Hummer H2. Manual - part 1983

Fig. 44: A/C Compressor Relay & Convenience Center 
Courtesy of GENERAL MOTORS CORP. 

1. Install the A/C compressor relay (1) to the convenience center (2).  

2. Install the cover to the underhood convenience center (1).  

AIR CONDITIONING (A/C) LOW PRESSURE SWITCH REPLACEMENT 

Removal Procedure 

1. Disconnect the electrical connector from the A/C low pressure switch. 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 45: A/C Low Pressure Switch & Accumulator 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the A/C low pressure switch from the accumulator.  

3. Remove the O-ring and discard.  

Installation Procedure 

1. Install the NEW O-ring seal to the switch. Refer to O-Ring Replacement . 

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

Fig. 46: A/C Low Pressure Switch & Accumulator 
Courtesy of GENERAL MOTORS CORP. 

2. Install the A/C low pressure switch to the accumulator. 

Tighten: Tighten the switch to 6 N.m (53 lb in).

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2

  

3. Connect the electrical connector to the A/C low pressure switch.  

AIR CONDITIONING (A/C) REFRIGERANT PRESSURE SENSOR REPLACEMENT 

Removal Procedure 

Fig. 47: A/C Refrigerant Pressure Sensor & Evaporator Tube 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2004 HVAC Heating, Ventilation and Air Conditioning - Hummer H2