Look for a small set screw at the base of the handle.
Removing door lock cylinder without key.
You drive the roll pin out and the lever arm comes off of the tumbler.
I didn t get a key with mine either.
In case you lack the original key you have to replace the complete ignition switch assembly instead of just the lock cylinder.
Use the flat head screwdriver to turn the spindle in the center of the door lock cylinder counterclockwise until it stops.
Unscrew this plate and remove the latch from the door if possible.
Then you can pull the lock cylinder tumbler out the other side.
Open the door and look for the latch plate along the door s edge.
How to remove a door lock without a key.
You must be able to do it without the key.
I did the same thing to replace my drivers door handle.
I think there is a roll pin on the back of the tumbler that holds it all together.