure to use the proper fluid will cause hose and seal damage and fluid leaks.


    Object Number: 454268  Size: SH
  1. Raise and support the front of the vehicle off the ground until the front wheels are free to turn. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Siphon the power steering fluid from the power steering pump reservoir.
  3. Disconnect the power steering return hose from the power steering pump. Refer to Power Steering Return Hose Replacement .
  4. Plug the power steering return hose port on the power steering pump .
  5. Position the power steering return hose toward a large container to catch the draining power steering fluid.
  6. Start and run the engine at an idle while an assistant fills the power steering pump reservoir with power steering fluid. Refer to Checking and Adding Power Steering Fluid .
  7. Turn the steering wheel from stop to stop.
  8. Notice: Do not hold the steering wheel against the stops while flushing the power steering system. Holding the steering wheel against the wheel stops will cause high system pressure, overheating, and damage to the power steering pump and/or gear.

  9. Continue draining to clear all the old power steering fluid from the power steering system.
  10. Flush the power steering system with approximately 0.94 liters (1 quart) of NEW power steering fluid.
  11. Inspect the draining power steering fluid until clear.
  12. Remove the plug from the power steering pump.
  13. Important: Do not reuse any drained power steering fluid.

  14. Connect the power steering return hose to the power steering pump. Refer to Power Steering Return Hose Replacement .
  15. Turn the engine off.
  16. Fill the power steering system. Refer to Refilling the Power Steering System
  17. Inspect the power steering system for leaks. Refer to Power Steering Gear and Pump Leaks .
  18. Bleed the power steering system. Refer to Power Steering System Bleeding .