GM Repair Problems? Ask GM Repair Expert Now.
Hello, my name is***** sounds like the body control module may have failed. Unplug body control module and ground the pink/white wire at pin A4. If this turns on low beams then body control module needs to be replaced. If not pink/white wire between body control module and relay needs to be repaired/replaced. Let me know if you have more questions or if there is anything else I can do to help. Thanks.
There is no fuse that would cause this, here is a wire diagram so you can see how system works. Let me know if you have questions, thanks.-https://www.dropbox.com/s/7xso8zdtg1cc73e/clb1.pdf?dl=0-