Originally Posted by
americanretrodave
I don't see how you can say it's not the tumbler, on my '04 I went the route you suggested, it did not fix my problem, it WAS the tumbler. After removing the pin and spring and still not having my key turn, I took the switch to a local locksmith and he reaffirmed the same. My tumbler was allowing the key to go into too far and consequently, it would not turn. Maybe the column lock fixed your problem, but that doesn't make it an all-inclusive fix. If the tumbler is worn out, you can fix the column lock all day and it won't fix the problem.
Dave