Hummer H2. Manual - part 1391

Fig. 21: Heater Hose & Mounting Clip 
Courtesy of GENERAL MOTORS CORP. 

8. Install the heater hose (3) to the mounting clip (2). 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 22: Identifying Heater Hose To Heater Core Outlet 
Courtesy of GENERAL MOTORS CORP. 

9. Connect the surge tank outlet hose to the heater core outlet pipe.  

10. Pull the surge tank outlet hose to ensure the connection.  

11. Install the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement 

in Engine Controls - 4.8L, 5.3L and 6.0L.  

12. Fill the cooling system. Refer to Draining and Filling Cooling System .  

RADIATOR HOSE REPLACEMENT - INLET 

Removal Procedure 

IMPORTANT: Firmly push the quick connect onto the heater core pipe until you hear an 

audible click.

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

1. Drain the cooling system. Refer to Draining and Filling Cooling System .  

2. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct 

Replacement in Engine Controls - 4.8L, 5.3L and 6.0L. 

Fig. 23: Radiator Hose & Engine (Inlet) 
Courtesy of GENERAL MOTORS CORP. 

3. Reposition the radiator inlet hose clamp (3) from the engine (1).  

4. Remove the radiator inlet hose (2) from the engine (1).  

5. Remove the radiator inlet hose (4) from the mounting clip (3). 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 24: Radiator Hose & Radiator (Inlet) 
Courtesy of GENERAL MOTORS CORP. 

6. Reposition the radiator inlet hose clamp (5) from the radiator (6).  

7. Remove the radiator inlet hose (4) from the radiator (6).  

8. Remove the inlet hose from the vehicle.  

Installation Procedure 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2