Hummer H2. Manual - part 2170

7. Install the wires back into the ignition switch clip, located on the side of the ignition switch. 

Fig. 107: Plastic Mounted Steering Column Bracket 
Courtesy of GENERAL MOTORS CORP. 

8. Install the wire harness strap.  

9. Install the upper and lower trim covers. Refer to Steering Column Trim Covers Replacement .  

10. Enable the SIR system. Refer to SIR Disabling and Enabling Zone 3 in SIR.  

INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL CENTERING 

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 108: Block Tooth Of Steering Shaft Assembly In 12 O'clock Position 
Courtesy of GENERAL MOTORS CORP. 

1. Verify the following before centering the inflatable restraint steering wheel module coil: 

z

The wheels on the vehicle are straight ahead.  

z

The block tooth (1) of the steering shaft assembly is in the 12 o'clock position.  

z

The ignition switch is in the LOCK position. 

NOTE:

The new SIR coil assembly will be centered. Improper alignment of the SIR 
coil assembly may damage the unit, causing an inflatable restraint 
malfunction.

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 109: Front & Rear Of Inflatable Restraint Steering Wheel Module Coil 
Courtesy of GENERAL MOTORS CORP. 

2. If the front (5) of the inflatable restraint steering wheel module coil has a centering window (4), and on 

the back side (2) a spring service lock (1), perform the following steps: 

1. Hold the inflatable restraint steering wheel module coil with the face up.  

2. While depressing the spring service lock, rotate the coil hub clockwise until the coil ribbon stops.  

3. Rotate the coil hub slowly, counterclockwise, until the centering window appears yellow and both 

arrows (3) line up.  

4. Release spring service lock between the locking tab. The inflatable restraint steering wheel module 

coil is now centered.  

5. Align the centered inflatable restraint steering wheel module coil with the horn tower and slide onto 

the steering shaft assembly.  

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 110: Centering SIR Coil (Without Spring Service Lock) 
Courtesy of GENERAL MOTORS CORP. 

3. If the front (4) of the inflatable restraint steering wheel module coil has a centering window (3) and no 

spring service lock on the back side (1), perform the following steps: 

1. Hold the inflatable restraint steering wheel module coil with the face up.  

2. Rotate the coil hub clockwise until the coil ribbon stops.  

3. Rotate the coil hub slowly, counterclockwise until the centering window appears yellow and both 

arrows (2) line up. This is the CENTER position.  

4. While holding the coil hub in the CENTER position, align the inflatable restraint steering wheel 

module coil with the horn tower and slide onto the steering shaft assembly.  

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2