All Lights On® (2003-2007 Select GM Models)

Brighten up your driving experience with this simple upgrade inside your fuse box. 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.   Fitment Guide: 2003 - 2007 GM Classic Full Size Truck platforms including: Silverado 1500/2500/3500 Sierra 1500/2500/3500 2003 - 2006 GM Classic Full Size SUV platforms including: Avalanche Suburban Tahoe OR if your fuse box is laid out as shown in the installation instructions below:   Installation: 1. Remove the relays labeled: FOG LP, HDLP-LOW, DRL, HDLP-HI 2. Lay the GM All Lights On circuit board in the location shown below 3. Reinstall the four relays back into their original location