Ignition Lock Cylinder Replacement

Ignition Lock Cylinder Replacement

Removal Procedure






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. Refer to Battery Negative Cable Disconnection and Connection, Service and Repair

Caution: Refer to SIR Caution, Technician Safety Information

2. Disable the SIR system. Refer to SIR Disabling and Enabling, Service and Repair
3. Remove the steering column trim covers. Refer to Steering Column Trim Cover Replacement, Service and Repair
4. Turn the ignition lock cylinder to the start position.
5. Insert the tip of an awl into the access hole (1) of the ignition lock cylinder.
6. Push down and hold the retaining pin of the ignition lock cylinder.
7. Release the ignition lock cylinder to the run position.






8. Remove the ignition lock cylinder by pulling the cylinder away from the steering column.

Installation Procedure






1. Install the ignition lock cylinder by performing the following procedure:
1.1. Align the positioning locking tab slot on the lock module to the positioning tab on the ignition lock cylinder.
1.2. Push the lock cylinder in until the tab locks in the lock module.
2. Install the steering column trim covers. Refer to Steering Column Trim Cover Replacement, Service and Repair
3. Enable the SIR system. Refer to SIR Disabling and Enabling, Service and Repair
4. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection, Service and Repair
5. Perform the Passlock learn procedure. Refer to Programming Theft Deterrent System Components, Programming and Relearning