05 burb headlights turn on by themselves

I have a 2005 Suburban that the headlights turn on by themselves and the only way to get them off is to pull the fuses. After pulling the fuses, the headlights still come on automatically like they are supposed to (with the fuses out). I have had it to the dealer 3 times for this issue....they have replaced the relay switch and multi-function switch. It is doing it again..........any suggestions other than performing an exorcism??? :banghead:

****Update**** it was in the repair shop for 2 more days......just got it back. It was supposedly my fuse box under the hood that was bad. Since this is the 4th time they have had it for this, I'm not gonna believe it until I see it............but...........hopefully!!!

u mean they dont turn off at all? how long did you wait, are u sure its not just the headlight delay?