I noticed about a week ago when I crank my blazer the ignition felt like it was sticking a little before it clicked back after starting. Today I went to start it and it got stuck in the on position and I couldn't turn it off so I had to unhook the battery. Anyone have any ideas on what's happened? Thanks. Also is it safe to spray a small amount of wd40 in the key slot? Don't figure it will work though. I also stuck a screwdriver inside the hole under the steering column but it never released the ignition.