In the Dark

Ok, i have one for you guys. Im realizing my interior lights have a mind of their own. What i mean is sometimes upon entering the truck they illuminate, and other times they dont. Currently(past 2weeks i believe) they leave me in the dark when i open the doors. What could be the cause of this? Is there a switch somewhere i should be checking for?

the next time the light fails to come on, open another door to elimate the
drivers door latch asembly, then get back to me.

I opened all the doors and still no lights.

ok, the latch in not the sorce of the problem.
the cargo area light will not come on too?
the body control module controls the operation of the interor lights.
this is a very expensive module/computer. some diagnosis is required
because i dont want you to get this replaced needlessly, with out testing the lighting circuirt first.
next step this will require a test light or multi-meter and some probing of wires
do you think you can do this? a dvom multi-meter is better in this case
and are cheep at radio shack or a place like that.

Hey Raid13, i found out the light problem(at least for the time being), changed my battery today and wha-laa.... "And then there was light"!