Pull the wheel.
I *think* (been a long time since I've done one...it's missing on my truck) that the steering wheel lock is also outboard of the turn signal mechanism.
If the steering wheel lock still works (meaning it's still in there) you'll need a rental tool from one the chain stores. It screws onto the center bolt threads, then has a wingnut or some such to compress the lock plate enough to remove the ring that holds it in place. It's possible to do this without the special tool, but it's a royal PITA.
After that, it's all pretty self-explanatory... it's just one screw to remove the lever... a little more complicated if you have to fish for cruise control wiring.