Hummer H2. Manual - part 2066

Fig. 7: CPA & EFS Connectors Located On The Frame Crossmember 
Courtesy of GENERAL MOTORS CORP. 

7. Remove the connector position assurance (CPA) from both electronic frontal sensor (EFS) connectors 

located on the frame crossmember.  

8. Disconnect the EFS connectors.  

Enabling Procedure 

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

Fig. 8: CPA & EFS Connectors Located On The Frame Crossmember 
Courtesy of GENERAL MOTORS CORP. 

1. Connect the EFS connectors to the EFS.  

2. Install the CPA to the EFS connectors. 

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

Fig. 9: SIR Fuse & Underhood Fuse Block 
Courtesy of GENERAL MOTORS CORP. 

3. Install the SIR fuse (1) into the underhood fuse block.  

4. Staying well away from all air bags, turn ON the ignition, with the engine OFF. 

1. The AIR BAG indicator will flash 7 times.  

2. The AIR BAG indicator will then turn OFF.  

5. Perform theDiagnostic System Check - SIR if the AIR BAG indicator does not operate as described.  

SIR DISABLING AND ENABLING ZONE 3 

Disabling Procedure 

1. Turn the steering wheel until the vehicle's wheels are pointing straight ahead.  

IMPORTANT: Refer to SIR Service Precautions before disabling the SIR system.

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

2. Turn OFF the ignition.  

3. Remove the key from the ignition. 

Fig. 10: SIR Fuse & Underhood Fuse Block 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the SIR fuse (1) from the underhood fuse block. 

IMPORTANT: With the SIR fuse removed and the ignition ON, the AIR BAG indicator 

illuminates. This is normal operation and does not indicate an SIR system 
malfunction.

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2