Bleeding the Power Steering System

Tools Required 

• J 35555  Mity Vac
• J 43485  Power Steering Bleeder Adapter

Important:  Hoses touching the frame, body, or engine may cause system noise.

1. Verify that the hoses do not touch any other part of the vehicle.
   NOTE: Refer to AIR IN THE POWER STEERING SYSTEM NOTICE .

   Important:  Loose connections may not leak, but could allow air into the steering system.

2. Verify that all hose connections are tight.

   Important:  Maintain the fluid level throughout the bleed procedure.

3. Remove the power steering fluid reservoir cap.
   NOTE: 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.

   Important:  Use new fluid only.

4. Verify the fluid level is correct. Add fluid if necessary. Refer to CHECKING AND ADDING POWER STEERING FLUID  .
5. Attach the J 43485  to the J 35555  or equivalent.
   Fig 1: Identifying Power Steering Bleeder Adapter

   Courtesy of GENERAL MOTORS CORP.
6. Place the J 43485  on or in the reservoir filler neck.
7. Apply a vacuum of 68 kPa (20 in Hg) maximum.
8. Wait 5 minutes.

   Typical vacuum drop is 7-10 kPa (2-3 in Hg). If the vacuum does not remain steady, refer to POWER STEERING FLUID LEAKS  .

9. Remove the J 43485 and the J 35555.
10. Install the reservoir cap.
11. Start the engine. Allow the engine to idle.
12. Turn off the engine.
13. Verify the fluid level is correct. Adjust the fluid level if necessary.

    Important:  Do not turn steering wheel to lock.

14. Start the engine. Allow the engine to idle.
15. Turn the steering wheel 180-360 degrees in both directions 5 times.
16. Switch the ignition off.
17. Remove the reservoir cap.
18. Verify the fluid level is correct. Adjust the fluid level if necessary.
19. Attach the J 43485  to the J 35555  or equivalent.
20. Place the J 43485  on or in the pump reservoir filler neck.
21. Apply a vacuum of 68 kPa (20 in Hg) maximum.
22. Wait 5 minutes.
23. Remove the J 43485  and the J 35555  .
24. Verify the fluid level is correct. Adjust the fluid level if necessary.
25. Install the reservoir cap.
26. Verify the following conditions:
    • Smooth power assist is present.
    • The vehicle operates quietly.
    • The pump maintains the proper fluid level.
    • No leaking occurs in the steering system.
    • The fluid is free of foam or discoloration.