Hummer H2. Manual - part 1446

1. Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .  

2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.  

3. Drain the fuel tank. Refer to Fuel Tank Draining Procedure .  

4. Remove the fuel fill pipe from the fuel tank.  

5. Disconnect the chassis fuel pipes at the fuel filter.  

6. Cap the fuel and EVAP pipes in order to prevent possible fuel system contamination. 

Fig. 76: EVAP Vent Pipe 
Courtesy of GENERAL MOTORS CORP. 

7. Disconnect the EVAP vent pipe at the fuel canister. 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 77: Fuel Fill Hose & Hose Clamps 
Courtesy of GENERAL MOTORS CORP. 

8. Loosen the vent hose and filler hose clamp.  

9. Disconnect the vent hose and filler hose from the pipe.  

10. Remove the fuel tank protective shield. 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 78: Fuel Tank Straps & Attaching Bolts 
Courtesy of GENERAL MOTORS CORP. 

11. With the aid of an assistant, support the fuel tank. 

12. Remove the fuel tank strap attaching bolts.  

13. Remove the fuel tank straps.  

14. Carefully lower the rear of the fuel tank slightly. 

NOTE:

Do not bend the fuel tank straps. Bending the fuel tank straps may damage 
the straps.

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 79: Fuel Sender & Fuel Pressure Sensor Electrical Connectors 
Courtesy of GENERAL MOTORS CORP. 

15. Disconnect the fuel sender and the fuel pressure sensor electrical connectors.  

16. Remove the fuel tank.  

17. Place the fuel tank in a suitable work area.  

18. Remove the fuel feed and return pipes from the fuel sender and the retaining clips.  

19. Remove the fuel sender assembly from the fuel tank. Refer to Fuel Sender Assembly Replacement .  

20. Remove the EVAP pipe from the fuel tank roll over valves and the retaining clips.  

Installation Procedure 

1. Connect the EVAP pipe to the fuel tank roll over valves and the retaining clips.  

2. Install the fuel sender assembly to the fuel tank. Refer to Fuel Sender Assembly Replacement .  

3. Connect the fuel feed and return pipes to the fuel sender and the retaining clips. 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2