Does the car have fog lights? I have a 2003 Sunfire that the high beams would not work on. This was caused by a short in the fog light wiring. I had the fog lights rewired separate from the harness (about $100) and the problem was fixed.
The problem is probably in the dimmer switch but it needs to be checked out.
Normally caused by faulty dimmer switch.
Seperate circuits I believe.
low beams my have burned out
the problem is the switches themselves, just poorly designed.
Bad dimmer switch.
Bad bulbs?Bad Hi-low switch?
Check your owners manual.
fuse, bulbs or switch
Headlights have two filaments; one for low beams and one for high beams. There is a good chance that the low beams are burnt out. This doesn't necessarily mean that the high beams won't work. However, it's not too common for both low beams to burn out at the same time. Of course, it could be a fluke. I would replace the headlights with new ones and then go from there.
Bad bulbs Bad dimmer switch
Hmmm.... it seems unlikely that both low beam elements would fail at the same time, but it's possible. Replacing the headlight lamps is cheap and easy and would be my first attempt at fixing the problem. Is your DRL indicator on the dash flashing? They'll do that when the lamp(s) burn out. Since the DRL's AND the low beams don't work, I wouldn't suspect the headlight switch, however this is not beyond the realm of reason.
I would suspect the dimmer switch. But could be a bad wire/short.
Replace the fan blower resister
you can as long as it is withing certain years 1996-1999 cavalier engine will work in a 96-99 sunfire and a 99-02 cav engine will fit a 99-02 sunfire
It may The Sunfire takes a GM39 tank The Cavalier takes a GM39B You will have to get the wrecker to check or compare the two very carefully.
First check the bulbs, if the bulbs are good I would suspect the high/low beam switch is bad.
Not uncommon in that model; apparently the wiring harness is weak at the low-beam wire; read more in the forum below. gminsidenews.com/forums/f53/1997-pontiac-sunfire-headlights-40665/
Because there are two different bulbs for the hi-beams and lo-beams
Your high beams work but your low beams do not because the switch is broken that switches between high and low beams. Electrical switches wear out.
If low beams do not work and the high beams of a Mitsubishi Eclipse do, it is probably due to a corroded connector. Simply clean the connector and add some petroleum jelly to the terminals.
I would start with the easy answer. Check both of your headlamps to be sure that the low beam filament is still intact. If all is well there, I would start leaning towards the multi-function switch (which is the headlamp / turn signal lever.
check the wiring at the hi-low switch.
As a guess both low beams are burnt out The daytime running and high beams are the same light filament. Or the fuse or the relay for the low beams.