Hummer H2. Manual - part 1952

Fig. 11: HVAC Control Module & I/P Panel 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the center I/P trim bezel. Refer to Trim Panel Replacement - Instrument Panel (I/P) Center 

in Instrument Panel, Gauges and Console.  

2. Remove the screws from the HVAC control module (2).  

3. Depress the HVAC control module tabs (3) and remove the HVAC control module (2) from the I/P (4).  

4. Reposition the HVAC control module (2) from the I/P panel (1).  

5. Disconnect the electrical connectors from the HVAC control module (2).  

Installation Procedure 

IMPORTANT: The Key should be in the off position when connecting the electrical 

connectors to ensure proper calibration.

 

2004 Hummer H2 

2004 HVAC HVAC Systems - Automatic - Hummer H2

  

Fig. 12: HVAC Control Module & I/P Panel 
Courtesy of GENERAL MOTORS CORP. 

1. Connect the electrical connectors to the HVAC control module (2). 

2. Install the HVAC control module (2) to the I/P (1). 

3. Install the screws to the HVAC control module (2). 

Tighten: Tighten the screws to 1.9 N.m (17 lb in). 

4. Install the center I/P trim bezel. Refer to Trim Panel Replacement - Instrument Panel (I/P) Center in 

Instrument Panel, Gauges and Console. 

IMPORTANT: Ensure that the HVAC control module tabs lock into place.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC HVAC Systems - Automatic - Hummer H2

  

5. Start the vehicle and let run for one minute.  

BLOWER MOTOR CONTROL PROCESSOR REPLACEMENT 

Removal Procedure 

Fig. 13: Blower Motor Control Processor & HVAC Module Assembly 
Courtesy of GENERAL MOTORS CORP. 

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

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

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC 

control module is calibrating. 
If interrupted improper HVAC performance will result.

 

2004 Hummer H2 

2004 HVAC HVAC Systems - Automatic - Hummer H2

  

3. Disconnect the electrical connector (4) from the blower motor control processor (3).  

4. Remove the screws from the blower motor control processor (3).  

5. Remove the blower motor control processor (3) from the HVAC module assembly.  

Installation Procedure 

Fig. 14: Blower Motor Control Processor & HVAC Module Assembly 
Courtesy of GENERAL MOTORS CORP. 

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

2. Install the screws to the blower motor control processor (3). 

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC HVAC Systems - Automatic - Hummer H2