How to Rekey a GM Ignition Lock Cylinder: A Comprehensive Guide

Rekeying a GM ignition lock cylinder is a necessary task for anyone who needs to change the internal pins of their lock. This process ensures that a new key can operate the lock, providing added security and convenience. In this guide, we will walk you through the steps involved in rekeying a GM ignition lock cylinder, from the tools you need to the specific steps to follow.

Tools Needed

New key blanks specific to your GM model Rekeying kit specific for GM locks Flathead and Phillips screwdrivers Pliers A clean workspace

Steps to Rekey a GM Ignition Lock Cylinder

1. Remove the Ignition Lock Cylinder

Disconnect the battery to prevent any electrical issues.

Use a flathead screwdriver to remove any panels or covers surrounding the ignition.

Insert the current key into the ignition and turn it to the ignition off position.

Disconnect the positive terminal from the battery to ensure safety.

2. Disassemble the Lock Cylinder

Remove the ignition lock cylinder from the vehicle.

Use a screwdriver to take apart the lock cylinder carefully. Keep track of how the components are arranged.

Remove the retaining clip or spring that holds the cylinder together.

3. Remove the Old Pins

Take out the old pins from the lock cylinder. These are typically small spring-loaded pins that correspond to the cuts on the old key.

Keep track of the sizes and arrangement of the pins as you remove them.

4. Insert New Pins

Using the rekeying kit, select the new pins that correspond to the cuts on your new key.

Insert the new pins into the lock cylinder in the same order as the old ones, ensuring they sit flush with the cylinder.

5. Reassemble the Lock Cylinder

Once all the new pins are in place, carefully reassemble the lock cylinder. Make sure all parts are aligned correctly.

Replace the retaining clip or spring to secure the cylinder.

6. Reinstall the Ignition Lock Cylinder

Insert the rekeyed ignition lock cylinder back into its housing.

Turn the key to the ignition off position to ensure it locks the cylinder in place.

7. Reconnect the Battery

Reconnect the positive terminal to the battery.

Test the new key in the ignition to ensure it works properly.

Tips

If you're unfamiliar with this process, consider consulting a professional locksmith or a repair manual specific to your GM model. Ensure you have the correct key blanks and rekeying kit compatible with your specific GM vehicle model. This process may vary slightly depending on the model and year of your GM vehicle, so it's always a good idea to refer to a specific service manual for detailed instructions.