Hummer H2. Manual - part 1989

Fig. 64: Evaporator Core & HVAC Module 
Courtesy of GENERAL MOTORS CORP. 

1. Add the proper amount of PAG oil the evaporator. Refer to Refrigerant System Capacities .  

2. Install the evaporator core (1) to the HVAC module (2). 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 65: Evaporator Cowl Gasket & Evaporator 
Courtesy of GENERAL MOTORS CORP. 

3. Install the evaporator cowl gasket (1) to the evaporator (2). 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 66: Evaporator Cover & HVAC Module 
Courtesy of GENERAL MOTORS CORP. 

4. Install the evaporator cover (1) to the HVAC module (2). 

5. Install the screws to the evaporator cover (1). 

Tighten: Tighten the screws to 2 N.m (18 lb in). 

6. Install the recirculation actuator to the HVAC module.  

7. Install the screws to the recirculation actuator. 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Tighten: Tighten the screws to 2 N.m (18 lb in).

8. Install the harness to the evaporator cover.  

9. Connect the electrical connector to the recirculation actuator (1).  

10. Install the HVAC module. Refer to HVAC Module Assembly Replacement .  

HEATER HOSE REPLACEMENT - INLET 

Tools Required 

J 43181 Quick Connect Connector Removal Tool 

Removal Procedure 

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

Fig. 67: Identifying Heater Hose To Heater Core Outlet

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2