1998 Chevy Camaro no heat

It sounds as if you have one of the two most common problems with that year. One is that it may be a clogged heater core or heater core hose. To check that, I would try flushing out the heater core and see if you get free flowing water. If you do, you probably have the second most common problem. A clogged or bad heater control valve. They are not very expensive. Id say $10-20 or cheaper if you order one online. If you dont have any leaks, the thermostat is good and the proper coolant level is kept, your problem a clog somewhere. So thats where I'd start. You should have heat if the core is free flowing and you replace the heater control valve. Good Luck!!!!!!!