Theres no plug on it? Its just cut? You could get a test light and see what it for. I heard they use to add a wire incase someone added a truck cap so they could put on a 3rd brake light
1 - 1 of 5 Posts
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!