Hummer H2. Manual — part 1988
9. Install the surge tank outlet hose to the heater core.
10. Pull the surge tank outlet hose to ensure the connection.
11. Install the inlet heater hose to the heater core.
12. Pull the inlet heater hose to ensure the connection.
13. Fill the engine coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
EVAPORATOR CORE REPLACEMENT
Removal Procedure
1. Remove the HVAC module. Refer to HVAC Module Assembly Replacement .
2. Disconnect the electrical connector from the recirculation actuator.
3. Remove the harness from the evaporator cover.
4. Remove the screws from the recirculation actuator.
5. Remove the recirculation actuator from the HVAC module.
6. Remove the screws from the evaporator cover (1).
IMPORTANT: Firmly push the quick connect onto the heater core pipe until you hear an
audible click.
IMPORTANT: Firmly push the quick connect onto the heater core pipe until you hear an
audible click.
2004 Hummer H2
2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2
Fig. 61: Evaporator Cover & HVAC Module
Courtesy of GENERAL MOTORS CORP.
7. Remove the evaporator cover (1) from the HVAC module (2).
2004 Hummer H2
2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2
Fig. 62: Evaporator Cowl Gasket & Evaporator
Courtesy of GENERAL MOTORS CORP.
8. Remove the evaporator cowl gasket (1) from the evaporator (2).
2004 Hummer H2
2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2
Fig. 63: Evaporator Core & HVAC Module
Courtesy of GENERAL MOTORS CORP.
9. Remove the evaporator core (1) from the HVAC module (2).
Installation Procedure
2004 Hummer H2
2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2
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