NEED A LITTLE HELP HERE!!!!! My Daytime Running Lamps Won't Come On. These are brand new bulbs, installed just underneath the main headlights. I looked up the fuses on 31 and 33 underneath the hood. Ohm'd them out. they're good. Tested the ambient ligt sensor in and out of daylight, that's still good, I did find a schematic of the lighting system online which indicates a DRL Relay located in the underhood fuse box however, in my vehicle (2010 Avalanche LT) there is no relay there. If there is a DRL relay, where is it? If not, what should I check next?