Ignition Lock Cylinder Replacement - On Vehicle

Removal Procedure

Caution:This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

• / Air bag deployment
• / Personal injury
• / Unnecessary SIR system repairs

In order to avoid the above conditions, observe the following guidelines:

• / Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.
• / If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.
  1. Disable the SIR system. Remove the SIR fuse in the rear fuse panel. (Underneath the rear seat)

Caution:Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

For Vehicles equipped with OnStar® (UE1) with Back Up Battery: The Back Up Battery is a redundant power supply to allow limited OnStar® functionality in the event of a main vehicle battery power disruption to the VCIM (OnStar®module). Do not disconnect the main vehicle battery or remove the OnStar® fuse with the ignition key in any position other than OFF. Retained accessory power (RAP) should be allowed to time out or be disabled (simply opening the driver door should disable RAP) before disconnecting power. Disconnecting power to the OnStar® module in any way while the ignition is On or with RAP activated may cause activation of the OnStar® Back-Up Battery (BUB) system and will discharge and permanently damage the back-up battery. Once the Back-Up Battery is activated it will stay on until it has completely discharged. The BUB is not rechargeable and once activated the BUB must be replaced.

  1. Disconnect the battery negative cable.
  2. Position the steering wheel half way between the upper and lower tilt stops, if necessary.
  3. Remove the "air bag" from the steering wheel.


Important:Seat the air bag removal tool all the way to perform properly.

 Push the handle back towards the IP, releasing the 2spring-loaded fasteners.

 Turn the steering wheel and repeat the same steps for the other 2openings.

 Pull the driver inflator module gently away from the steering wheel.

  1. Remove the steering wheel.
  2. Remove the tilt lever.


  1. Grasp the tilt lever.
  2. Pull the tilt lever straight out from steering column.


  1. Remove the lower steering column trim cover retaining screws.
  2. Remove the lower steering column trim cover.


  1. Remove the upper steering column trim cover retaining screws(3).


  1. Lift the upper steering column trim cover to gain access to the lock cylinder access hole.
  2. Using a bent tip awl, insert the tip into the ignition lock cylinder access hole.


  1. Turn the ignition lock cylinder to the START position.
  2. Using the bent tip awl, push down on the ignition lock cylinder retaining pin.
  3. Release the ignition lock cylinder to the RUN position.


  1. Remove the ignition lock cylinder from the lock module assembly by pulling the ignition lock cylinder away from the steering column.

Ignition and Key Alarm Switch Assembly

  1. Remove the upper and lower trim covers.


  1. Disconnect the coded key controller connector.
  2. Disconnect the fused jumper assembly connector.


  1. Slide the 2connectors(2) of the turn signal and multifunction switch assembly out of the bulk head connector(1).


  1. Slide the coded key controller(2) from the electronic lock module assembly(1).


  1. Remove the key alarm connector(1) from the electronic lock module assembly(4).
  2. Remove the 2tapping screws(3) from the ignition and key alarm switch assembly(2).