Hummer H2. Manual - part 1389

Fig. 13: Surge Tank Components 
Courtesy of GENERAL MOTORS CORP. 

1. Install the surge tank inlet hose (6) to the surge tank (2).  

2. Position the surge tank inlet hose clamp (1) to the surge tank (2). 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Fig. 14: Surge Tank Hose & Radiator (Inlet) 
Courtesy of GENERAL MOTORS CORP. 

3. Install the surge tank inlet hose (1) to the radiator.  

4. Position the surge tank inlet hose clamp to the radiator.  

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

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

SURGE TANK HOSE/PIPE REPLACEMENT - OUTLET

Tools Required 

J 43181 Heater Line Quick Connect Release Tool. See Special Tools and Equipment . 

Removal Procedure 

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

3. Disconnect the heater hose quick connect fitting. 

1. Using the J 43181 disconnect the inlet heater hose from the heater core. See Special Tools and 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2

  

Equipment .  

2. Install the J 43181 to the heater core outlet pipe. See Special Tools and Equipment .  

3. Close the tool around the heater core outlet pipe.  

4. Firmly pull the tool into the quick connect end of the heater hose.  

5. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the 

heater core.  

Fig. 16: Heater Hose & Mounting Clip 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the heater hose (3) from the mounting clip (2). 

 

2004 Hummer H2 

2004 ENGINE Engine Cooling - Hummer H2