Where you drive your truck doesn't always have street lights. If your going off-road or just driving down dirt roads regular high beams might not show that rock in the road or crossing deer before it's too late. Brighten up your driving experience with this simple upgrade inside your fuse box so your won't get stuck with a costly repair. Simply install the GM All Lights On Module to allow your high-beams, low-beams and fog lamps to simultaneously illuminate the road ahead. Once installed, the GM All Lights On Module will turn on the high-beams, low beams and fog lamps when you turn on your high-beams. When the high-beams are NOT turned on your low-beams and fog lights will function normally.