Low beams headlights won't come on. fuses and bulbs are ok. high beams and parking lights work.
It's the headlamp relay #46. If you want to test it, swap it out with the cooling fan relay #45 and see if your headlights work. If they do you know this is the fix. Found the solution online a couple of years ago and it was spot-on. The part was $45 at autozone at the time.
SOURCE: 2004 envoy xuv low beams dont work switched fuses 45 and 46 still nothing any ideas
Other possibilities are; the bulbs themselves, burnt or corroded bulb sockets, or a bad headlight selector switch.
Well, the problem is that I dont know the reason, you should investigate. There could be issues with lamps (must get new) or electricity problems (must head to auto-service)
SOURCE: 2004 Envoy, low beam headlights turn off on their own.
the daytime running light module is no good.,or the relay is overheating and cutting out and comes back on when cool.get some freeze spray from an electronic supplier and spray the suspect component when it stops working.the -60f will make it appear fast..cheers
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