Here is an idea on how to replace the ignition barrel ,the photos are simula to yours .
Remove the steering column cover by removing the screws as shown below.
Also the steering knee cover will have to be removed .
Removing the Ignition Switch, use a 10 Torx , remove the ignition switch mounting screw.
Depress the retaining tab in, and pry switch from steering column.
Now with the ignition swith turned to the ON position press bin the tap and slide out the cylinder
Hop this has given you an idea of what has to be done ,and if you have any further question regarding this job then please get back to me .
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