I have a 2001 chevrolet cavalier and the high beam lights do not work but the low beam lights work just fine. we just changed the bulbs out yesterday and the high beams still dont work but the low beams do. we checked all of the fuses and they are all fine. how do i fix the high beam lights?

Sounds like its a problem with the light switch handle. Had it myself as well...
If you're savvy enough around car electronics take out the light switch handle, take it apart, find the problem and fix it. Inside the handle-switch you have several slide-switches and some double action slide switches.
Otherwise - get a different switch from a local junkyard or get a new one from your dealer.
Good luck.

Hello

The problem is a leaking battery
Acid leaked all over the wires that are under the battery cage, and ate the wires that run the lights and other systems.

splice up the wires one by one and connect them with an extension wire so it goes around the battery cage not under, ( 2 batteries had leaked)

Good luck
nothing is wrong with any relays or light bulbs

You need a dimmer switch