i have a 99 chevy blazer lt fully loaded auto lamps foglights & all the problem i have is the drl do not work now the fog lights stopped working when i push the foglight button with the auto lamps on my foglights dont come on and the switch dont light up but the drl come on and turn off the headlights now when i trun the headlights on with the switch and push the foglight button it lets the headlifghts on but also puits the high beams on i tried the headlight switch so far no luck

 

The fog lights will not work unless the headlights are on and set to low beam. They will not work with the high beams on.

 

i know this but they dont work at all no matter what i do with them and my day time running light dont work either

 

Sounds like you may have a problem with the headlamp grounding relay. Check all of the relays in the underhood fuse/relay center.

 

thank you will do