I have a 1997 Cavalier RS.
The whole problem started as one dim worked on the passenger side and the rest of the lights did not work.
Found bad wires in the harness between the lights. Replaced the whole harness and the DRL module.
At that point I now have brights only. No dims and no DRLs.
I replaced the switch. No change.
Fuses are fine.
Where else can I look for the problem? I am at a loss.
What relay are you refering to and where is it located?
I have replaced the relay that is located behind the front bumper. I believe that is the DRL relay.