How do i unlock chevy cavalier without keys?

If You do not have the keys to Your Chevy Cavalier and You need to unlock it I recommend calling a locksmith to do the project. They can get into Your car without damaging any components. There are ways that You can use slim jims or try to pick the door lock but all of them can result in damage to Your vehicle. A locksmith usually will also have the ability to cut You a new key so that You can lock and unlock Your car and start it. Another option is to try to go get the key fob if You have a spare one somewhere else so that the alarm does not go off and then You can get into the car easier.