Hummer H2. Manual - part 2151

Fig. 32: Aligning Lock Cylinder Into Lock Cylinder Housing 
Courtesy of GENERAL MOTORS CORP. 

8. Slide the lock cylinder out of the lock cylinder housing.  

9. Disconnect the passlock and key buzzer from the lock cylinder housing. 

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 33: Inserting J 42759 Into Lock Cylinder Housing To Release Tabs On Ignition Switch 
Courtesy of GENERAL MOTORS CORP. 

10. Insert J 42759 into the lock cylinder housing to release the tabs on the ignition switch. See Special Tools 

and Equipment .  

11. Pull the ignition switch out of the lock cylinder housing.  

12. Disconnect the connector from the ignition switch.  

Installation Procedure 

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 34: Aligning Gear In Ignition Switch 
Courtesy of GENERAL MOTORS CORP. 

1. Verify the alignment of the gear (1) in the ignition switch (2). If gear (1) is not in position shown, turn 

gear in ignition switch (2) until you reach the correct position. 

IMPORTANT: The gears between the ignition switch and the lock cylinder housing must 

be in the correct position. Failure to do so will cause a misalignment of 
the gears in the ignition switch and the lock cylinder housing, which may 
result in a NO START or BATTERY DRAIN.

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2

  

Fig. 35: Using Screwdriver To Rotate Lock Cylinder Housing Gear 
Courtesy of GENERAL MOTORS CORP. 

2. Use a screwdriver to rotate the lock cylinder housing gear counterclockwise until it hits a stop.  

3. Connect the connector to the ignition switch. 

 

2004 Hummer H2 

2004 STEERING Steering Wheel and Column - Hummer H2