Sierra, Silverado 2006-2007

Ignition Switch

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Removal & Installation



  1. Disconnect the negative battery cable.
  2.  
  3. Disable the SIR system. Refer to the Chassis Electrical Section.
  4.  
  5. Remove the hush and knee bolster.
  6.  
  7. Remove the steering column trim covers.
  8.  
  9. With the key installed, turn the key to the RUN position on 2005-06 models and 2007 Classic models. On 2007 models, except Classic, turn the key to the START position.
  10.  
  11. Insert an Allen wrench into the hole on top of the lock cylinder housing. Push down on the Allen wrench to release the tab on the lock cylinder inside the lock cylinder housing.

    Click image to see an enlarged view

    Fig. Insert Allen wrench through hole, push down on tab and slide out the lock cylinder

  12.  
  13. Slide the lock cylinder out of the lock cylinder housing.
  14.  
  15. Disconnect the passlock and key buzzer from the lock cylinder housing.
  16.  
  17. Insert J 42759 into the lock cylinder housing to release the tabs on the ignition switch.

    Click image to see an enlarged view

    Fig. Insert J 42759 into the lock cylinder housing to release the tabs on the ignition switch

  18.  
  19. Pull the ignition switch out of the lock cylinder housing.
  20.  
  21. Disconnect the connector from the ignition switch.
  22.  

To install:


WARNING
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.

  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.
    NOTE
    In order to reach a stop while rotating the lock cylinder housing gear you MUST push and hold in the solenoid on the electric park lock.



    Click image to see an enlarged view

    Fig. Verify the alignment of the gear (1) in the ignition switch (2)



    Click image to see an enlarged view

    Fig. In order to reach a stop while rotating the lock cylinder housing gear you MUST push and hold in the solenoid on the electric park lock

  2.  
  3. Use a screwdriver to rotate the lock cylinder housing gear counterclockwise until it hits a stop.
  4.  
  5. Connect the connector to the ignition switch.
  6.  
  7. Insert the ignition switch into the lock cylinder housing. The tabs on the ignition switch MUST be seated inside the lock cylinder housing for proper installation.
  8.  
  9. Use a screwdriver to rotate the lock cylinder housing gear clockwise to the START position - allowing it to spring return into the RUN position.

    Click image to see an enlarged view

    Fig. Use a screwdriver to rotate the lock cylinder housing gear clockwise to the START position - allowing it to spring return into the RUN position

  10.  
  11. Align the lock cylinder and install the lock cylinder into the lock cylinder housing.
  12.  
  13. Connect the passlock and key buzzer into the lock housing.
  14.  
  15. Install the steering column trim covers.
  16.  
  17. Install the hush and knee bolster.
  18.  
  19. Enable the SIR system.
  20.  
  21. Connect the negative battery cable.
  22.  

 
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