My low beams do not work at all. on 2006 Pontiac Grand Prix

I've replaced the bulbs & replaced fuses. Still does not work. I have to run my high beams on the entire time. What should I do?

Thanks

2 answers
Get circuit diagram and test switch and power to switch/control. Test grounds.
i don't know if this will be your problem, but my 2002 chevy impala started out with my low beam not working then the high beams stopped working, my problem was the dimmer switch which is also your turn signal switch. auto zone sells them for $300. but i found a brand new one on e-bay for under $30.00 with a six month warranty. hope this helps you