[HotZ28]

The device that controls the courtesy lights and retained accessory power (RAP) is the body control module (BCM). RAP, it is part of battery protection and will cut off all power to accessories within 10 minutes after the driver exits the car, or when the lock is pressed on the remote. If you will notice, after you turn off the ignition switch and sit in the car (do not open door) that all accessory power remains on for 5-10 minutes. During this time, you can listen to the radio, open & close windows, move seats and numerous other things, and then all of a sudden, the power goes off. (The timer expired)! If yours is not working like this, I would suspect the BCM or RAP module. The module should be clipped to the bottom of the fuse block passanger side. It’s black, and about 2" X 3", with 6-8 wires plugged into one of the narrow sides. It’s a pain to see, but easy to get out. You might also try changing the relays with one for another purpose. They are all the same in that panel.