Cadillac DeVille Will not crank, replace the ignition switch, battery, tried program still Wii not start.

What is your question?

Had blower replace, several months ago,jumped car can hear blower on with control switched off,still will not crank,issue was driving and it cut off,never been able to crank.Replaced battery,no response,replaced switch and key no response, reprogrammed no response,replaced all fuses and relays, nothing.

What makes this problem better or worse?

Nothing

How long has your 2005 Cadillac DeVille had this problem?

A month