I have a 96 Blazer with a 4.3L. It will not start. The dash lights do not come on and the fuel pump does not whine. It will turn over fine, just won't fire.

Well for any one that cares, it was the ignition switch. This makes the 2nd time I have replaced the damn thing. Well at least it is fixed.

I'm sorry that your thread was overlooked, I'm glad to hear that you got it fixed. Thanks for coming back and posting the solution.