S&T Series Blazer, Bravada, Envoy, Jimmy, Rainier, Trailblazer, Xtreme

Ignition Switch

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Removal & Installation



2000-02 Models
  1. Disconnect the negative battery cable.
  2.  
  3. Disable the airbag system, as outlined in the Chassis Electrical Section.
  4.  
  5. Remove the steering column trim covers from the steering column.
  6.  
  7. Disconnect the steering column electrical connectors.
  8.  
  9. Remove the wire harness assembly (1) from the wire harness straps (2) and the steering column.
  10.  
  11. Slide the 2 connectors (2) of the turn signal and multifunction switch assembly out of the bulkhead connector (1).
  12.  
  13. Remove the key alarm connector (1) from the lock module assembly (2) in the following way:
    1. Rotate the key alarm connector (1) 90 degrees.
    2.  
    3. Pull the key alarm connector (1) out of the lock module assembly (2).
    4.  
    5. Remove the passkey connector from the lock module assembly (2).
    6.  

  14.  
  15. Remove the connector (2) from the electric park lock (1), for vehicle equipped with floor shifters.
  16.  
  17. Slide the ignition and key alarm switch assembly (2) out of the lock module assembly (1) by releasing the tabs.
  18.  

To install:

  1. Slide the ignition and key alarm switch assembly (2) into the lock module assembly (1).
  2.  
  3. Install the key alarm connector (1) into the lock module assembly (2).
    1. Push the key alarm connector (1) into the lock module assembly (2).
    2.  
    3. Rotate the key alarm connector (1) 90 degrees so that the key alarm connector (1) locks into place.
    4.  
    5. Install the passkey connector into the lock module assembly (2).
    6.  

  4.  
  5. Snap the electric park lock (2) onto the lock module assembly (2), for vehicle equipped with floor shifters.
  6.  
  7. Reconnect the connector (2) to the electric park lock (1), for vehicle equipped with floor shifters.
  8.  
  9. Slide the 2 connectors (2) of the turn signal and multifunction switch assembly into the bulkhead connector (1).
  10.  
  11. Attach the wire harness assembly (1) to the steering column with new wire harness straps (2).
  12.  
  13. Connect the steering column electrical connectors.
  14.  
  15. Install the steering column trim covers to the steering column.
  16.  
  17. Enable the airbag system, as outlined in the Chassis Electrical Section.
  18.  
  19. Connect the negative battery cable.
  20.  

2003-05 Models
  1. Disconnect the negative battery cable.
  2.  
  3. Disable the airbag system, as outlined in 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.
  10.  
  11. Install a hex wrench into the hole on top of the lock cylinder housing. Push down on the hex wrench to release the tab on the lock cylinder inside the lock cylinder housing.

    Click image to see an enlarged view

    Fig. Push down on the hex wrench to release the tab on the lock cylinder inside the lock cylinder housing

  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 into the lock cylinder housing

    Click image to see an enlarged view

    Fig. Release the tabs on the ignition switch using ignition switch connector release tool J 42759

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

To install:

  1. Verify the alignment of the gear in the ignition switch. If gear is not in position shown, turn gear in ignition switch until you reach the correct position.
  2.  
  3. Use a screwdriver to rotate the lock cylinder housing gear counterclockwise until it hits a stop. 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.
  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

  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 airbag system, as outlined in the Chassis Electrical Section.
  20.  
  21. Connect the negative battery cable.
  22.  

 
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