Dome light issues

Hey everyone,

I have a 1992 Lumina Euro with the 3.1. Got home the other day, looked up, and my dome light was on without the door being opened or anything. Yes I made sure the dimmer switch wasn't all the way turned up and in fact pushed it completely down but no difference. Had to pull the fuse so it wouldn't drain my battery. Any ideas on how to fix this? Would it be one of my door switches stuck or gone bad or??? Any input would be appreciated. Thanx!!

Either a switch is not opening, a courtesy circuit wire is grounded, or the illuminate entry module is grounding the lamp circuit. This is also the module which provides entry delay for the dome light.