interior light

front bulbs are good, the rear light comes on and goes off like it is suppose too now. I have tried to find other threads on this type problem but nothing is quiet the problem I have. I was wondering if it could possibly be the cab control module?

A control module issue would not operate some lights but not others. How have you verified the front bulbs are good? By manually turning them on? A diagnostic tool with body capability will be able to interface with the module and command lights on and off, etc, to perform good testing. That might be a good next step to take.

i did test the bulbs, and i tested the sockets with a volt meter. no power to the sockets on front interior lights. thank you for all your help