The Fleece FPE-GM-ALO-37 GM All Lights On Module for your 03-07 GM 2500HD/3500HD will 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.
2003-2007 Classic 2500-3500 Silverado/Sierra - or - if your fuse box is laid out like the one in the gallery above.
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