Stuck Key on 1995 Chevrolet G Series Van (G20)

The Key is stuck in the ignition. I have tried everything to get it out...
I have removed the battery cables and attempted to disassemble the column, but cannot find a way to access the ignition assembly. How do I remove the igniton assembly so I can replace it ?

1 answer 1 comment
The time to remove and replace the lock cylinder is about an hour, Here's a repair guide http://bit.ly/LVzbj
After pulling the steering column, I found that the tumbler was toast. It only cost $16 for a new one, but the "1 hour" you mentioned took 4+... :(