interior lights

First, go through the book and see if some option in one of the menus was set for this, it may be a security feature or something. If all your settings are as they should be, Go to the Chevy house in Marshall, in the service department, ask to speak with Roger . If there is a quick answer, he knows it (just don't tell him someone is sending him personal questioners from the net please), otherwise, turn it in and let them fix it, especially if it is still under warranty.