Cigarette lighter, interior lights not working.

SOURCE: 2003 BUICK REGAL CIGARETTE LIGHTER

you need to get a screwdriver and pull out the main lighter base and underneath that there will be a fuse you need to replace it

SOURCE: Cigarette lighter does not work for my 2006 Buick Rendevous

i had the same problem with my 2003...it was # 32 fuse under the hood labeled front auxillary

SOURCE: cigarette lighter

I had the same problem, and was able to replace the fuse quite easily. I'm not sure which fuse exactly is the correct one, but I DO know the fuse is in the engine not in the interior of the car. You should be able to find exactly which fuse on the internet.

SOURCE: cigarette lighter does not work

This is Fuse 32 under the hood in the fuse box. I had a problem with this fuse as well. I don't smoke so didn't care when I first realized my lighter didn't work, but my check engine light came on and when I took it to get the engine code read, the part they connect to under the dash (ODBII) would not give them a code. I left the store not knowing why my check engine light was on and annoyed there was another problem to fix. After a few hours of troubleshooting with my Dad, we figured out the same fuse that controls the lighters is the same one that powers the OBDII system, and Onstar as well. I hope that info helps someone else.
here's the 2004 owners manual http://www.mediafire.com/?xgh2ucexzld

SOURCE: inline fuse location for cigarette lighter

It is right behind the cigarette lighter itself.