Hummer H2. Manual - part 1993

Fig. 80: Identifying Heater Hose To Heater Core Outlet 
Courtesy of GENERAL MOTORS CORP. 

8. Install the surge tank outlet hose to the heater core outlet pipe.  

9. Pull the surge tank outlet hose to ensure the connection.  

10. Install the heater inlet hose to the heater core. 

11. Pull the inlet heater inlet hose to ensure the connection.  

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

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

  

BLOWER MOTOR REPLACEMENT 

Removal Procedure 

Fig. 81: Blower Motor Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the sound insulator panel. Refer to Insulator Replacement - Instrument Panel (I/P) in 

Instrument Panel, Gauges, and Console.  

2. Disconnect the electrical connector (2) from the blower motor (1).  

3. Remove the screws from the blower motor (1).  

4. Remove the blower motor (1) from the HVAC module (3).  

5. Remove the retainer from the blower motor impeller. 

Discard the retainer. 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

6. Remove the blower motor impeller from the blower motor (1).  

Installation Procedure 

1. Install the blower motor impeller to the blower motor (1).  

2. Install the new retainer to the blower motor impeller.  

3. Install the blower motor (1) to the HVAC module (3). 

4. Install the screws to the blower motor (1). 

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

Fig. 82: Blower Motor Assembly 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Courtesy of GENERAL MOTORS CORP.

5. Connect the electrical connector (2) to the blower motor (1).  

6. Install the sound insulator panel. Refer to Insulator Replacement - Instrument Panel (I/P) in 

Instrument Panel, Gauges, and Console.  

BLOWER MOTOR IMPELLER REPLACEMENT 

Removal Procedure 

Fig. 83: Blower Motor Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the sound insulator panel. Refer to Insulator Replacement - Instrument Panel (I/P) in 

Instrument Panel, Gauges, and Console.  

2. Disconnect the electrical connector (2) from the blower motor (1). 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2