How do you remove ignition cylinder 88 GMC vandura 2500?

To remove the ignition cylinder from an '88 GMC Vandura 2500, first disconnect the battery to prevent any electrical issues. Then, remove the steering column cover by unscrewing it, and locate the ignition switch. Insert the ignition key and turn it to the "Run" position; there should be a small pin or release tab on the ignition cylinder that you can press to release the cylinder. Finally, pull the ignition cylinder out while ensuring the key is in the correct position.