2001 Cadillac DeVille no crank problem and the fuel pump keeps running with the key out.

This was posted by cadymikey484 but I could not find the solution to the
problem. I have the same issue. here is what he posted. NEED
SOLUTION, PLEASE HELP
"This is an extreme weird one...2004 Deville operates flawlessly night
before...next morning back seat fuse box clicks only on start and engine
does not crank as partial dash lights stay on with climate displays coming
on and of and engine fuel pump can be heard running...Turn off and
remove the key from the ignition and partial Dash lights and displays stay
illuminated with the fuel pump still running and the only way to turn
everything off is to remove the negative terminal off the battery of which is
a new battery...I swapped IGN1 relay with known working relay from rear
lighting system and no luck...wondering if ignition switch recall has
something to do with this as next is to check grounds and starter however
a bad starter or ground should not allow the dash system stay powered up
after removal of the ignition key and having to pull the battery terminals to
remove power from the car?"