No high beam on chevrolet cavalier?

The switch or the relay, or even the fuse. However you'd probably get a more knowledgeable answer on rec.autos.tech, they're more likely to have seen a North American car

Thanks for your reply.

Will check out the switch, relay and the fuse. If I'm still stumped, I'll try the other group you mentioned.

Cheers

check if the headlamp flash option is working if so suspect the column switch it was a problem on some older Vauxhall Cavaliers caused by the contacts oxidising over time not really a repairable switch as it has a number of small springs which migrate when you open the casing cheap replacement tho Derek

Derek ( snipped-for-privacy@cwcom.net) gurgled happily, sounding much like they were saying :

Do you think it's likely that the same light switch will be shared between an aging Euro heap of crap and a relatively modern 'merkin heap of crap, purely because they happen to share a badge?

Yes. :)

Irrelevant really, it's worth investigation...

As mentioned try the switch or the relay. On some cars the dipped beam goes out when the high beam goes on, so it could be just the high beam relay. Check in the fuse box or up under the dash on the drivers side. The high beam switch is probably on the steering column and controlled by a metal rod from the lever.

Gareth

Do the headlights go out when the ignition is switched off? If so they're likely to be relay operated. So my first shot would be to check that relay and fuse.

As others have said a dirty or burnt out dip switch could have the same effect. It's just a case of patient fault tracing.