Hummer H2. Manual - part 2076

Fig. 45: Block Tooth Of Steering Shaft Assembly In 12 O'clock Position 
Courtesy of GENERAL MOTORS CORP. 

1. Verify the following: 

z

The wheels on the vehicle are straight ahead. 

coil assembly may damage the unit, causing an inflatable restraint 
malfunction.

NOTE:

The wheels of the vehicle must be straight ahead and the steering column 
in the LOCK position before disconnecting the steering column or 
intermediate shaft from the steering gear. Failure to do so will cause the 
SIR coil assembly to become uncentered, which may cause damage to the 
coil assembly.

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

z

That J 42640 is installed or the ignition switch is in the LOCK position.  

Fig. 46: SIR Coil 
Courtesy of GENERAL MOTORS CORP. 

2. If reusing the existing coil it MUST be centered, refer to Inflatable Restraint Steering Wheel Module 

Coil Centering in Steering Wheel and Column. 

IMPORTANT: Do not remove the centering tab from the new SIR coil until the 

installation is complete. If the SIR coil does not come with a centering tab, 
you must center the SIR coil.

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

Fig. 47: Aligning SIR Coil Assembly With Horn Tower 
Courtesy of GENERAL MOTORS CORP. 

3. Align the SIR coil assembly (1) with the horn tower on the turn signal cancel cam assembly (2).  

4. Slide the SIR coil (4) onto the steering shaft assembly (2).  

5. Firmly seat the retaining ring (3) into the groove on the steering shaft assembly (2). 

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2

  

Fig. 48: Seating The Retaining Ring Into The Groove On The Steering Shaft Assembly 
Courtesy of GENERAL MOTORS CORP. 

6. Remove and discard the centering tab from the new SIR coil (4). 

 

2004 Hummer H2 

2004 RESTRAINTS SIR - Hummer H2