2004 Chevy Cavalier power locks

A lot of aftermarket supply stores carry kits that can be installed for this reason. Prices vary. But it's a little involved as far as the installation goes, since you have to add relays, solenoids, actuators etc.

I have looked at meny kits and none of them say they will work for my kind of car locks and I dont want to waist my money and buy a kit and it be wrong.

Not sure where your located, but I know that there is a few speciality shops around here that will do it. Try looking into them. Like if you were going to get an "auto start" installed. "Bestbuy" prehaps.