Hummer H2. Manual - part 2114

9. Remove the J 43485 and the J 35555 . See Special Tools and Equipment .  

10. Reinstall the pump reservoir cap.  

11. Start the engine. Allow the engine to idle.  

12. Turn off the engine.  

13. Verify the fluid level. Repeat steps 11-13 until the fluid stabilizes. 

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. Verify the fluid level. 

IMPORTANT: Do not turn steering wheel to lock.

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Fig. 6: Removing Pump Reservoir Cap
Courtesy of GENERAL MOTORS CORP. 

18. Remove the pump reservoir cap. 

Fig. 7: Bleeding Power Steering System 
Courtesy of GENERAL MOTORS CORP. 

19. Attach the J 43485 to the J 35555 or equivalent. See Special Tools and Equipment .  

20. Place the J 43485 on or in the pump reservoir filler neck. See Special Tools and Equipment .  

21. Apply a vacuum of 68 kPa (20 in Hg) maximum.  

22. Wait 5 minutes.  

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

23. Remove the J 43485 and the J 35555 . See Special Tools and Equipment .  

24. Verify the fluid level. 

Fig. 8: Installing Pump Reservoir Cap 
Courtesy of GENERAL MOTORS CORP. 

25. Reinstall the pump reservoir cap.  

Tools Required 

z

J 35555 Metal Mity Vac. See Special Tools and Equipment .  

z

J 43485 Power Steering Bleed Adapter. See Special Tools and Equipment .  

Excessive Vacuum Drop Diagnosis 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2

  

Fig. 9: Installing Plugs Into The Pressure And Return Port 
Courtesy of GENERAL MOTORS CORP. 

1. If the vacuum continues to drop, remove the pressure and return hose from the pump.  

2. Install the plugs (1, 2) supplied with the J 43485 into the pressure and return port. See Special Tools and 

Equipment . 

 

2004 Hummer H2 

2004 STEERING Power Steering System - Hummer H2