Hi guy's.I have a 2000 Chevy Blazer.My DRL lights work fine,but at night my lowbeams will not work.I have slammed the hood and they have came on before or I have opened my driver door and they have came on.Ive tried turning the headlight switch on manually still nothing.When I bought the truck they worked.Then one night when driving home they went off and then came back on and went off again.I have changed the relay the on/off switch and checked the fuses.They are all fine.My running lights work but my headlights wont come on.Please help????????????????????

 

It sounds like you have a loose wire. Trace the wires from the head lights and see if you can find any frayed wires, loose connections or damaged wire.

 

Yeah, definitely check your wiring.

 

DRLs are your high beams. check if your high beams work. if they do it sounds like a wire went loose somewhere on your low beams