I have the same problem on my 97 Blazer. I just bought it and was thinking of giving someone a deal on it. After reading the forum I am as I write this on my way to purchase a new ignition switch becausemy blazer it doing the very same exact thing mentioned at the beginning of the forum. I had dire thoughts about this thing too; bombing came to mind. Also I was wondering if the ignition harness should be replaced during the switch replacement?
derblazer