How to replace 2004 cavalier headlight and liscense plate light

Used to, this would be an obvious case of a bad headlight switch. Now with all the extra computers on cars, it more likely is a glitch in the body control module (BCM). This small computer controls many functions including most if not all of the lighting. A tech with a voltmeter could probably find which part is at fault, either the switch or the BCM. If the BCM is replaced, you need to check if it needs programming for the car.

It will fused with the headlights. If all the other lights work, replace the license plate light bulb(s).

i don't think so, you'll probably just have to replace it if the dirt is on the inside

headlight switch is at fault
buy a new one

Before you do anything I would check the Ignition Switch. But there should be codes in memory for the ABS and the Service Eng Soon light.

hi, if your license plate bulb cover has no screw holes in it then the chances are its just pushed in it may be a very tight fit but should just pull out its usually held in by two plastic clips that lock once its pushed in so using a screw driver to lever the light cover off should get it off.

If you have a cover on the inside of the boot that covers the wires going to the number plate bulb you may be able to take this off and then be able to see how it comes off.

Let me know how you get on or if you need further assistance ok

CHECK TAIL LAMP BULBS AND THE GROUND FOR THE TAIL LAMP ASSMBLYS

Hi there, have you tried the radio fuse and lighter fuse as when tail lights and dash lights wont work it is normally one of those.

Take the starter out...if that doesnt work replace your headlight shitch