Hummer H2. Manual - part 1979

2. Remove the evaporator tube nut (2) from the condenser (1).  

3. Remove the evaporator tube (3) from the condenser (1). 

Fig. 29: Evaporator Tube Nut & Evaporator 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the evaporator tube nut (1) from the evaporator.  

5. Remove the evaporator tube (4) from the evaporator.  

6. Remove the evaporator tube (4) from the body retaining clip (3).  

7. Remove the evaporator tube (3) from the vehicle.  

8. Discard all of the used sealing washers.  

9. Cap all of the open connections.  

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Installation Procedure 

1. Install the new sealing washers. Refer to Sealing Washer Replacement .  

2. Install the evaporator tube (4) to the body retaining clip (3).  

3. Install the evaporator tube (4) to the evaporator. 

Fig. 30: Evaporator Tube Nut & Evaporator 
Courtesy of GENERAL MOTORS CORP. 

4. Install the evaporator tube nut (1) to the evaporator. 

Tighten: Tighten the nut to 16 N.m (12 lb ft). 

5. Install the evaporator tube (3) to the condenser (1). 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 31: Evaporator Tube & Condenser 
Courtesy of GENERAL MOTORS CORP. 

6. Install the evaporator tube nut (2) to the condenser (1). 

Tighten: Tighten the nut to 16 N.m (12 lb ft). 

7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging .  

8. Leak test the fittings of the components using the J 39400-A . See Special Tools and Equipment . 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

AIR CONDITIONING (A/C) REFRIGERANT FILTER INSTALLATION

Tools Required 

J 39400-A Halogen Leak Detector. See Special Tools and Equipment . 

Fig. 32: A/C Refrigerant Filter & Evaporator Tube 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.0 L. 

IMPORTANT: The A/C Refrigerant filter, ACDelco P/N 15-1696 must be installed to the A/C 

evaporator tube between the condenser and evaporator. The installation of this 
A/C refrigerant filter eliminates the need for flushing.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2