Had a similar problem with a 99 Sable.<quoted text>My parents' car just had the same problem Saturday night (5/19/07). They're taking it to the dealer this week. Which fuse did you pull to shut off the lights?
The switch for the interior lights is part of the latching mechanism in the door. Try spraying some WD-40 or silicon lube into the latch mechanism and see if that works. Did for me.