searched, no joy. 01 Blazer 4dr 4WD gauges come on
 

about 15 seconds after shutting off the engine and taking the key out the gauges come on and go to some random reading. It's doing every time. Sometimes I hear faint noise from the door locks. I think it's draining the battery. Replaced the battery tonight, no change.

is this another ignition switch issue? already replaced it once.