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