Interior lights don't work when doors open

Try adjusting the latch mechanism.

Only one bad door switch should do that

The 20 min time out is the GEM or Body Module,
which is normal only because you have a bad switch,
otherwise it goes to sleep when either front door opens

Put radio on & open a door,the radio should go off
& kill the time delay if no issues exist

a faulty wire on door check your fuses and replace them for the doors

There two common problems with the driver's door control panel, rain water gets into the module and damages the electrics or the wires in the door boot break or abrade and short out. To check out the control panel itself, take the passenger side panel and hook it up to the drivers side, if everything works, replace the driver's panel.

Door switch operation when drivers door pin switch open position; poor ground circuit control. Try wiggle testing pin switch. Harness is routed from door switch along floor board rocker sill.

I hve the same problem go under the hood for the fuse box you will c a fuse that has a blk clip around the whole fuse it self to open it use a small screw driver the ones u use for ur glasses nd open it c if it needs to be changed out if good jst unplug it nd c wat it does on my car I jst unpluged it nd now everything working I think its called a iud some wired name but u can't miss it good luck

If you have tried to adjust your interior lights with your dash light adjuster, and it didn't work, I would say you either have a bulb out, or a blown fuse. Hope it's something simple for you. GOOD LUCK

I have a 2003 Buick lesabre limited my inside lights don't work

Yeah sounds like it. You didn't specify the year, make, or model ! Cadillacs have 3 fuse boxes. One on the drivers fender under the hood, one under the drivers dash, and one in the truck on the drivers side.

Try here - you might be able to download your manual & find out how to reactivate your interior features.
http://www.autozmagz.com/